diff --git a/src/com/android/launcher3/AllAppsList.java b/src/com/android/launcher3/AllAppsList.java
index 89b291f..c25aa40 100644
--- a/src/com/android/launcher3/AllAppsList.java
+++ b/src/com/android/launcher3/AllAppsList.java
@@ -23,6 +23,10 @@
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 
+import com.android.launcher3.compat.LauncherActivityInfoCompat;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+
 import java.util.ArrayList;
 import java.util.List;
 
@@ -66,7 +70,7 @@
         if (mAppFilter != null && !mAppFilter.shouldShowApp(info.componentName)) {
             return;
         }
-        if (findActivity(data, info.componentName)) {
+        if (findActivity(data, info.componentName, info.user)) {
             return;
         }
         data.add(info);
@@ -92,12 +96,14 @@
     /**
      * Add the icons for the supplied apk called packageName.
      */
-    public void addPackage(Context context, String packageName) {
-        final List<ResolveInfo> matches = findActivitiesForPackage(context, packageName);
+    public void addPackage(Context context, String packageName, UserHandleCompat user) {
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
+        final List<LauncherActivityInfoCompat> matches = launcherApps.getActivityList(packageName,
+                user);
 
         if (matches.size() > 0) {
-            for (ResolveInfo info : matches) {
-                add(new AppInfo(context.getPackageManager(), info, mIconCache, null));
+            for (LauncherActivityInfoCompat info : matches) {
+                add(new AppInfo(context, info, user, mIconCache, null));
             }
         }
     }
@@ -105,34 +111,37 @@
     /**
      * Remove the apps for the given apk identified by packageName.
      */
-    public void removePackage(String packageName) {
+    public void removePackage(String packageName, UserHandleCompat user) {
         final List<AppInfo> data = this.data;
         for (int i = data.size() - 1; i >= 0; i--) {
             AppInfo info = data.get(i);
             final ComponentName component = info.intent.getComponent();
-            if (packageName.equals(component.getPackageName())) {
+            if (info.user.equals(user) && packageName.equals(component.getPackageName())) {
                 removed.add(info);
                 data.remove(i);
             }
         }
-        mIconCache.remove(packageName);
+        mIconCache.remove(packageName, user);
     }
 
     /**
      * Add and remove icons for this package which has been updated.
      */
-    public void updatePackage(Context context, String packageName) {
-        final List<ResolveInfo> matches = findActivitiesForPackage(context, packageName);
+    public void updatePackage(Context context, String packageName, UserHandleCompat user) {
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
+        final List<LauncherActivityInfoCompat> matches = launcherApps.getActivityList(packageName,
+                user);
         if (matches.size() > 0) {
             // Find disabled/removed activities and remove them from data and add them
             // to the removed list.
             for (int i = data.size() - 1; i >= 0; i--) {
                 final AppInfo applicationInfo = data.get(i);
                 final ComponentName component = applicationInfo.intent.getComponent();
-                if (packageName.equals(component.getPackageName())) {
+                if (user.equals(applicationInfo.user)
+                        && packageName.equals(component.getPackageName())) {
                     if (!findActivity(matches, component)) {
                         removed.add(applicationInfo);
-                        mIconCache.remove(component);
+                        mIconCache.remove(component, user);
                         data.remove(i);
                     }
                 }
@@ -142,14 +151,14 @@
             // Also updates existing activities with new labels/icons
             int count = matches.size();
             for (int i = 0; i < count; i++) {
-                final ResolveInfo info = matches.get(i);
+                final LauncherActivityInfoCompat info = matches.get(i);
                 AppInfo applicationInfo = findApplicationInfoLocked(
-                        info.activityInfo.applicationInfo.packageName,
-                        info.activityInfo.name);
+                        info.getComponentName().getPackageName(), user,
+                        info.getComponentName().getShortClassName());
                 if (applicationInfo == null) {
-                    add(new AppInfo(context.getPackageManager(), info, mIconCache, null));
+                    add(new AppInfo(context, info, user, mIconCache, null));
                 } else {
-                    mIconCache.remove(applicationInfo.componentName);
+                    mIconCache.remove(applicationInfo.componentName, user);
                     mIconCache.getTitleAndIcon(applicationInfo, info, null);
                     modified.add(applicationInfo);
                 }
@@ -159,37 +168,24 @@
             for (int i = data.size() - 1; i >= 0; i--) {
                 final AppInfo applicationInfo = data.get(i);
                 final ComponentName component = applicationInfo.intent.getComponent();
-                if (packageName.equals(component.getPackageName())) {
+                if (user.equals(applicationInfo.user)
+                        && packageName.equals(component.getPackageName())) {
                     removed.add(applicationInfo);
-                    mIconCache.remove(component);
+                    mIconCache.remove(component, user);
                     data.remove(i);
                 }
             }
         }
     }
 
-    /**
-     * Query the package manager for MAIN/LAUNCHER activities in the supplied package.
-     */
-    static List<ResolveInfo> findActivitiesForPackage(Context context, String packageName) {
-        final PackageManager packageManager = context.getPackageManager();
-
-        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
-        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
-        mainIntent.setPackage(packageName);
-
-        final List<ResolveInfo> apps = packageManager.queryIntentActivities(mainIntent, 0);
-        return apps != null ? apps : new ArrayList<ResolveInfo>();
-    }
 
     /**
      * Returns whether <em>apps</em> contains <em>component</em>.
      */
-    private static boolean findActivity(List<ResolveInfo> apps, ComponentName component) {
-        final String className = component.getClassName();
-        for (ResolveInfo info : apps) {
-            final ActivityInfo activityInfo = info.activityInfo;
-            if (activityInfo.name.equals(className)) {
+    private static boolean findActivity(List<LauncherActivityInfoCompat> apps,
+            ComponentName component) {
+        for (LauncherActivityInfoCompat info : apps) {
+            if (info.getComponentName().equals(component)) {
                 return true;
             }
         }
@@ -197,13 +193,24 @@
     }
 
     /**
+     * Query the launcher apps service for whether the supplied package has
+     * MAIN/LAUNCHER activities in the supplied package.
+     */
+    static boolean packageHasActivities(Context context, String packageName,
+            UserHandleCompat user) {
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
+        return launcherApps.getActivityList(packageName, user).size() > 0;
+    }
+
+    /**
      * Returns whether <em>apps</em> contains <em>component</em>.
      */
-    private static boolean findActivity(ArrayList<AppInfo> apps, ComponentName component) {
+    private static boolean findActivity(ArrayList<AppInfo> apps, ComponentName component,
+            UserHandleCompat user) {
         final int N = apps.size();
-        for (int i=0; i<N; i++) {
+        for (int i = 0; i < N; i++) {
             final AppInfo info = apps.get(i);
-            if (info.componentName.equals(component)) {
+            if (info.user.equals(user) && info.componentName.equals(component)) {
                 return true;
             }
         }
@@ -213,10 +220,11 @@
     /**
      * Find an ApplicationInfo object for the given packageName and className.
      */
-    private AppInfo findApplicationInfoLocked(String packageName, String className) {
+    private AppInfo findApplicationInfoLocked(String packageName, UserHandleCompat user,
+            String className) {
         for (AppInfo info: data) {
             final ComponentName component = info.intent.getComponent();
-            if (packageName.equals(component.getPackageName())
+            if (user.equals(info.user) && packageName.equals(component.getPackageName())
                     && className.equals(component.getClassName())) {
                 return info;
             }
diff --git a/src/com/android/launcher3/AppInfo.java b/src/com/android/launcher3/AppInfo.java
index f85f691..c85626b 100644
--- a/src/com/android/launcher3/AppInfo.java
+++ b/src/com/android/launcher3/AppInfo.java
@@ -17,15 +17,20 @@
 package com.android.launcher3;
 
 import android.content.ComponentName;
+import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageInfo;
-import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.content.pm.ResolveInfo;
 import android.graphics.Bitmap;
 import android.util.Log;
 
+import com.android.launcher3.compat.LauncherActivityInfoCompat;
+import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 
 /**
@@ -71,28 +76,25 @@
     /**
      * Must not hold the Context.
      */
-    public AppInfo(PackageManager pm, ResolveInfo info, IconCache iconCache,
-            HashMap<Object, CharSequence> labelCache) {
-        final String packageName = info.activityInfo.applicationInfo.packageName;
-
-        this.componentName = new ComponentName(packageName, info.activityInfo.name);
+    public AppInfo(Context context, LauncherActivityInfoCompat info, UserHandleCompat user,
+            IconCache iconCache, HashMap<Object, CharSequence> labelCache) {
+        this.componentName = info.getComponentName();
         this.container = ItemInfo.NO_ID;
-        this.setActivity(componentName,
-                Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
 
-        try {
-            PackageInfo pi = pm.getPackageInfo(packageName, 0);
-            flags = initFlags(pi);
-            firstInstallTime = initFirstInstallTime(pi);
-        } catch (NameNotFoundException e) {
-            Log.d(TAG, "PackageManager.getApplicationInfo failed for " + packageName);
-        }
-
+        flags = initFlags(info);
+        firstInstallTime = info.getFirstInstallTime();
         iconCache.getTitleAndIcon(this, info, labelCache);
+        intent = new Intent(Intent.ACTION_MAIN);
+        intent.addCategory(Intent.CATEGORY_LAUNCHER);
+        intent.setComponent(info.getComponentName());
+        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
+        long serialNumber = UserManagerCompat.getInstance(context).getSerialNumberForUser(user);
+        intent.putExtra(EXTRA_PROFILE, serialNumber);
+        this.user = user;
     }
 
-    public static int initFlags(PackageInfo pi) {
-        int appFlags = pi.applicationInfo.flags;
+    private static int initFlags(LauncherActivityInfoCompat info) {
+        int appFlags = info.getApplicationFlags();
         int flags = 0;
         if ((appFlags & android.content.pm.ApplicationInfo.FLAG_SYSTEM) == 0) {
             flags |= DOWNLOADED_FLAG;
@@ -104,10 +106,6 @@
         return flags;
     }
 
-    public static long initFirstInstallTime(PackageInfo pi) {
-        return pi.firstInstallTime;
-    }
-
     public AppInfo(AppInfo info) {
         super(info);
         componentName = info.componentName;
@@ -115,21 +113,7 @@
         intent = new Intent(info.intent);
         flags = info.flags;
         firstInstallTime = info.firstInstallTime;
-    }
-
-    /**
-     * Creates the application intent based on a component name and various launch flags.
-     * Sets {@link #itemType} to {@link LauncherSettings.BaseLauncherColumns#ITEM_TYPE_APPLICATION}.
-     *
-     * @param className the class name of the component representing the intent
-     * @param launchFlags the launch flags
-     */
-    final void setActivity(ComponentName className, int launchFlags) {
-        intent = new Intent(Intent.ACTION_MAIN);
-        intent.addCategory(Intent.CATEGORY_LAUNCHER);
-        intent.setComponent(className);
-        intent.setFlags(launchFlags);
-        itemType = LauncherSettings.BaseLauncherColumns.ITEM_TYPE_APPLICATION;
+        iconBitmap = info.iconBitmap;
     }
 
     @Override
@@ -137,7 +121,8 @@
         return "ApplicationInfo(title=" + title.toString() + " id=" + this.id
                 + " type=" + this.itemType + " container=" + this.container
                 + " screen=" + screenId + " cellX=" + cellX + " cellY=" + cellY
-                + " spanX=" + spanX + " spanY=" + spanY + " dropPos=" + dropPos + ")";
+                + " spanX=" + spanX + " spanY=" + spanY + " dropPos=" + Arrays.toString(dropPos)
+                + " user=" + user + ")";
     }
 
     public static void dumpApplicationInfoList(String tag, String label, ArrayList<AppInfo> list) {
diff --git a/src/com/android/launcher3/AppsCustomizePagedView.java b/src/com/android/launcher3/AppsCustomizePagedView.java
index d6e0bb4..04426a8 100644
--- a/src/com/android/launcher3/AppsCustomizePagedView.java
+++ b/src/com/android/launcher3/AppsCustomizePagedView.java
@@ -808,13 +808,8 @@
                 !(target instanceof DeleteDropTarget) && !(target instanceof Folder))) {
             // Exit spring loaded mode if we have not successfully dropped or have not handled the
             // drop in Workspace
-            mLauncher.getWorkspace().removeExtraEmptyScreen(true, new Runnable() {
-                @Override
-                public void run() {
-                    mLauncher.exitSpringLoadedDragMode();
-                    mLauncher.unlockScreenOrientation(false);
-                }
-            });
+            mLauncher.exitSpringLoadedDragMode();
+            mLauncher.unlockScreenOrientation(false);
         } else {
             mLauncher.unlockScreenOrientation(false);
         }
@@ -1575,7 +1570,8 @@
         int length = list.size();
         for (int i = 0; i < length; ++i) {
             AppInfo info = list.get(i);
-            if (info.intent.getComponent().equals(removeComponent)) {
+            if (info.user.equals(item.user)
+                    && info.intent.getComponent().equals(removeComponent)) {
                 return i;
             }
         }
diff --git a/src/com/android/launcher3/AppsCustomizeTabHost.java b/src/com/android/launcher3/AppsCustomizeTabHost.java
index bb7f045..c6455c2 100644
--- a/src/com/android/launcher3/AppsCustomizeTabHost.java
+++ b/src/com/android/launcher3/AppsCustomizeTabHost.java
@@ -29,6 +29,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.accessibility.AccessibilityManager;
 import android.widget.FrameLayout;
 import android.widget.LinearLayout;
 import android.widget.TabHost;
@@ -430,6 +431,14 @@
             // prevent slowing down the animation)
             mAppsCustomizePane.loadAssociatedPages(mAppsCustomizePane.getCurrentPage());
 
+            // Opening apps, need to announce what page we are on.
+            AccessibilityManager am = (AccessibilityManager)
+                    getContext().getSystemService(Context.ACCESSIBILITY_SERVICE);
+            if (am.isEnabled()) {
+                // Notify the user when the page changes
+                announceForAccessibility(mAppsCustomizePane.getCurrentPageDescription());
+            }
+
             // Going from Workspace -> All Apps
             // NOTE: We should do this at the end since we check visibility state in some of the
             // cling initialization/dismiss code above.
diff --git a/src/com/android/launcher3/BubbleTextView.java b/src/com/android/launcher3/BubbleTextView.java
index c180d32..95300c1 100644
--- a/src/com/android/launcher3/BubbleTextView.java
+++ b/src/com/android/launcher3/BubbleTextView.java
@@ -28,6 +28,7 @@
 import android.util.Log;
 import android.util.TypedValue;
 import android.view.MotionEvent;
+import android.view.ViewConfiguration;
 import android.widget.TextView;
 
 /**
@@ -60,6 +61,8 @@
     private int mPressedOutlineColor;
     private int mPressedGlowColor;
 
+    private float mSlop;
+
     private int mTextColor;
     private boolean mShadowsEnabled = true;
     private boolean mIsTextVisible;
@@ -272,6 +275,11 @@
 
                 mLongPressHelper.cancelLongPress();
                 break;
+            case MotionEvent.ACTION_MOVE:
+                if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) {
+                    mLongPressHelper.cancelLongPress();
+                }
+                break;
         }
         return result;
     }
@@ -356,6 +364,7 @@
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         if (mBackground != null) mBackground.setCallback(this);
+        mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
     }
 
     @Override
diff --git a/src/com/android/launcher3/CellLayout.java b/src/com/android/launcher3/CellLayout.java
index 2436a51..8ca8d91 100644
--- a/src/com/android/launcher3/CellLayout.java
+++ b/src/com/android/launcher3/CellLayout.java
@@ -76,9 +76,6 @@
     private boolean mScrollingTransformsDirty = false;
     private boolean mDropPending = false;
 
-    private final Rect mRect = new Rect();
-    private final CellInfo mCellInfo = new CellInfo();
-
     // These are temporary variables to prevent having to allocate a new object just to
     // return an (x, y) value from helper functions. Do NOT use them to maintain other state.
     private final int[] mTmpXY = new int[2];
@@ -699,103 +696,20 @@
     }
 
     @Override
-    protected void onAttachedToWindow() {
-        super.onAttachedToWindow();
-        if (getParent() instanceof Workspace) {
-            Workspace workspace = (Workspace) getParent();
-            mCellInfo.screenId = workspace.getIdForScreen(this);
-        }
-    }
-
-    public void setTagToCellInfoForPoint(int touchX, int touchY) {
-        final CellInfo cellInfo = mCellInfo;
-        Rect frame = mRect;
-        final int x = touchX + getScrollX();
-        final int y = touchY + getScrollY();
-        final int count = mShortcutsAndWidgets.getChildCount();
-
-        boolean found = false;
-        for (int i = count - 1; i >= 0; i--) {
-            final View child = mShortcutsAndWidgets.getChildAt(i);
-            final LayoutParams lp = (LayoutParams) child.getLayoutParams();
-
-            if ((child.getVisibility() == VISIBLE || child.getAnimation() != null) &&
-                    lp.isLockedToGrid) {
-                child.getHitRect(frame);
-
-                float scale = child.getScaleX();
-                frame = new Rect(child.getLeft(), child.getTop(), child.getRight(),
-                        child.getBottom());
-                // The child hit rect is relative to the CellLayoutChildren parent, so we need to
-                // offset that by this CellLayout's padding to test an (x,y) point that is relative
-                // to this view.
-                frame.offset(getPaddingLeft(), getPaddingTop());
-                frame.inset((int) (frame.width() * (1f - scale) / 2),
-                        (int) (frame.height() * (1f - scale) / 2));
-
-                if (frame.contains(x, y)) {
-                    cellInfo.cell = child;
-                    cellInfo.cellX = lp.cellX;
-                    cellInfo.cellY = lp.cellY;
-                    cellInfo.spanX = lp.cellHSpan;
-                    cellInfo.spanY = lp.cellVSpan;
-                    found = true;
-                    break;
-                }
-            }
-        }
-
-        mLastDownOnOccupiedCell = found;
-
-        if (!found) {
-            final int cellXY[] = mTmpXY;
-            pointToCellExact(x, y, cellXY);
-
-            cellInfo.cell = null;
-            cellInfo.cellX = cellXY[0];
-            cellInfo.cellY = cellXY[1];
-            cellInfo.spanX = 1;
-            cellInfo.spanY = 1;
-        }
-        setTag(cellInfo);
-    }
-
-    @Override
     public boolean onInterceptTouchEvent(MotionEvent ev) {
         // First we clear the tag to ensure that on every touch down we start with a fresh slate,
         // even in the case where we return early. Not clearing here was causing bugs whereby on
         // long-press we'd end up picking up an item from a previous drag operation.
         final int action = ev.getAction();
 
-        if (action == MotionEvent.ACTION_DOWN) {
-            clearTagCellInfo();
-        }
 
         if (mInterceptTouchListener != null && mInterceptTouchListener.onTouch(this, ev)) {
             return true;
         }
 
-        if (action == MotionEvent.ACTION_DOWN) {
-            setTagToCellInfoForPoint((int) ev.getX(), (int) ev.getY());
-        }
-
         return false;
     }
 
-    private void clearTagCellInfo() {
-        final CellInfo cellInfo = mCellInfo;
-        cellInfo.cell = null;
-        cellInfo.cellX = -1;
-        cellInfo.cellY = -1;
-        cellInfo.spanX = 0;
-        cellInfo.spanY = 0;
-        setTag(cellInfo);
-    }
-
-    public CellInfo getTag() {
-        return (CellInfo) super.getTag();
-    }
-
     /**
      * Given a point, return the cell that strictly encloses that point
      * @param x X coordinate of the point
@@ -3360,6 +3274,16 @@
         long screenId;
         long container;
 
+        CellInfo(View v, ItemInfo info) {
+            cell = v;
+            cellX = info.cellX;
+            cellY = info.cellY;
+            spanX = info.spanX;
+            spanY = info.spanY;
+            screenId = info.screenId;
+            container = info.container;
+        }
+
         @Override
         public String toString() {
             return "Cell[view=" + (cell == null ? "null" : cell.getClass())
diff --git a/src/com/android/launcher3/DeleteDropTarget.java b/src/com/android/launcher3/DeleteDropTarget.java
index 75d906b..20546b8 100644
--- a/src/com/android/launcher3/DeleteDropTarget.java
+++ b/src/com/android/launcher3/DeleteDropTarget.java
@@ -38,6 +38,9 @@
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.LinearInterpolator;
 
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+
 import java.util.List;
 import java.util.Set;
 
@@ -184,6 +187,11 @@
         if (!willAcceptDrop(info) || isAllAppsWidget(source, info)) {
             isVisible = false;
         }
+        if (useUninstallLabel &&
+                !(((ItemInfo) info).user.equals(UserHandleCompat.myUserHandle()))) {
+            // Don't support uninstall for apps from other profiles.
+            isVisible = false;
+        }
 
         if (useUninstallLabel) {
             setCompoundDrawablesRelativeWithIntrinsicBounds(mUninstallDrawable, null, null, null);
@@ -279,25 +287,27 @@
         if (isAllAppsApplication(d.dragSource, item)) {
             // Uninstall the application if it is being dragged from AppsCustomize
             AppInfo appInfo = (AppInfo) item;
-            mLauncher.startApplicationUninstallActivity(appInfo.componentName, appInfo.flags);
+            // We don't support uninstalling apps from other profiles.
+            if (item.user.equals(UserHandleCompat.myUserHandle())) {
+                mLauncher.startApplicationUninstallActivity(appInfo.componentName, appInfo.flags);
+            }
         } else if (isUninstallFromWorkspace(d)) {
             ShortcutInfo shortcut = (ShortcutInfo) item;
-            if (shortcut.intent != null && shortcut.intent.getComponent() != null) {
+            // We don't support uninstalling apps from other profiles.
+            if (shortcut.intent != null && shortcut.intent.getComponent() != null &&
+                    shortcut.user.equals(UserHandleCompat.myUserHandle())) {
                 final ComponentName componentName = shortcut.intent.getComponent();
                 final DragSource dragSource = d.dragSource;
-                int flags = AppInfo.initFlags(
-                    ShortcutInfo.getPackageInfo(getContext(), componentName.getPackageName()));
                 mWaitingForUninstall =
-                    mLauncher.startApplicationUninstallActivity(componentName, flags);
+                        mLauncher.startApplicationUninstallActivity(componentName, shortcut.flags);
                 if (mWaitingForUninstall) {
                     final Runnable checkIfUninstallWasSuccess = new Runnable() {
                         @Override
                         public void run() {
                             mWaitingForUninstall = false;
                             String packageName = componentName.getPackageName();
-                            List<ResolveInfo> activities =
-                                    AllAppsList.findActivitiesForPackage(getContext(), packageName);
-                            boolean uninstallSuccessful = activities.size() == 0;
+                            boolean uninstallSuccessful = !AllAppsList.packageHasActivities(
+                                    getContext(), packageName, UserHandleCompat.myUserHandle());
                             if (dragSource instanceof Folder) {
                                 ((Folder) dragSource).
                                     onUninstallActivityReturned(uninstallSuccessful);
diff --git a/src/com/android/launcher3/Folder.java b/src/com/android/launcher3/Folder.java
index fb226e5..e900c2b 100644
--- a/src/com/android/launcher3/Folder.java
+++ b/src/com/android/launcher3/Folder.java
@@ -391,7 +391,7 @@
         // We rearrange the items in case there are any empty gaps
         setupContentForNumItems(count);
 
-        // If our folder has too many items we prune them from the list. This is an issue 
+        // If our folder has too many items we prune them from the list. This is an issue
         // when upgrading from the old Folders implementation which could contain an unlimited
         // number of items.
         for (ShortcutInfo item: overflow) {
@@ -583,7 +583,7 @@
         // by another item.
         if (mContent.getChildAt(item.cellX, item.cellY) != null || item.cellX < 0 || item.cellY < 0
                 || item.cellX >= mContent.getCountX() || item.cellY >= mContent.getCountY()) {
-            // This shouldn't happen, log it. 
+            // This shouldn't happen, log it.
             Log.e(TAG, "Folder order not properly persisted during bind");
             if (!findAndSetEmptyCells(item)) {
                 return null;
@@ -797,12 +797,6 @@
             }
         }
 
-        // This is kind of hacky, but in general, dropping on the workspace handles removing
-        // the extra screen, but dropping elsewhere (back to self, or onto delete) doesn't.
-        if (target != mLauncher.getWorkspace()) {
-            mLauncher.getWorkspace().removeExtraEmptyScreen(true, null);
-        }
-
         mDeleteFolderOnDropCompleted = false;
         mDragInProgress = false;
         mItemAddedBackToSelfViaIcon = false;
@@ -1176,21 +1170,15 @@
     public void onDrop(DragObject d) {
         Runnable cleanUpRunnable = null;
 
-        // If we are coming from All Apps space, we need to remove the extra empty screen (which is
-        // normally done in Workspace#onDropExternal, as well zoom back in and close the folder.
+        // If we are coming from All Apps space, we defer removing the extra empty screen
+        // until the folder closes
         if (d.dragSource != mLauncher.getWorkspace() && !(d.dragSource instanceof Folder)) {
             cleanUpRunnable = new Runnable() {
                 @Override
                 public void run() {
-                    mLauncher.getWorkspace().removeExtraEmptyScreen(false, new Runnable() {
-                        @Override
-                        public void run() {
-                            mLauncher.closeFolder();
-                            mLauncher.exitSpringLoadedDragModeDelayed(true,
-                                    Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT_FOLDER_CLOSE,
-                                    null);
-                        }
-                    }, CLOSE_FOLDER_DELAY_MS, false);
+                    mLauncher.exitSpringLoadedDragModeDelayed(true,
+                            Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT,
+                            null);
                 }
             };
         }
diff --git a/src/com/android/launcher3/FolderIcon.java b/src/com/android/launcher3/FolderIcon.java
index 71a7461..25c4962 100644
--- a/src/com/android/launcher3/FolderIcon.java
+++ b/src/com/android/launcher3/FolderIcon.java
@@ -33,6 +33,7 @@
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.ViewGroup;
 import android.view.animation.AccelerateInterpolator;
 import android.view.animation.DecelerateInterpolator;
@@ -105,6 +106,8 @@
     boolean mAnimating = false;
     private Rect mOldBounds = new Rect();
 
+    private float mSlop;
+
     private PreviewItemDrawingParams mParams = new PreviewItemDrawingParams(0, 0, 0, 0);
     private PreviewItemDrawingParams mAnimParams = new PreviewItemDrawingParams(0, 0, 0, 0);
     private ArrayList<ShortcutInfo> mHiddenItems = new ArrayList<ShortcutInfo>();
@@ -386,7 +389,7 @@
 
     public void performDestroyAnimation(final View finalView, Runnable onCompleteRunnable) {
         Drawable animateDrawable = ((TextView) finalView).getCompoundDrawables()[1];
-        computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(), 
+        computePreviewDrawingParams(animateDrawable.getIntrinsicWidth(),
                 finalView.getMeasuredWidth());
 
         // This will animate the first item from it's position as an icon into its
@@ -703,11 +706,22 @@
             case MotionEvent.ACTION_UP:
                 mLongPressHelper.cancelLongPress();
                 break;
+            case MotionEvent.ACTION_MOVE:
+                if (!Utilities.pointInView(this, event.getX(), event.getY(), mSlop)) {
+                    mLongPressHelper.cancelLongPress();
+                }
+                break;
         }
         return result;
     }
 
     @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
+    }
+
+    @Override
     public void cancelLongPress() {
         super.cancelLongPress();
 
diff --git a/src/com/android/launcher3/FolderInfo.java b/src/com/android/launcher3/FolderInfo.java
index 42e2ec3..85a792f 100644
--- a/src/com/android/launcher3/FolderInfo.java
+++ b/src/com/android/launcher3/FolderInfo.java
@@ -17,8 +17,12 @@
 package com.android.launcher3;
 
 import android.content.ContentValues;
+import android.content.Context;
+
+import com.android.launcher3.compat.UserHandleCompat;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 
 /**
  * Represents a folder containing shortcuts or apps.
@@ -39,6 +43,7 @@
 
     FolderInfo() {
         itemType = LauncherSettings.Favorites.ITEM_TYPE_FOLDER;
+        user = UserHandleCompat.myUserHandle();
     }
 
     /**
@@ -75,8 +80,8 @@
     }
 
     @Override
-    void onAddToDatabase(ContentValues values) {
-        super.onAddToDatabase(values);
+    void onAddToDatabase(Context context, ContentValues values) {
+        super.onAddToDatabase(context, values);
         values.put(LauncherSettings.Favorites.TITLE, title.toString());
     }
 
@@ -114,6 +119,6 @@
         return "FolderInfo(id=" + this.id + " type=" + this.itemType
                 + " container=" + this.container + " screen=" + screenId
                 + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
-                + " spanY=" + spanY + " dropPos=" + dropPos + ")";
+                + " spanY=" + spanY + " dropPos=" + Arrays.toString(dropPos) + ")";
     }
 }
diff --git a/src/com/android/launcher3/IconCache.java b/src/com/android/launcher3/IconCache.java
index ee9f4d4..be02d35 100644
--- a/src/com/android/launcher3/IconCache.java
+++ b/src/com/android/launcher3/IconCache.java
@@ -31,8 +31,14 @@
 import android.graphics.Canvas;
 import android.graphics.Paint;
 import android.graphics.drawable.Drawable;
+import android.os.Build;
 import android.util.Log;
 
+import com.android.launcher3.compat.LauncherActivityInfoCompat;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
+
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileInputStream;
@@ -61,11 +67,35 @@
         public String title;
     }
 
-    private final Bitmap mDefaultIcon;
+    private static class CacheKey {
+        public ComponentName componentName;
+        public UserHandleCompat user;
+
+        CacheKey(ComponentName componentName, UserHandleCompat user) {
+            this.componentName = componentName;
+            this.user = user;
+        }
+
+        @Override
+        public int hashCode() {
+            return componentName.hashCode() + user.hashCode();
+        }
+
+        @Override
+        public boolean equals(Object o) {
+            CacheKey other = (CacheKey) o;
+            return other.componentName.equals(componentName) && other.user.equals(user);
+        }
+    }
+
+    private final HashMap<UserHandleCompat, Bitmap> mDefaultIcons =
+            new HashMap<UserHandleCompat, Bitmap>();
     private final Context mContext;
     private final PackageManager mPackageManager;
-    private final HashMap<ComponentName, CacheEntry> mCache =
-            new HashMap<ComponentName, CacheEntry>(INITIAL_ICON_CACHE_CAPACITY);
+    private final UserManagerCompat mUserManager;
+    private final LauncherAppsCompat mLauncherApps;
+    private final HashMap<CacheKey, CacheEntry> mCache =
+            new HashMap<CacheKey, CacheEntry>(INITIAL_ICON_CACHE_CAPACITY);
     private int mIconDpi;
 
     public IconCache(Context context) {
@@ -74,10 +104,13 @@
 
         mContext = context;
         mPackageManager = context.getPackageManager();
+        mUserManager = UserManagerCompat.getInstance(mContext);
+        mLauncherApps = LauncherAppsCompat.getInstance(mContext);
         mIconDpi = activityManager.getLauncherLargeIconDensity();
 
         // need to set mIconDpi before getting default icon
-        mDefaultIcon = makeDefaultIcon();
+        UserHandleCompat myUser = UserHandleCompat.myUserHandle();
+        mDefaultIcons.put(myUser, makeDefaultIcon(myUser));
     }
 
     public Drawable getFullResDefaultActivityIcon() {
@@ -134,8 +167,9 @@
         return getFullResDefaultActivityIcon();
     }
 
-    private Bitmap makeDefaultIcon() {
-        Drawable d = getFullResDefaultActivityIcon();
+    private Bitmap makeDefaultIcon(UserHandleCompat user) {
+        Drawable unbadged = getFullResDefaultActivityIcon();
+        Drawable d = mUserManager.getBadgedDrawableForUser(unbadged, user);
         Bitmap b = Bitmap.createBitmap(Math.max(d.getIntrinsicWidth(), 1),
                 Math.max(d.getIntrinsicHeight(), 1),
                 Bitmap.Config.ARGB_8888);
@@ -149,24 +183,25 @@
     /**
      * Remove any records for the supplied ComponentName.
      */
-    public void remove(ComponentName componentName) {
+    public void remove(ComponentName componentName, UserHandleCompat user) {
         synchronized (mCache) {
-            mCache.remove(componentName);
+            mCache.remove(new CacheKey(componentName, user));
         }
     }
 
     /**
      * Remove any records for the supplied package name.
      */
-    public void remove(String packageName) {
-        HashSet<ComponentName> forDeletion = new HashSet<ComponentName>();
-        for (ComponentName componentName: mCache.keySet()) {
-            if (componentName.getPackageName().equals(packageName)) {
-                forDeletion.add(componentName);
+    public void remove(String packageName, UserHandleCompat user) {
+        HashSet<CacheKey> forDeletion = new HashSet<CacheKey>();
+        for (CacheKey key: mCache.keySet()) {
+            if (key.componentName.getPackageName().equals(packageName)
+                    && key.user.equals(user)) {
+                forDeletion.add(key);
             }
         }
-        for (ComponentName condemned: forDeletion) {
-            remove(condemned);
+        for (CacheKey condemned: forDeletion) {
+            mCache.remove(condemned);
         }
     }
 
@@ -184,7 +219,7 @@
      */
     public void flushInvalidIcons(DeviceProfile grid) {
         synchronized (mCache) {
-            Iterator<Entry<ComponentName, CacheEntry>> it = mCache.entrySet().iterator();
+            Iterator<Entry<CacheKey, CacheEntry>> it = mCache.entrySet().iterator();
             while (it.hasNext()) {
                 final CacheEntry e = it.next().getValue();
                 if (e.icon.getWidth() < grid.iconSizePx || e.icon.getHeight() < grid.iconSizePx) {
@@ -197,30 +232,34 @@
     /**
      * Fill in "application" with the icon and label for "info."
      */
-    public void getTitleAndIcon(AppInfo application, ResolveInfo info,
+    public void getTitleAndIcon(AppInfo application, LauncherActivityInfoCompat info,
             HashMap<Object, CharSequence> labelCache) {
         synchronized (mCache) {
-            CacheEntry entry = cacheLocked(application.componentName, info, labelCache);
+            CacheEntry entry = cacheLocked(application.componentName, info, labelCache,
+                    info.getUser());
 
             application.title = entry.title;
             application.iconBitmap = entry.icon;
         }
     }
 
-    public Bitmap getIcon(Intent intent) {
-        return getIcon(intent, null);
+    public Bitmap getIcon(Intent intent, UserHandleCompat user) {
+        return getIcon(intent, null, user);
     }
 
-    public Bitmap getIcon(Intent intent, String title) {
+    public Bitmap getIcon(Intent intent, String title, UserHandleCompat user) {
         synchronized (mCache) {
-            final ResolveInfo resolveInfo = mPackageManager.resolveActivity(intent, 0);
+            LauncherActivityInfoCompat launcherActInfo =
+                    mLauncherApps.resolveActivity(intent, user);
             ComponentName component = intent.getComponent();
 
-            if (component == null) {
-                return mDefaultIcon;
+            // null info means not installed, but if we have a component from the intent then
+            // we should still look in the cache for restored app icons.
+            if (launcherActInfo == null && component == null) {
+                return getDefaultIcon(user);
             }
 
-            CacheEntry entry = cacheLocked(component, resolveInfo, null);
+            CacheEntry entry = cacheLocked(component, launcherActInfo, null, user);
             if (title != null) {
                 entry.title = title;
             }
@@ -228,49 +267,54 @@
         }
     }
 
-    public Bitmap getIcon(ComponentName component, ResolveInfo resolveInfo,
+    public Bitmap getDefaultIcon(UserHandleCompat user) {
+        if (!mDefaultIcons.containsKey(user)) {
+            mDefaultIcons.put(user, makeDefaultIcon(user));
+        }
+        return mDefaultIcons.get(user);
+    }
+
+    public Bitmap getIcon(ComponentName component, LauncherActivityInfoCompat info,
             HashMap<Object, CharSequence> labelCache) {
         synchronized (mCache) {
-            if (resolveInfo == null || component == null) {
+            if (info == null || component == null) {
                 return null;
             }
 
-            CacheEntry entry = cacheLocked(component, resolveInfo, labelCache);
+            CacheEntry entry = cacheLocked(component, info, labelCache, info.getUser());
             return entry.icon;
         }
     }
 
-    public boolean isDefaultIcon(Bitmap icon) {
-        return mDefaultIcon == icon;
+    public boolean isDefaultIcon(Bitmap icon, UserHandleCompat user) {
+        return mDefaultIcons.get(user) == icon;
     }
 
-    private CacheEntry cacheLocked(ComponentName componentName, ResolveInfo info,
-            HashMap<Object, CharSequence> labelCache) {
-        CacheEntry entry = mCache.get(componentName);
+    private CacheEntry cacheLocked(ComponentName componentName, LauncherActivityInfoCompat info,
+            HashMap<Object, CharSequence> labelCache, UserHandleCompat user) {
+        CacheKey cacheKey = new CacheKey(componentName, user);
+        CacheEntry entry = mCache.get(cacheKey);
         if (entry == null) {
             entry = new CacheEntry();
 
-            mCache.put(componentName, entry);
+            mCache.put(cacheKey, entry);
 
             if (info != null) {
-                ComponentName key = LauncherModel.getComponentNameFromResolveInfo(info);
-                if (labelCache != null && labelCache.containsKey(key)) {
-                    entry.title = labelCache.get(key).toString();
+                ComponentName labelKey = info.getComponentName();
+                if (labelCache != null && labelCache.containsKey(labelKey)) {
+                    entry.title = labelCache.get(labelKey).toString();
                 } else {
-                    entry.title = info.loadLabel(mPackageManager).toString();
+                    entry.title = info.getLabel().toString();
                     if (labelCache != null) {
-                        labelCache.put(key, entry.title);
+                        labelCache.put(labelKey, entry.title);
                     }
                 }
-                if (entry.title == null) {
-                    entry.title = info.activityInfo.name;
-                }
 
                 entry.icon = Utilities.createIconBitmap(
-                        getFullResIcon(info), mContext);
+                        info.getBadgedIcon(mIconDpi), mContext);
             } else {
                 entry.title = "";
-                Bitmap preloaded = getPreloadedIcon(componentName);
+                Bitmap preloaded = getPreloadedIcon(componentName, user);
                 if (preloaded != null) {
                     if (DEBUG) Log.d(TAG, "using preloaded icon for " +
                             componentName.toShortString());
@@ -278,7 +322,7 @@
                 } else {
                     if (DEBUG) Log.d(TAG, "using default icon for " +
                             componentName.toShortString());
-                    entry.icon = mDefaultIcon;
+                    entry.icon = getDefaultIcon(user);
                 }
             }
         }
@@ -288,9 +332,9 @@
     public HashMap<ComponentName,Bitmap> getAllIcons() {
         synchronized (mCache) {
             HashMap<ComponentName,Bitmap> set = new HashMap<ComponentName,Bitmap>();
-            for (ComponentName cn : mCache.keySet()) {
-                final CacheEntry e = mCache.get(cn);
-                set.put(cn, e.icon);
+            for (CacheKey ck : mCache.keySet()) {
+                final CacheEntry e = mCache.get(ck);
+                set.put(ck.componentName, e.icon);
             }
             return set;
         }
@@ -353,9 +397,14 @@
      * @param componentName the component that should own the icon
      * @returns a bitmap if one is cached, or null.
      */
-    private Bitmap getPreloadedIcon(ComponentName componentName) {
+    private Bitmap getPreloadedIcon(ComponentName componentName, UserHandleCompat user) {
         final String key = componentName.flattenToShortString();
 
+        // We don't keep icons for other profiles in persistent cache.
+        if (!user.equals(UserHandleCompat.myUserHandle())) {
+            return null;
+        }
+
         if (DEBUG) Log.v(TAG, "looking for pre-load icon for " + key);
         Bitmap icon = null;
         FileInputStream resourceFile = null;
@@ -396,7 +445,11 @@
      * @param componentName the component that should own the icon
      * @returns true on success
      */
-    public boolean deletePreloadedIcon(ComponentName componentName) {
+    public boolean deletePreloadedIcon(ComponentName componentName, UserHandleCompat user) {
+        // We don't keep icons for other profiles in persistent cache.
+        if (!user.equals(UserHandleCompat.myUserHandle())) {
+            return false;
+        }
         if (componentName == null) {
             return false;
         }
diff --git a/src/com/android/launcher3/ItemInfo.java b/src/com/android/launcher3/ItemInfo.java
index 3fe4c60..74f16e3 100644
--- a/src/com/android/launcher3/ItemInfo.java
+++ b/src/com/android/launcher3/ItemInfo.java
@@ -17,17 +17,27 @@
 package com.android.launcher3;
 
 import android.content.ContentValues;
+import android.content.Context;
 import android.content.Intent;
 import android.graphics.Bitmap;
 import android.util.Log;
 
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
+import java.util.Arrays;
 
 /**
  * Represents an item in the launcher.
  */
 public class ItemInfo {
+
+    /**
+     * Intent extra to store the profile. Format: UserHandle
+     */
+    static final String EXTRA_PROFILE = "profile";
     
     static final int NO_ID = -1;
     
@@ -102,6 +112,8 @@
      */
     int[] dropPos = null;
 
+    UserHandleCompat user;
+
     ItemInfo() {
     }
 
@@ -114,6 +126,7 @@
         screenId = info.screenId;
         itemType = info.itemType;
         container = info.container;
+        user = info.user;
         // tempdebug:
         LauncherModel.checkItemInfo(this);
     }
@@ -129,9 +142,11 @@
     /**
      * Write the fields of this item to the DB
      * 
+     * @param context A context object to use for getting UserManagerCompat
      * @param values
      */
-    void onAddToDatabase(ContentValues values) { 
+
+    void onAddToDatabase(Context context, ContentValues values) {
         values.put(LauncherSettings.BaseLauncherColumns.ITEM_TYPE, itemType);
         values.put(LauncherSettings.Favorites.CONTAINER, container);
         values.put(LauncherSettings.Favorites.SCREEN, screenId);
@@ -139,6 +154,13 @@
         values.put(LauncherSettings.Favorites.CELLY, cellY);
         values.put(LauncherSettings.Favorites.SPANX, spanX);
         values.put(LauncherSettings.Favorites.SPANY, spanY);
+        long serialNumber = UserManagerCompat.getInstance(context).getSerialNumberForUser(user);
+        values.put(LauncherSettings.Favorites.PROFILE_ID, serialNumber);
+
+        if (screenId == Workspace.EXTRA_EMPTY_SCREEN_ID) {
+            // We should never persist an item on the extra empty screen.
+            throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID");
+        }
     }
 
     void updateValuesWithCoordinates(ContentValues values, int cellX, int cellY) {
@@ -182,6 +204,7 @@
     public String toString() {
         return "Item(id=" + this.id + " type=" + this.itemType + " container=" + this.container
             + " screen=" + screenId + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
-            + " spanY=" + spanY + " dropPos=" + dropPos + ")";
+            + " spanY=" + spanY + " dropPos=" + Arrays.toString(dropPos)
+            + " user=" + user + ")";
     }
 }
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index ff5b1eb..3636107 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -95,6 +95,10 @@
 import android.widget.TextView;
 import android.widget.Toast;
 
+import com.android.launcher3.compat.LauncherActivityInfoCompat;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.DropTarget.DragObject;
 import com.android.launcher3.PagedView.PageSwitchListener;
 
@@ -134,7 +138,6 @@
 
     private static final int REQUEST_CREATE_SHORTCUT = 1;
     private static final int REQUEST_CREATE_APPWIDGET = 5;
-    private static final int REQUEST_PICK_APPLICATION = 6;
     private static final int REQUEST_PICK_SHORTCUT = 7;
     private static final int REQUEST_PICK_APPWIDGET = 9;
     private static final int REQUEST_PICK_WALLPAPER = 10;
@@ -212,7 +215,6 @@
 
     static final int APPWIDGET_HOST_ID = 1024;
     public static final int EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT = 300;
-    public static final int EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT_FOLDER_CLOSE = 400;
     private static final int ON_ACTIVITY_RESULT_ANIMATION_DELAY = 500;
     private static final int ACTIVITY_START_DELAY = 1000;
 
@@ -734,10 +736,6 @@
     private boolean completeAdd(PendingAddArguments args) {
         boolean result = false;
         switch (args.requestCode) {
-            case REQUEST_PICK_APPLICATION:
-                completeAddApplication(args.intent, args.container, args.screenId, args.cellX,
-                        args.cellY);
-                break;
             case REQUEST_PICK_SHORTCUT:
                 processShortcut(args.intent);
                 break;
@@ -763,7 +761,7 @@
     protected void onActivityResult(
             final int requestCode, final int resultCode, final Intent data) {
         // Reset the startActivity waiting flag
-        mWaitingForResult = false;
+        setWaitingForResult(false);
         int pendingAddWidgetId = mPendingAddWidgetId;
         mPendingAddWidgetId = -1;
 
@@ -780,7 +778,7 @@
                     data.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, -1) : -1;
             if (resultCode == RESULT_CANCELED) {
                 completeTwoStageWidgetDrop(RESULT_CANCELED, appWidgetId);
-                mWorkspace.removeExtraEmptyScreen(true, exitSpringLoaded,
+                mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                         ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
             } else if (resultCode == RESULT_OK) {
                 addAppWidgetImpl(appWidgetId, mPendingAddInfo, null,
@@ -834,7 +832,7 @@
                     }
                 };
             }
-            mWorkspace.removeExtraEmptyScreen(true, onComplete, ON_ACTIVITY_RESULT_ANIMATION_DELAY,
+            mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete, ON_ACTIVITY_RESULT_ANIMATION_DELAY,
                     false);
             return;
         }
@@ -857,10 +855,10 @@
             } else {
                 completeAdd(args);
             }
-            mWorkspace.removeExtraEmptyScreen(true, exitSpringLoaded,
+            mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                     ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
         } else if (resultCode == RESULT_CANCELED) {
-            mWorkspace.removeExtraEmptyScreen(true, exitSpringLoaded,
+            mWorkspace.removeExtraEmptyScreenDelayed(true, exitSpringLoaded,
                     ON_ACTIVITY_RESULT_ANIMATION_DELAY, false);
         }
         mDragLayer.clearAnimatedView();
@@ -936,7 +934,7 @@
         mPaused = false;
         sPausedFromUserAction = false;
         if (mRestoring || mOnResumeNeedsLoad) {
-            mWorkspaceLoading = true;
+            setWorkspaceLoading(true);
             mModel.startLoader(true, PagedView.INVALID_RESTORE_PAGE);
             mRestoring = false;
             mOnResumeNeedsLoad = false;
@@ -1190,7 +1188,7 @@
             mPendingAddInfo.spanY = savedState.getInt(RUNTIME_STATE_PENDING_ADD_SPAN_Y);
             mPendingAddWidgetInfo = savedState.getParcelable(RUNTIME_STATE_PENDING_ADD_WIDGET_INFO);
             mPendingAddWidgetId = savedState.getInt(RUNTIME_STATE_PENDING_ADD_WIDGET_ID);
-            mWaitingForResult = true;
+            setWaitingForResult(true);
             mRestoring = true;
         }
 
@@ -1368,38 +1366,6 @@
     }
 
     /**
-     * Add an application shortcut to the workspace.
-     *
-     * @param data The intent describing the application.
-     * @param cellInfo The position on screen where to create the shortcut.
-     */
-    void completeAddApplication(Intent data, long container, long screenId, int cellX, int cellY) {
-        final int[] cellXY = mTmpAddItemCellCoordinates;
-        final CellLayout layout = getCellLayout(container, screenId);
-
-        // First we check if we already know the exact location where we want to add this item.
-        if (cellX >= 0 && cellY >= 0) {
-            cellXY[0] = cellX;
-            cellXY[1] = cellY;
-        } else if (!layout.findCellForSpan(cellXY, 1, 1)) {
-            showOutOfSpaceMessage(isHotseatLayout(layout));
-            return;
-        }
-
-        final ShortcutInfo info = mModel.getShortcutInfo(getPackageManager(), data, this);
-
-        if (info != null) {
-            info.setActivity(this, data.getComponent(), Intent.FLAG_ACTIVITY_NEW_TASK |
-                    Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED);
-            info.container = ItemInfo.NO_ID;
-            mWorkspace.addApplicationShortcut(info, layout, container, screenId, cellXY[0], cellXY[1],
-                    isWorkspaceLocked(), cellX, cellY);
-        } else {
-            Log.e(TAG, "Couldn't find ActivityInfo for selected application: " + data);
-        }
-    }
-
-    /**
      * Add a shortcut to the workspace.
      *
      * @param data The intent describing the shortcut.
@@ -1601,6 +1567,9 @@
                 mModel.startLoader(false, PagedView.INVALID_RESTORE_PAGE,
                         LauncherModel.LOADER_FLAG_CLEAR_WORKSPACE
                                 | LauncherModel.LOADER_FLAG_MIGRATE_SHORTCUTS);
+            } else if (LauncherAppsCompat.ACTION_MANAGED_PROFILE_ADDED.equals(action)
+                    || LauncherAppsCompat.ACTION_MANAGED_PROFILE_REMOVED.equals(action)) {
+                getModel().forceReload();
             }
         }
     };
@@ -1613,6 +1582,9 @@
         final IntentFilter filter = new IntentFilter();
         filter.addAction(Intent.ACTION_SCREEN_OFF);
         filter.addAction(Intent.ACTION_USER_PRESENT);
+        // For handling managed profiles
+        filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_ADDED);
+        filter.addAction(LauncherAppsCompat.ACTION_MANAGED_PROFILE_REMOVED);
         if (ENABLE_DEBUG_INTENTS) {
             filter.addAction(DebugIntents.DELETE_DATABASE);
             filter.addAction(DebugIntents.MIGRATE_DATABASE);
@@ -1796,7 +1768,7 @@
         getWindow().closeAllPanels();
 
         // Whatever we were doing is hereby canceled.
-        mWaitingForResult = false;
+        setWaitingForResult(false);
     }
 
     @Override
@@ -1974,7 +1946,9 @@
 
     @Override
     public void startActivityForResult(Intent intent, int requestCode) {
-        if (requestCode >= 0) mWaitingForResult = true;
+        if (requestCode >= 0) {
+            setWaitingForResult(true);
+        }
         super.startActivityForResult(intent, requestCode);
     }
 
@@ -2088,6 +2062,24 @@
         return mWorkspaceLoading;
     }
 
+    private void setWorkspaceLoading(boolean value) {
+        boolean isLocked = isWorkspaceLocked();
+        mWorkspaceLoading = value;
+        if (isLocked != isWorkspaceLocked()) {
+            onWorkspaceLockedChanged();
+        }
+    }
+
+    private void setWaitingForResult(boolean value) {
+        boolean isLocked = isWorkspaceLocked();
+        mWaitingForResult = value;
+        if (isLocked != isWorkspaceLocked()) {
+            onWorkspaceLockedChanged();
+        }
+    }
+
+    protected void onWorkspaceLockedChanged() { }
+
     private void resetAddInfo() {
         mPendingAddInfo.container = ItemInfo.NO_ID;
         mPendingAddInfo.screenId = -1;
@@ -2126,7 +2118,7 @@
             };
             completeAddAppWidget(appWidgetId, info.container, info.screenId, boundWidget,
                     appWidgetInfo);
-            mWorkspace.removeExtraEmptyScreen(true, onComplete, delay, false);
+            mWorkspace.removeExtraEmptyScreenDelayed(true, onComplete, delay, false);
         }
     }
 
@@ -2220,21 +2212,7 @@
     }
 
     void processShortcut(Intent intent) {
-        // Handle case where user selected "Applications"
-        String applicationName = getResources().getString(R.string.group_applications);
-        String shortcutName = intent.getStringExtra(Intent.EXTRA_SHORTCUT_NAME);
-
-        if (applicationName != null && applicationName.equals(shortcutName)) {
-            Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
-            mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
-
-            Intent pickIntent = new Intent(Intent.ACTION_PICK_ACTIVITY);
-            pickIntent.putExtra(Intent.EXTRA_INTENT, mainIntent);
-            pickIntent.putExtra(Intent.EXTRA_TITLE, getText(R.string.title_select_application));
-            Utilities.startActivityForResultSafely(this, pickIntent, REQUEST_PICK_APPLICATION);
-        } else {
-            Utilities.startActivityForResultSafely(this, intent, REQUEST_CREATE_SHORTCUT);
-        }
+        Utilities.startActivityForResultSafely(this, intent, REQUEST_CREATE_SHORTCUT);
     }
 
     void processWallpaper(Intent intent) {
@@ -2652,19 +2630,33 @@
 
     boolean startActivity(View v, Intent intent, Object tag) {
         intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
-
         try {
             // Only launch using the new animation if the shortcut has not opted out (this is a
             // private contract between launcher and may be ignored in the future).
             boolean useLaunchAnimation = (v != null) &&
                     !intent.hasExtra(INTENT_EXTRA_IGNORE_LAUNCH_ANIMATION);
+            LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
+            UserManagerCompat userManager = UserManagerCompat.getInstance(this);
+
+            UserHandleCompat user = null;
+            if (intent.hasExtra(AppInfo.EXTRA_PROFILE)) {
+                long serialNumber = intent.getLongExtra(AppInfo.EXTRA_PROFILE, -1);
+                user = userManager.getUserForSerialNumber(serialNumber);
+            }
+
+            Bundle optsBundle = null;
             if (useLaunchAnimation) {
                 ActivityOptions opts = ActivityOptions.makeScaleUpAnimation(v, 0, 0,
                         v.getMeasuredWidth(), v.getMeasuredHeight());
+                optsBundle = opts.toBundle();
+            }
 
-                startActivity(intent, opts.toBundle());
+            if (user == null || user.equals(UserHandleCompat.myUserHandle())) {
+                // Could be launching some bookkeeping activity
+                startActivity(intent, optsBundle);
             } else {
-                startActivity(intent);
+                launcherApps.startActivityForProfile(intent.getComponent(),
+                        intent.getSourceBounds(), optsBundle, user);
             }
             return true;
         } catch (SecurityException e) {
@@ -2867,20 +2859,17 @@
             }
         }
 
-        if (!(v instanceof CellLayout)) {
-            v = (View) v.getParent().getParent();
-        }
-
-        resetAddInfo();
-        CellLayout.CellInfo longClickCellInfo = (CellLayout.CellInfo) v.getTag();
-        // This happens when long clicking an item with the dpad/trackball
-        if (longClickCellInfo == null) {
-            return true;
+        CellLayout.CellInfo longClickCellInfo = null;
+        View itemUnderLongClick = null;
+        if (v.getTag() instanceof ItemInfo) {
+            ItemInfo info = (ItemInfo) v.getTag();
+            longClickCellInfo = new CellLayout.CellInfo(v, info);;
+            itemUnderLongClick = longClickCellInfo.cell;
+            resetAddInfo();
         }
 
         // The hotseat touch handling does not go through Workspace, and we always allow long press
         // on hotseat items.
-        final View itemUnderLongClick = longClickCellInfo.cell;
         final boolean inHotseat = isHotseatLayout(v);
         boolean allowLongPress = inHotseat || mWorkspace.allowLongPress();
         if (allowLongPress && !mDragController.isDragging()) {
@@ -3831,7 +3820,7 @@
      * Implementation of the method from LauncherModel.Callbacks.
      */
     public void startBinding() {
-        mWorkspaceLoading = true;
+        setWorkspaceLoading(true);
 
         // If we're starting binding all over again, clear any bind calls we'd postponed in
         // the past (see waitUntilResume) -- we don't need them since we're starting binding
@@ -3931,7 +3920,7 @@
         }
 
         // Remove the extra empty screen
-        mWorkspace.removeExtraEmptyScreen(false, null);
+        mWorkspace.removeExtraEmptyScreen(false, false);
 
         if (!LauncherAppState.isDisableAllApps() &&
                 addedApps != null && mAppsCustomizeContent != null) {
@@ -4148,7 +4137,7 @@
             updateAppMarketIcon();
         }
 
-        mWorkspaceLoading = false;
+        setWorkspaceLoading(false);
         if (upgradePath) {
             mWorkspace.getUniqueComponents(true, null);
             mIntentsOnWorkspaceFromUpgradePath = mWorkspace.getUniqueComponents(true, null);
@@ -4270,10 +4259,10 @@
      * Implementation of the method from LauncherModel.Callbacks.
      */
     public void bindComponentsRemoved(final ArrayList<String> packageNames,
-                                      final ArrayList<AppInfo> appInfos) {
+            final ArrayList<AppInfo> appInfos, final UserHandleCompat user) {
         Runnable r = new Runnable() {
             public void run() {
-                bindComponentsRemoved(packageNames, appInfos);
+                bindComponentsRemoved(packageNames, appInfos, user);
             }
         };
         if (waitUntilResume(r)) {
@@ -4281,10 +4270,10 @@
         }
 
         if (!packageNames.isEmpty()) {
-            mWorkspace.removeItemsByPackageName(packageNames);
+            mWorkspace.removeItemsByPackageName(packageNames, user);
         }
         if (!appInfos.isEmpty()) {
-            mWorkspace.removeItemsByApplicationInfo(appInfos);
+            mWorkspace.removeItemsByApplicationInfo(appInfos, user);
         }
 
         // Notify the drag controller
@@ -4555,16 +4544,27 @@
     }
 
     public ItemInfo createAppDragInfo(Intent appLaunchIntent) {
-        ResolveInfo ri = getPackageManager().resolveActivity(appLaunchIntent, 0);
-        if (ri == null) {
+        // Called from search suggestion, not supported in other profiles.
+        final UserHandleCompat myUser = UserHandleCompat.myUserHandle();
+        LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(this);
+        LauncherActivityInfoCompat activityInfo = launcherApps.resolveActivity(appLaunchIntent,
+                myUser);
+        if (activityInfo == null) {
             return null;
         }
-        return new AppInfo(getPackageManager(), ri, mIconCache, null);
+        return new AppInfo(this, activityInfo, myUser, mIconCache, null);
     }
 
     public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
             Bitmap icon) {
-        return new ShortcutInfo(shortcutIntent, caption, icon);
+        // Called from search suggestion, not supported in other profiles.
+        return createShortcutDragInfo(shortcutIntent, caption, icon,
+                UserHandleCompat.myUserHandle());
+    }
+
+    public ItemInfo createShortcutDragInfo(Intent shortcutIntent, CharSequence caption,
+            Bitmap icon, UserHandleCompat user) {
+        return new ShortcutInfo(shortcutIntent, caption, icon, user);
     }
 
     protected void moveWorkspaceToDefaultScreen() {
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 5ddafea..79bc084 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -24,13 +24,15 @@
 import android.os.Handler;
 import android.util.Log;
 
+import com.android.launcher3.compat.LauncherAppsCompat;
+
 import java.lang.ref.WeakReference;
 
 public class LauncherAppState implements DeviceProfile.DeviceProfileCallbacks {
     private static final String TAG = "LauncherAppState";
     private static final String SHARED_PREFERENCES_KEY = "com.android.launcher3.prefs";
 
-    private static final boolean DEBUG = false;
+    private static final boolean DEBUG = true;  // STOPSHIP(cwren) temporary for debugging
 
     private final AppFilter mAppFilter;
     private final BuildInfo mBuildInfo;
@@ -92,16 +94,11 @@
         mAppFilter = AppFilter.loadByName(sContext.getString(R.string.app_filter_class));
         mBuildInfo = BuildInfo.loadByName(sContext.getString(R.string.build_info_class));
         mModel = new LauncherModel(this, mIconCache, mAppFilter);
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(sContext);
+        launcherApps.addOnAppsChangedListener(mModel);
 
         // Register intent receivers
-        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
-        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
-        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
-        filter.addDataScheme("package");
-        sContext.registerReceiver(mModel, filter);
-        filter = new IntentFilter();
-        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
-        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
+        IntentFilter filter = new IntentFilter();
         filter.addAction(Intent.ACTION_LOCALE_CHANGED);
         filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);
         sContext.registerReceiver(mModel, filter);
@@ -117,7 +114,7 @@
         resolver.registerContentObserver(LauncherSettings.Favorites.CONTENT_URI, true,
                 mFavoritesObserver);
     }
-    
+
     public void recreateWidgetPreviewDb() {
         if (mWidgetPreviewCacheDb != null) {
             mWidgetPreviewCacheDb.close();
@@ -130,6 +127,8 @@
      */
     public void onTerminate() {
         sContext.unregisterReceiver(mModel);
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(sContext);
+        launcherApps.removeOnAppsChangedListener(mModel);
 
         ContentResolver resolver = sContext.getContentResolver();
         resolver.unregisterContentObserver(mFavoritesObserver);
diff --git a/src/com/android/launcher3/LauncherAppWidgetHostView.java b/src/com/android/launcher3/LauncherAppWidgetHostView.java
index 51a649a..f47fd13 100644
--- a/src/com/android/launcher3/LauncherAppWidgetHostView.java
+++ b/src/com/android/launcher3/LauncherAppWidgetHostView.java
@@ -21,6 +21,7 @@
 import android.view.LayoutInflater;
 import android.view.MotionEvent;
 import android.view.View;
+import android.view.ViewConfiguration;
 import android.view.ViewGroup;
 import android.widget.RemoteViews;
 
@@ -36,6 +37,8 @@
     private int mPreviousOrientation;
     private DragLayer mDragLayer;
 
+    private float mSlop;
+
     public LauncherAppWidgetHostView(Context context) {
         super(context);
         mContext = context;
@@ -90,6 +93,11 @@
             case MotionEvent.ACTION_CANCEL:
                 mLongPressHelper.cancelLongPress();
                 break;
+            case MotionEvent.ACTION_MOVE:
+                if (!Utilities.pointInView(this, ev.getX(), ev.getY(), mSlop)) {
+                    mLongPressHelper.cancelLongPress();
+                }
+                break;
         }
 
         // Otherwise continue letting touch events fall through to children
@@ -104,11 +112,22 @@
             case MotionEvent.ACTION_CANCEL:
                 mLongPressHelper.cancelLongPress();
                 break;
+            case MotionEvent.ACTION_MOVE:
+                if (!Utilities.pointInView(this, ev.getX(), ev.getY(), mSlop)) {
+                    mLongPressHelper.cancelLongPress();
+                }
+                break;
         }
         return false;
     }
 
     @Override
+    protected void onAttachedToWindow() {
+        super.onAttachedToWindow();
+        mSlop = ViewConfiguration.get(getContext()).getScaledTouchSlop();
+    }
+
+    @Override
     public void cancelLongPress() {
         super.cancelLongPress();
         mLongPressHelper.cancelLongPress();
diff --git a/src/com/android/launcher3/LauncherAppWidgetInfo.java b/src/com/android/launcher3/LauncherAppWidgetInfo.java
index 950828e..bec1f9e 100644
--- a/src/com/android/launcher3/LauncherAppWidgetInfo.java
+++ b/src/com/android/launcher3/LauncherAppWidgetInfo.java
@@ -19,6 +19,9 @@
 import android.appwidget.AppWidgetHostView;
 import android.content.ComponentName;
 import android.content.ContentValues;
+import android.content.Context;
+
+import com.android.launcher3.compat.UserHandleCompat;
 
 /**
  * Represents a widget (either instantiated or about to be) in the Launcher.
@@ -59,11 +62,13 @@
         // to indicate that they should be calculated based on the layout and minWidth/minHeight
         spanX = -1;
         spanY = -1;
+        // We only support app widgets on current user.
+        user = UserHandleCompat.myUserHandle();
     }
 
     @Override
-    void onAddToDatabase(ContentValues values) {
-        super.onAddToDatabase(values);
+    void onAddToDatabase(Context context, ContentValues values) {
+        super.onAddToDatabase(context, values);
         values.put(LauncherSettings.Favorites.APPWIDGET_ID, appWidgetId);
         values.put(LauncherSettings.Favorites.APPWIDGET_PROVIDER, providerName.flattenToString());
     }
diff --git a/src/com/android/launcher3/LauncherBackupAgentHelper.java b/src/com/android/launcher3/LauncherBackupAgentHelper.java
index de6aedd..7dd8cde 100644
--- a/src/com/android/launcher3/LauncherBackupAgentHelper.java
+++ b/src/com/android/launcher3/LauncherBackupAgentHelper.java
@@ -61,7 +61,7 @@
     @Override
     public void onCreate() {
         boolean restoreEnabled = 0 != Settings.Secure.getInt(
-                getContentResolver(), SETTING_RESTORE_ENABLED, 0);
+                getContentResolver(), SETTING_RESTORE_ENABLED, 1);
         if (VERBOSE) Log.v(TAG, "restore is " + (restoreEnabled ? "enabled" : "disabled"));
 
         addHelper(LauncherBackupHelper.LAUNCHER_PREFS_PREFIX,
diff --git a/src/com/android/launcher3/LauncherBackupHelper.java b/src/com/android/launcher3/LauncherBackupHelper.java
index cab55c7..81ced7b 100644
--- a/src/com/android/launcher3/LauncherBackupHelper.java
+++ b/src/com/android/launcher3/LauncherBackupHelper.java
@@ -28,6 +28,8 @@
 import com.android.launcher3.backup.BackupProtos.Resource;
 import com.android.launcher3.backup.BackupProtos.Screen;
 import com.android.launcher3.backup.BackupProtos.Widget;
+import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.compat.UserHandleCompat;
 
 import android.app.backup.BackupDataInputStream;
 import android.app.backup.BackupDataOutput;
@@ -108,6 +110,7 @@
             Favorites.SPANX,                   // 14
             Favorites.SPANY,                   // 15
             Favorites.TITLE,                   // 16
+            Favorites.PROFILE_ID,              // 17
     };
 
     private static final int ID_INDEX = 0;
@@ -127,6 +130,7 @@
     private static final int SPANX_INDEX = 14;
     private static final int SPANY_INDEX = 15;
     private static final int TITLE_INDEX = 16;
+    private static final int PROFILE_ID_INDEX = 17;
 
     private static final String[] SCREEN_PROJECTION = {
             WorkspaceScreens._ID,              // 0
@@ -295,6 +299,11 @@
         Set<String> savedIds = getSavedIdsByType(Key.FAVORITE, in);
         if (DEBUG) Log.d(TAG, "favorite savedIds.size()=" + savedIds.size());
 
+        // Don't backup apps in other profiles for now.
+        UserHandleCompat myUserHandle = UserHandleCompat.myUserHandle();
+        long userSerialNumber =
+                UserManagerCompat.getInstance(mContext).getSerialNumberForUser(myUserHandle);
+
         // persist things that have changed since the last backup
         ContentResolver cr = mContext.getContentResolver();
         Cursor cursor = cr.query(Favorites.CONTENT_URI, FAVORITE_PROJECTION,
@@ -304,16 +313,22 @@
             cursor.moveToPosition(-1);
             while(cursor.moveToNext()) {
                 final long id = cursor.getLong(ID_INDEX);
-                final long updateTime = cursor.getLong(ID_MODIFIED);
-                Key key = getKey(Key.FAVORITE, id);
-                keys.add(key);
-                final String backupKey = keyToBackupKey(key);
-                currentIds.add(backupKey);
-                if (!savedIds.contains(backupKey) || updateTime >= in.t) {
-                    byte[] blob = packFavorite(cursor);
-                    writeRowToBackup(key, blob, out, data);
+                final long profileId = cursor.getLong(PROFILE_ID_INDEX);
+                if (userSerialNumber == profileId) {
+                    final long updateTime = cursor.getLong(ID_MODIFIED);
+                    Key key = getKey(Key.FAVORITE, id);
+                    keys.add(key);
+                    final String backupKey = keyToBackupKey(key);
+                    currentIds.add(backupKey);
+                    if (!savedIds.contains(backupKey) || updateTime >= in.t) {
+                        byte[] blob = packFavorite(cursor);
+                        writeRowToBackup(key, blob, out, data);
+                    } else {
+                        if (VERBOSE) Log.v(TAG, "favorite " + id + " was too old: " + updateTime);
+                    }
                 } else {
-                    if (VERBOSE) Log.v(TAG, "favorite " + id + " was too old: " + updateTime);
+                    if (VERBOSE) Log.v(TAG, "favorite " + id + " is for other profile: "
+                            + profileId);
                 }
             }
         } finally {
@@ -459,10 +474,15 @@
         Set<String> savedIds = getSavedIdsByType(Key.ICON, in);
         if (DEBUG) Log.d(TAG, "icon savedIds.size()=" + savedIds.size());
 
+        // Don't backup apps in other profiles for now.
+        UserHandleCompat myUserHandle = UserHandleCompat.myUserHandle();
+        long userSerialNumber =
+                UserManagerCompat.getInstance(mContext).getSerialNumberForUser(myUserHandle);
         int startRows = out.rows;
         if (DEBUG) Log.d(TAG, "starting here: " + startRows);
-        String where = Favorites.ITEM_TYPE + "=" + Favorites.ITEM_TYPE_APPLICATION + " OR " +
-                Favorites.ITEM_TYPE + "=" + Favorites.ITEM_TYPE_SHORTCUT;
+        String where = "(" + Favorites.ITEM_TYPE + "=" + Favorites.ITEM_TYPE_APPLICATION + " OR " +
+                Favorites.ITEM_TYPE + "=" + Favorites.ITEM_TYPE_SHORTCUT + ") AND " +
+                Favorites.PROFILE_ID + "=" + userSerialNumber;
         Cursor cursor = cr.query(Favorites.CONTENT_URI, FAVORITE_PROJECTION,
                 where, null, null);
         Set<String> currentIds = new HashSet<String>(cursor.getCount());
@@ -492,9 +512,9 @@
                         if (DEBUG) Log.d(TAG, "I can count this high: " + out.rows);
                         if ((out.rows - startRows) < MAX_ICONS_PER_PASS) {
                             if (VERBOSE) Log.v(TAG, "saving icon " + backupKey);
-                            Bitmap icon = mIconCache.getIcon(intent);
+                            Bitmap icon = mIconCache.getIcon(intent, myUserHandle);
                             keys.add(key);
-                            if (icon != null && !mIconCache.isDefaultIcon(icon)) {
+                            if (icon != null && !mIconCache.isDefaultIcon(icon, myUserHandle)) {
                                 byte[] blob = packIcon(dpi, icon);
                                 writeRowToBackup(key, blob, out, data);
                             }
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index d8645aa..585c238 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -44,6 +44,10 @@
 import android.util.Log;
 import android.util.Pair;
 
+import com.android.launcher3.compat.LauncherActivityInfoCompat;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.InstallWidgetReceiver.WidgetMimeTypeHandlerData;
 
 import java.lang.ref.WeakReference;
@@ -67,14 +71,16 @@
  * LauncherModel object held in a static. Also provide APIs for updating the database state
  * for the Launcher.
  */
-public class LauncherModel extends BroadcastReceiver {
+public class LauncherModel extends BroadcastReceiver
+        implements LauncherAppsCompat.OnAppsChangedListenerCompat {
     static final boolean DEBUG_LOADERS = false;
+    private static final boolean DEBUG_RECEIVER = true;  // STOPSHIP(cwren) temporary for debugging
+
     static final String TAG = "Launcher.Model";
 
     // true = use a "More Apps" folder for non-workspace apps on upgrade
     // false = strew non-workspace apps across the workspace on upgrade
     public static final boolean UPGRADE_USE_MORE_APPS_FOLDER = false;
-
     public static final int LOADER_FLAG_NONE = 0;
     public static final int LOADER_FLAG_CLEAR_WORKSPACE = 1 << 0;
     public static final int LOADER_FLAG_MIGRATE_SHORTCUTS = 1 << 1;
@@ -152,10 +158,12 @@
     // </ only access in worker thread >
 
     private IconCache mIconCache;
-    private Bitmap mDefaultIcon;
 
     protected int mPreviousConfigMcc;
 
+    private final LauncherAppsCompat mLauncherApps;
+    private final UserManagerCompat mUserManager;
+
     public interface Callbacks {
         public boolean setLoadOnResume();
         public int getCurrentWorkspaceScreen();
@@ -175,7 +183,7 @@
         public void bindAppsUpdated(ArrayList<AppInfo> apps);
         public void updatePackageState(String pkgName, int state);
         public void bindComponentsRemoved(ArrayList<String> packageNames,
-                        ArrayList<AppInfo> appInfos);
+                        ArrayList<AppInfo> appInfos, UserHandleCompat user);
         public void bindPackagesUpdated(ArrayList<Object> widgetsAndShortcuts);
         public void bindSearchablesChanged();
         public boolean isAllAppsButtonRank(int rank);
@@ -205,6 +213,8 @@
         final Resources res = context.getResources();
         Configuration config = res.getConfiguration();
         mPreviousConfigMcc = config.mcc;
+        mLauncherApps = LauncherAppsCompat.getInstance(context);
+        mUserManager = UserManagerCompat.getInstance(context);
     }
 
     /** Runs the specified runnable immediately if called from the main thread, otherwise it is
@@ -324,7 +334,7 @@
         Iterator<AppInfo> iter = allAppsApps.iterator();
         while (iter.hasNext()) {
             ItemInfo a = iter.next();
-            if (LauncherModel.appWasRestored(ctx, a.getIntent())) {
+            if (LauncherModel.appWasRestored(ctx, a.getIntent(), a.user)) {
                 restoredAppsFinal.add((AppInfo) a);
             }
         }
@@ -340,7 +350,8 @@
                                 for (AppInfo info : restoredAppsFinal) {
                                     final Intent intent = info.getIntent();
                                     if (intent != null) {
-                                        mIconCache.deletePreloadedIcon(intent.getComponent());
+                                        mIconCache.deletePreloadedIcon(intent.getComponent(),
+                                                info.user);
                                     }
                                 }
                                 callbacks.bindAppsUpdated(restoredAppsFinal);
@@ -392,7 +403,7 @@
                         if (LauncherModel.shortcutExists(context, name, launchIntent)) {
                             // Only InstallShortcutReceiver sends us shortcutInfos, ignore them
                             if (a instanceof AppInfo &&
-                                    LauncherModel.appWasRestored(context, launchIntent)) {
+                                    LauncherModel.appWasRestored(context, launchIntent, a.user)) {
                                 restoredAppsFinal.add((AppInfo) a);
                             }
                             continue;
@@ -482,15 +493,6 @@
         runOnWorkerThread(r);
     }
 
-    public Bitmap getFallbackIcon() {
-        if (mDefaultIcon == null) {
-            final Context context = LauncherAppState.getInstance().getContext();
-            mDefaultIcon = Utilities.createIconBitmap(
-                    mIconCache.getFullResDefaultActivityIcon(), context);
-        }
-        return Bitmap.createBitmap(mDefaultIcon);
-    }
-
     public void unbindItemInfosAndClearQueuedBindRunnables() {
         if (sWorkerThread.getThreadId() == Process.myTid()) {
             throw new RuntimeException("Expected unbindLauncherItemInfos() to be called from the " +
@@ -498,7 +500,9 @@
         }
 
         // Clear any deferred bind runnables
-        mDeferredBindRunnables.clear();
+        synchronized (mDeferredBindRunnables) {
+            mDeferredBindRunnables.clear();
+        }
         // Remove any queued bind runnables
         mHandler.cancelAllRunnablesOfType(MAIN_THREAD_BINDING_RUNNABLE);
         // Unbind all the workspace items
@@ -814,7 +818,7 @@
      */
     static void updateItemInDatabase(Context context, final ItemInfo item) {
         final ContentValues values = new ContentValues();
-        item.onAddToDatabase(values);
+        item.onAddToDatabase(context, values);
         item.updateValuesWithCoordinates(values, item.cellX, item.cellY);
         updateItemInDatabaseHelper(context, values, item, "updateItemInDatabase");
     }
@@ -839,18 +843,24 @@
 
     /**
      * Returns true if the shortcuts already exists in the database.
-     * we identify a shortcut by the component name of the intent.
+     * we identify a shortcut by the component name of the intent
+     * and the user.
      */
-    static boolean appWasRestored(Context context, Intent intent) {
+    static boolean appWasRestored(Context context, Intent intent, UserHandleCompat user) {
         final ContentResolver cr = context.getContentResolver();
         final ComponentName component = intent.getComponent();
         if (component == null) {
             return false;
         }
         String componentName = component.flattenToString();
-        final String where = "intent glob \"*component=" + componentName + "*\" and restored = 1";
+        String shortName = component.flattenToShortString();
+        long serialNumber = UserManagerCompat.getInstance(context)
+                .getSerialNumberForUser(user);
+        final String where = "(intent glob \"*component=" + componentName + "*\" or " +
+                "intent glob \"*component=" + shortName + "*\")" +
+                "and restored = 1 and profileId = " + serialNumber;
         Cursor c = cr.query(LauncherSettings.Favorites.CONTENT_URI,
-                new String[]{"intent", "restored"}, where, null, null);
+                new String[]{"intent", "restored", "profileId"}, where, null, null);
         boolean result = false;
         try {
             result = c.moveToFirst();
@@ -870,8 +880,10 @@
         final ContentResolver cr = context.getContentResolver();
         Cursor c = cr.query(LauncherSettings.Favorites.CONTENT_URI, new String[] {
                 LauncherSettings.Favorites.ITEM_TYPE, LauncherSettings.Favorites.CONTAINER,
-                LauncherSettings.Favorites.SCREEN, LauncherSettings.Favorites.CELLX, LauncherSettings.Favorites.CELLY,
-                LauncherSettings.Favorites.SPANX, LauncherSettings.Favorites.SPANY }, null, null, null);
+                LauncherSettings.Favorites.SCREEN,
+                LauncherSettings.Favorites.CELLX, LauncherSettings.Favorites.CELLY,
+                LauncherSettings.Favorites.SPANX, LauncherSettings.Favorites.SPANY,
+                LauncherSettings.Favorites.PROFILE_ID }, null, null, null);
 
         final int itemTypeIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.ITEM_TYPE);
         final int containerIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CONTAINER);
@@ -880,7 +892,8 @@
         final int cellYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.CELLY);
         final int spanXIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANX);
         final int spanYIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.SPANY);
-
+        final int profileIdIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.PROFILE_ID);
+        UserManagerCompat userManager = UserManagerCompat.getInstance(context);
         try {
             while (c.moveToNext()) {
                 ItemInfo item = new ItemInfo();
@@ -891,8 +904,12 @@
                 item.container = c.getInt(containerIndex);
                 item.itemType = c.getInt(itemTypeIndex);
                 item.screenId = c.getInt(screenIndex);
-
-                items.add(item);
+                long serialNumber = c.getInt(profileIdIndex);
+                item.user = userManager.getUserForSerialNumber(serialNumber);
+                // Skip if user has been deleted.
+                if (item.user != null) {
+                    items.add(item);
+                }
             }
         } catch (Exception e) {
             items.clear();
@@ -965,7 +982,7 @@
 
         final ContentValues values = new ContentValues();
         final ContentResolver cr = context.getContentResolver();
-        item.onAddToDatabase(values);
+        item.onAddToDatabase(context, values);
 
         item.id = LauncherAppState.getLauncherProvider().generateNewItemId();
         values.put(LauncherSettings.Favorites._ID, item.id);
@@ -1155,74 +1172,67 @@
         }
     }
 
+    @Override
+    public void onPackageChanged(UserHandleCompat user, String packageName) {
+        int op = PackageUpdatedTask.OP_UPDATE;
+        enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName },
+                user));
+    }
+
+    @Override
+    public void onPackageRemoved(UserHandleCompat user, String packageName) {
+        int op = PackageUpdatedTask.OP_REMOVE;
+        enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName },
+                user));
+    }
+
+    @Override
+    public void onPackageAdded(UserHandleCompat user, String packageName) {
+        int op = PackageUpdatedTask.OP_ADD;
+        enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName },
+                user));
+    }
+
+    @Override
+    public void onPackagesAvailable(UserHandleCompat user, String[] packageNames,
+            boolean replacing) {
+        if (!replacing) {
+            enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, packageNames,
+                    user));
+            if (mAppsCanBeOnRemoveableStorage) {
+                // Only rebind if we support removable storage. It catches the
+                // case where
+                // apps on the external sd card need to be reloaded
+                startLoaderFromBackground();
+            }
+        } else {
+            // If we are replacing then just update the packages in the list
+            enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_UPDATE,
+                    packageNames, user));
+        }
+    }
+
+    @Override
+    public void onPackagesUnavailable(UserHandleCompat user, String[] packageNames,
+            boolean replacing) {
+        if (!replacing) {
+            enqueuePackageUpdated(new PackageUpdatedTask(
+                    PackageUpdatedTask.OP_UNAVAILABLE, packageNames,
+                    user));
+        }
+
+    }
+
     /**
      * Call from the handler for ACTION_PACKAGE_ADDED, ACTION_PACKAGE_REMOVED and
      * ACTION_PACKAGE_CHANGED.
      */
     @Override
     public void onReceive(Context context, Intent intent) {
-        if (DEBUG_LOADERS) Log.d(TAG, "onReceive intent=" + intent);
+        if (DEBUG_RECEIVER) Log.d(TAG, "onReceive intent=" + intent);
 
         final String action = intent.getAction();
-
-        if (Intent.ACTION_PACKAGE_CHANGED.equals(action)
-                || Intent.ACTION_PACKAGE_REMOVED.equals(action)
-                || Intent.ACTION_PACKAGE_ADDED.equals(action)) {
-            final String packageName = intent.getData().getSchemeSpecificPart();
-            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
-
-            int op = PackageUpdatedTask.OP_NONE;
-
-            if (packageName == null || packageName.length() == 0) {
-                // they sent us a bad intent
-                return;
-            }
-
-            if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
-                op = PackageUpdatedTask.OP_UPDATE;
-            } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
-                if (!replacing) {
-                    op = PackageUpdatedTask.OP_REMOVE;
-                }
-                // else, we are replacing the package, so a PACKAGE_ADDED will be sent
-                // later, we will update the package at this time
-            } else if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
-                if (!replacing) {
-                    op = PackageUpdatedTask.OP_ADD;
-                } else {
-                    op = PackageUpdatedTask.OP_UPDATE;
-                }
-            }
-
-            if (op != PackageUpdatedTask.OP_NONE) {
-                enqueuePackageUpdated(new PackageUpdatedTask(op, new String[] { packageName }));
-            }
-
-        } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) {
-            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
-            String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
-            if (!replacing) {
-                enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_ADD, packages));
-                if (mAppsCanBeOnRemoveableStorage) {
-                    // Only rebind if we support removable storage.  It catches the case where
-                    // apps on the external sd card need to be reloaded
-                    startLoaderFromBackground();
-                }
-            } else {
-                // If we are replacing then just update the packages in the list
-                enqueuePackageUpdated(new PackageUpdatedTask(PackageUpdatedTask.OP_UPDATE,
-                        packages));
-            }
-        } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
-            final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
-            if (!replacing) {
-                String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
-                enqueuePackageUpdated(new PackageUpdatedTask(
-                            PackageUpdatedTask.OP_UNAVAILABLE, packages));
-            }
-            // else, we are replacing the packages, so ignore this event and wait for
-            // EXTERNAL_APPLICATIONS_AVAILABLE to update the packages at that time
-        } else if (Intent.ACTION_LOCALE_CHANGED.equals(action)) {
+        if (Intent.ACTION_LOCALE_CHANGED.equals(action)) {
             // If we have changed locale we need to clear out the labels in all apps/workspace.
             forceReload();
         } else if (Intent.ACTION_CONFIGURATION_CHANGED.equals(action)) {
@@ -1248,7 +1258,7 @@
         }
     }
 
-    private void forceReload() {
+    void forceReload() {
         resetLoadedState(true, true);
 
         // Do this here because if the launcher activity is running it will be restarted.
@@ -1315,7 +1325,9 @@
 
             // Clear any deferred bind-runnables from the synchronized load process
             // We must do this before any loading/binding is scheduled below.
-            mDeferredBindRunnables.clear();
+            synchronized (mDeferredBindRunnables) {
+                mDeferredBindRunnables.clear();
+            }
 
             // Don't bother to start the thread if we know it's not going to do anything
             if (mCallbacks != null && mCallbacks.get() != null) {
@@ -1337,10 +1349,15 @@
     void bindRemainingSynchronousPages() {
         // Post the remaining side pages to be loaded
         if (!mDeferredBindRunnables.isEmpty()) {
-            for (final Runnable r : mDeferredBindRunnables) {
+            Runnable[] deferredBindRunnables = null;
+            synchronized (mDeferredBindRunnables) {
+                deferredBindRunnables = mDeferredBindRunnables.toArray(
+                        new Runnable[mDeferredBindRunnables.size()]);
+                mDeferredBindRunnables.clear();
+            }
+            for (final Runnable r : deferredBindRunnables) {
                 mHandler.post(r, MAIN_THREAD_BINDING_RUNNABLE);
             }
-            mDeferredBindRunnables.clear();
         }
     }
 
@@ -1649,7 +1666,7 @@
             ArrayList<ItemInfo> added = new ArrayList<ItemInfo>();
             synchronized (sBgLock) {
                 for (AppInfo app : mBgAllAppsList.data) {
-                    tmpInfos = getItemInfoForComponentName(app.componentName);
+                    tmpInfos = getItemInfoForComponentName(app.componentName, app.user);
                     if (tmpInfos.isEmpty()) {
                         // We are missing an application icon, so add this to the workspace
                         added.add(app);
@@ -1854,6 +1871,8 @@
                             LauncherSettings.Favorites.SPANY);
                     final int restoredIndex = c.getColumnIndexOrThrow(
                             LauncherSettings.Favorites.RESTORED);
+                    final int profileIdIndex = c.getColumnIndexOrThrow(
+                            LauncherSettings.Favorites.PROFILE_ID);
                     //final int uriIndex = c.getColumnIndexOrThrow(LauncherSettings.Favorites.URI);
                     //final int displayModeIndex = c.getColumnIndexOrThrow(
                     //        LauncherSettings.Favorites.DISPLAY_MODE);
@@ -1864,6 +1883,7 @@
                     int container;
                     long id;
                     Intent intent;
+                    UserHandleCompat user;
 
                     while (!mStopped && c.moveToNext()) {
                         AtomicBoolean deleteOnInvalidPlacement = new AtomicBoolean(false);
@@ -1876,10 +1896,17 @@
                             case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
                                 id = c.getLong(idIndex);
                                 intentDescription = c.getString(intentIndex);
+                                long serialNumber = c.getInt(profileIdIndex);
+                                user = mUserManager.getUserForSerialNumber(serialNumber);
+                                if (user == null) {
+                                    // User has been deleted remove the item.
+                                    itemsToRemove.add(id);
+                                    continue;
+                                }
                                 try {
                                     intent = Intent.parseUri(intentDescription, 0);
                                     ComponentName cn = intent.getComponent();
-                                    if (cn != null && !isValidPackageComponent(manager, cn)) {
+                                    if (cn != null && !isValidPackageActivity(context, cn, user)) {
                                         if (restored) {
                                             // might be installed later
                                             Launcher.addDumpLog(TAG,
@@ -1911,14 +1938,20 @@
                                 }
 
                                 if (restored) {
-                                    Launcher.addDumpLog(TAG,
-                                            "constructing info for partially restored package",
-                                            true);
-                                    info = getRestoredItemInfo(c, titleIndex, intent);
-                                    intent = getRestoredItemIntent(c, context, intent);
+                                    if (user.equals(UserHandleCompat.myUserHandle())) {
+                                        Launcher.addDumpLog(TAG,
+                                                "constructing info for partially restored package",
+                                                true);
+                                        info = getRestoredItemInfo(c, titleIndex, intent);
+                                        intent = getRestoredItemIntent(c, context, intent);
+                                    } else {
+                                        // Don't restore items for other profiles.
+                                        itemsToRemove.add(id);
+                                        continue;
+                                    }
                                 } else if (itemType ==
                                         LauncherSettings.Favorites.ITEM_TYPE_APPLICATION) {
-                                    info = getShortcutInfo(manager, intent, context, c, iconIndex,
+                                    info = getShortcutInfo(manager, intent, user, context, c, iconIndex,
                                             titleIndex, mLabelCache);
                                 } else {
                                     info = getShortcutInfo(c, context, iconTypeIndex,
@@ -1948,6 +1981,7 @@
                                     info.cellY = c.getInt(cellYIndex);
                                     info.spanX = 1;
                                     info.spanY = 1;
+                                    info.intent.putExtra(ItemInfo.EXTRA_PROFILE, serialNumber);
 
                                     // check & update map of what's occupied
                                     deleteOnInvalidPlacement.set(false);
@@ -2367,7 +2401,9 @@
                     }
                 };
                 if (postOnMainThread) {
-                    deferredBindRunnables.add(r);
+                    synchronized (deferredBindRunnables) {
+                        deferredBindRunnables.add(r);
+                    }
                 } else {
                     runOnMainThread(r, MAIN_THREAD_BINDING_RUNNABLE);
                 }
@@ -2384,7 +2420,9 @@
                     }
                 };
                 if (postOnMainThread) {
-                    deferredBindRunnables.add(r);
+                    synchronized (deferredBindRunnables) {
+                        deferredBindRunnables.add(r);
+                    }
                 } else {
                     runOnMainThread(r, MAIN_THREAD_BINDING_RUNNABLE);
                 }
@@ -2506,7 +2544,9 @@
 
             // Load all the remaining pages (if we are loading synchronously, we want to defer this
             // work until after the first render)
-            mDeferredBindRunnables.clear();
+            synchronized (mDeferredBindRunnables) {
+                mDeferredBindRunnables.clear();
+            }
             bindWorkspaceItems(oldCallbacks, otherWorkspaceItems, otherAppWidgets, otherFolders,
                     (isLoadingSynchronously ? mDeferredBindRunnables : null));
 
@@ -2528,7 +2568,9 @@
                 }
             };
             if (isLoadingSynchronously) {
-                mDeferredBindRunnables.add(r);
+                synchronized (mDeferredBindRunnables) {
+                    mDeferredBindRunnables.add(r);
+                }
             } else {
                 runOnMainThread(r, MAIN_THREAD_BINDING_RUNNABLE);
             }
@@ -2594,42 +2636,42 @@
                 return;
             }
 
-            final PackageManager packageManager = mContext.getPackageManager();
             final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
             mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
 
+            final List<UserHandleCompat> profiles = mUserManager.getUserProfiles();
+
             // Clear the list of apps
             mBgAllAppsList.clear();
+            for (UserHandleCompat user : profiles) {
+                // Query for the set of apps
+                final long qiaTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
+                List<LauncherActivityInfoCompat> apps = mLauncherApps.getActivityList(null, user);
+                if (DEBUG_LOADERS) {
+                    Log.d(TAG, "getActivityList took "
+                            + (SystemClock.uptimeMillis()-qiaTime) + "ms for user " + user);
+                    Log.d(TAG, "getActivityList got " + apps.size() + " apps for user " + user);
+                }
+                // Fail if we don't have any apps
+                if (apps == null || apps.isEmpty()) {
+                    return;
+                }
+                // Sort the applications by name
+                final long sortTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
+                Collections.sort(apps,
+                        new LauncherModel.ShortcutNameComparator(mLabelCache));
+                if (DEBUG_LOADERS) {
+                    Log.d(TAG, "sort took "
+                            + (SystemClock.uptimeMillis()-sortTime) + "ms");
+                }
 
-            // Query for the set of apps
-            final long qiaTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
-            List<ResolveInfo> apps = packageManager.queryIntentActivities(mainIntent, 0);
-            if (DEBUG_LOADERS) {
-                Log.d(TAG, "queryIntentActivities took "
-                        + (SystemClock.uptimeMillis()-qiaTime) + "ms");
-                Log.d(TAG, "queryIntentActivities got " + apps.size() + " apps");
+                // Create the ApplicationInfos
+                for (int i = 0; i < apps.size(); i++) {
+                    LauncherActivityInfoCompat app = apps.get(i);
+                    // This builds the icon bitmaps.
+                    mBgAllAppsList.add(new AppInfo(mContext, app, user, mIconCache, mLabelCache));
+                }
             }
-            // Fail if we don't have any apps
-            if (apps == null || apps.isEmpty()) {
-                return;
-            }
-            // Sort the applications by name
-            final long sortTime = DEBUG_LOADERS ? SystemClock.uptimeMillis() : 0;
-            Collections.sort(apps,
-                    new LauncherModel.ShortcutNameComparator(packageManager, mLabelCache));
-            if (DEBUG_LOADERS) {
-                Log.d(TAG, "sort took "
-                        + (SystemClock.uptimeMillis()-sortTime) + "ms");
-            }
-
-            // Create the ApplicationInfos
-            for (int i = 0; i < apps.size(); i++) {
-                ResolveInfo app = apps.get(i);
-                // This builds the icon bitmaps.
-                mBgAllAppsList.add(new AppInfo(packageManager, app,
-                        mIconCache, mLabelCache));
-            }
-
             // Huh? Shouldn't this be inside the Runnable below?
             final ArrayList<AppInfo> added = mBgAllAppsList.added;
             mBgAllAppsList.added = new ArrayList<AppInfo>();
@@ -2675,6 +2717,7 @@
     private class PackageUpdatedTask implements Runnable {
         int mOp;
         String[] mPackages;
+        UserHandleCompat mUser;
 
         public static final int OP_NONE = 0;
         public static final int OP_ADD = 1;
@@ -2683,9 +2726,10 @@
         public static final int OP_UNAVAILABLE = 4; // external media unmounted
 
 
-        public PackageUpdatedTask(int op, String[] packages) {
+        public PackageUpdatedTask(int op, String[] packages, UserHandleCompat user) {
             mOp = op;
             mPackages = packages;
+            mUser = user;
         }
 
         public void run() {
@@ -2697,14 +2741,14 @@
                 case OP_ADD:
                     for (int i=0; i<N; i++) {
                         if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.addPackage " + packages[i]);
-                        mIconCache.remove(packages[i]);
-                        mBgAllAppsList.addPackage(context, packages[i]);
+                        mIconCache.remove(packages[i], mUser);
+                        mBgAllAppsList.addPackage(context, packages[i], mUser);
                     }
                     break;
                 case OP_UPDATE:
                     for (int i=0; i<N; i++) {
                         if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.updatePackage " + packages[i]);
-                        mBgAllAppsList.updatePackage(context, packages[i]);
+                        mBgAllAppsList.updatePackage(context, packages[i], mUser);
                         WidgetPreviewLoader.removePackageFromDb(
                                 mApp.getWidgetPreviewCacheDb(), packages[i]);
                     }
@@ -2713,7 +2757,7 @@
                 case OP_UNAVAILABLE:
                     for (int i=0; i<N; i++) {
                         if (DEBUG_LOADERS) Log.d(TAG, "mAllAppsList.removePackage " + packages[i]);
-                        mBgAllAppsList.removePackage(packages[i]);
+                        mBgAllAppsList.removePackage(packages[i], mUser);
                         WidgetPreviewLoader.removePackageFromDb(
                                 mApp.getWidgetPreviewCacheDb(), packages[i]);
                     }
@@ -2759,7 +2803,7 @@
                 // Update the launcher db to reflect the changes
                 for (AppInfo a : modifiedFinal) {
                     ArrayList<ItemInfo> infos =
-                            getItemInfoForComponentName(a.componentName);
+                            getItemInfoForComponentName(a.componentName, mUser);
                     for (ItemInfo i : infos) {
                         if (isShortcutInfoUpdateable(i)) {
                             ShortcutInfo info = (ShortcutInfo) i;
@@ -2788,21 +2832,21 @@
                 // Mark disabled packages in the broadcast to be removed
                 final PackageManager pm = context.getPackageManager();
                 for (int i=0; i<N; i++) {
-                    if (isPackageDisabled(pm, packages[i])) {
+                    if (isPackageDisabled(context, packages[i], mUser)) {
                         removedPackageNames.add(packages[i]);
                     }
                 }
             }
             // Remove all the components associated with this package
             for (String pn : removedPackageNames) {
-                ArrayList<ItemInfo> infos = getItemInfoForPackageName(pn);
+                ArrayList<ItemInfo> infos = getItemInfoForPackageName(pn, mUser);
                 for (ItemInfo i : infos) {
                     deleteItemFromDatabase(context, i);
                 }
             }
             // Remove all the specific components
             for (AppInfo a : removedApps) {
-                ArrayList<ItemInfo> infos = getItemInfoForComponentName(a.componentName);
+                ArrayList<ItemInfo> infos = getItemInfoForComponentName(a.componentName, mUser);
                 for (ItemInfo i : infos) {
                     deleteItemFromDatabase(context, i);
                 }
@@ -2818,14 +2862,14 @@
                     public void run() {
                         Callbacks cb = mCallbacks != null ? mCallbacks.get() : null;
                         if (callbacks == cb && cb != null) {
-                            callbacks.bindComponentsRemoved(removedPackageNames, removedApps);
+                            callbacks.bindComponentsRemoved(removedPackageNames, removedApps, mUser);
                         }
                     }
                 });
             }
 
             final ArrayList<Object> widgetsAndShortcuts =
-                getSortedWidgetsAndShortcuts(context);
+                    getSortedWidgetsAndShortcuts(context);
             mHandler.post(new Runnable() {
                 @Override
                 public void run() {
@@ -2860,31 +2904,22 @@
         return widgetsAndShortcuts;
     }
 
-    private static boolean isPackageDisabled(PackageManager pm, String packageName) {
-        try {
-            PackageInfo pi = pm.getPackageInfo(packageName, 0);
-            return !pi.applicationInfo.enabled;
-        } catch (NameNotFoundException e) {
-            // Fall through
-        }
-        return false;
+    private static boolean isPackageDisabled(Context context, String packageName,
+            UserHandleCompat user) {
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
+        return !launcherApps.isPackageEnabledForProfile(packageName, user);
     }
 
-    public static boolean isValidPackageComponent(PackageManager pm, ComponentName cn) {
+    public static boolean isValidPackageActivity(Context context, ComponentName cn,
+            UserHandleCompat user) {
         if (cn == null) {
             return false;
         }
-        if (isPackageDisabled(pm, cn.getPackageName())) {
+        final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(context);
+        if (!launcherApps.isPackageEnabledForProfile(cn.getPackageName(), user)) {
             return false;
         }
-
-        try {
-            // Check the activity
-            PackageInfo pi = pm.getPackageInfo(cn.getPackageName(), 0);
-            return (pm.getActivityInfo(cn, 0) != null);
-        } catch (NameNotFoundException e) {
-            return false;
-        }
+        return launcherApps.isActivityEnabledForProfile(cn, user);
     }
 
     /**
@@ -2898,7 +2933,8 @@
         } else {
             info.title = "";
         }
-        info.setIcon(mIconCache.getIcon(intent, info.title.toString()));
+        info.user = UserHandleCompat.myUserHandle();
+        info.setIcon(mIconCache.getIcon(intent, info.title.toString(), info.user));
         info.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
         info.restoredIntent = intent;
         return info;
@@ -2926,8 +2962,9 @@
      * This is called from the code that adds shortcuts from the intent receiver.  This
      * doesn't have a Cursor, but
      */
-    public ShortcutInfo getShortcutInfo(PackageManager manager, Intent intent, Context context) {
-        return getShortcutInfo(manager, intent, context, null, -1, -1, null);
+    public ShortcutInfo getShortcutInfo(PackageManager manager, Intent intent,
+            UserHandleCompat user, Context context) {
+        return getShortcutInfo(manager, intent, user, context, null, -1, -1, null);
     }
 
     /**
@@ -2935,54 +2972,37 @@
      *
      * If c is not null, then it will be used to fill in missing data like the title and icon.
      */
-    public ShortcutInfo getShortcutInfo(PackageManager manager, Intent intent, Context context,
-            Cursor c, int iconIndex, int titleIndex, HashMap<Object, CharSequence> labelCache) {
-        ComponentName componentName = intent.getComponent();
-        final ShortcutInfo info = new ShortcutInfo();
-        if (componentName != null && !isValidPackageComponent(manager, componentName)) {
-            Log.d(TAG, "Invalid package found in getShortcutInfo: " + componentName);
+    public ShortcutInfo getShortcutInfo(PackageManager manager, Intent intent,
+            UserHandleCompat user, Context context, Cursor c, int iconIndex, int titleIndex,
+            HashMap<Object, CharSequence> labelCache) {
+        if (user == null) {
+            Log.d(TAG, "Null user found in getShortcutInfo");
             return null;
-        } else {
-            try {
-                PackageInfo pi = manager.getPackageInfo(componentName.getPackageName(), 0);
-                info.initFlagsAndFirstInstallTime(pi);
-            } catch (NameNotFoundException e) {
-                Log.d(TAG, "getPackInfo failed for package " +
-                        componentName.getPackageName());
-            }
         }
 
-        // TODO: See if the PackageManager knows about this case.  If it doesn't
-        // then return null & delete this.
+        ComponentName componentName = intent.getComponent();
+        if (componentName == null) {
+            Log.d(TAG, "Missing component found in getShortcutInfo: " + componentName);
+            return null;
+        }
+
+        Intent newIntent = new Intent(intent.getAction(), null);
+        newIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+        newIntent.setComponent(componentName);
+        LauncherActivityInfoCompat lai = mLauncherApps.resolveActivity(newIntent, user);
+        if (lai == null) {
+            Log.d(TAG, "Missing activity found in getShortcutInfo: " + componentName);
+            return null;
+        }
+
+        final ShortcutInfo info = new ShortcutInfo();
 
         // the resource -- This may implicitly give us back the fallback icon,
         // but don't worry about that.  All we're doing with usingFallbackIcon is
         // to avoid saving lots of copies of that in the database, and most apps
         // have icons anyway.
+        Bitmap icon = mIconCache.getIcon(componentName, lai, labelCache);
 
-        // Attempt to use queryIntentActivities to get the ResolveInfo (with IntentFilter info) and
-        // if that fails, or is ambiguious, fallback to the standard way of getting the resolve info
-        // via resolveActivity().
-        Bitmap icon = null;
-        ResolveInfo resolveInfo = null;
-        ComponentName oldComponent = intent.getComponent();
-        Intent newIntent = new Intent(intent.getAction(), null);
-        newIntent.addCategory(Intent.CATEGORY_LAUNCHER);
-        newIntent.setPackage(oldComponent.getPackageName());
-        List<ResolveInfo> infos = manager.queryIntentActivities(newIntent, 0);
-        for (ResolveInfo i : infos) {
-            ComponentName cn = new ComponentName(i.activityInfo.packageName,
-                    i.activityInfo.name);
-            if (cn.equals(oldComponent)) {
-                resolveInfo = i;
-            }
-        }
-        if (resolveInfo == null) {
-            resolveInfo = manager.resolveActivity(intent, 0);
-        }
-        if (resolveInfo != null) {
-            icon = mIconCache.getIcon(componentName, resolveInfo, labelCache);
-        }
         // the db
         if (icon == null) {
             if (c != null) {
@@ -2991,21 +3011,21 @@
         }
         // the fallback icon
         if (icon == null) {
-            icon = getFallbackIcon();
+            icon = mIconCache.getDefaultIcon(user);
             info.usingFallbackIcon = true;
         }
         info.setIcon(icon);
 
+        // From the cache.
+        if (labelCache != null) {
+            info.title = labelCache.get(componentName);
+        }
+
         // from the resource
-        if (resolveInfo != null) {
-            ComponentName key = LauncherModel.getComponentNameFromResolveInfo(resolveInfo);
-            if (labelCache != null && labelCache.containsKey(key)) {
-                info.title = labelCache.get(key);
-            } else {
-                info.title = resolveInfo.activityInfo.loadLabel(manager);
-                if (labelCache != null) {
-                    labelCache.put(key, info.title);
-                }
+        if (info.title == null && lai != null) {
+            info.title = lai.getLabel();
+            if (labelCache != null) {
+                labelCache.put(componentName, info.title);
             }
         }
         // from the db
@@ -3019,6 +3039,7 @@
             info.title = componentName.getClassName();
         }
         info.itemType = LauncherSettings.Favorites.ITEM_TYPE_APPLICATION;
+        info.user = user;
         return info;
     }
 
@@ -3051,21 +3072,27 @@
         return new ArrayList<ItemInfo>(filtered);
     }
 
-    private ArrayList<ItemInfo> getItemInfoForPackageName(final String pn) {
+    private ArrayList<ItemInfo> getItemInfoForPackageName(final String pn,
+            final UserHandleCompat user) {
         ItemInfoFilter filter  = new ItemInfoFilter() {
             @Override
             public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) {
-                return cn.getPackageName().equals(pn);
+                return cn.getPackageName().equals(pn) && info.user.equals(user);
             }
         };
         return filterItemInfos(sBgItemsIdMap.values(), filter);
     }
 
-    private ArrayList<ItemInfo> getItemInfoForComponentName(final ComponentName cname) {
+    private ArrayList<ItemInfo> getItemInfoForComponentName(final ComponentName cname,
+            final UserHandleCompat user) {
         ItemInfoFilter filter  = new ItemInfoFilter() {
             @Override
             public boolean filterItem(ItemInfo parent, ItemInfo info, ComponentName cn) {
-                return cn.equals(cname);
+                if (info.user == null) {
+                    return cn.equals(cname);
+                } else {
+                    return cn.equals(cname) && info.user.equals(user);
+                }
             }
         };
         return filterItemInfos(sBgItemsIdMap.values(), filter);
@@ -3100,6 +3127,8 @@
 
         Bitmap icon = null;
         final ShortcutInfo info = new ShortcutInfo();
+        // Non-app shortcuts are only supported for current user.
+        info.user = UserHandleCompat.myUserHandle();
         info.itemType = LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT;
 
         // TODO: If there's an explicit component and we can't install that, delete it.
@@ -3130,14 +3159,14 @@
             }
             // the fallback icon
             if (icon == null) {
-                icon = getFallbackIcon();
+                icon = mIconCache.getDefaultIcon(info.user);
                 info.usingFallbackIcon = true;
             }
             break;
         case LauncherSettings.Favorites.ICON_TYPE_BITMAP:
             icon = getIconFromCursor(c, iconIndex, context);
             if (icon == null) {
-                icon = getFallbackIcon();
+                icon = mIconCache.getDefaultIcon(info.user);
                 info.customIcon = false;
                 info.usingFallbackIcon = true;
             } else {
@@ -3145,7 +3174,7 @@
             }
             break;
         default:
-            icon = getFallbackIcon();
+            icon = mIconCache.getDefaultIcon(info.user);
             info.usingFallbackIcon = true;
             info.customIcon = false;
             break;
@@ -3262,7 +3291,8 @@
                             iconResource.packageName);
                     final int id = resources.getIdentifier(iconResource.resourceName, null, null);
                     icon = Utilities.createIconBitmap(
-                            mIconCache.getFullResIcon(resources, id), context);
+                            mIconCache.getFullResIcon(resources, id),
+                            context);
                 } catch (Exception e) {
                     Log.w(TAG, "Could not load shortcut icon: " + extra);
                 }
@@ -3271,11 +3301,14 @@
 
         final ShortcutInfo info = new ShortcutInfo();
 
+        // Only support intents for current user for now. Intents sent from other
+        // users wouldn't get here without intent forwarding anyway.
+        info.user = UserHandleCompat.myUserHandle();
         if (icon == null) {
             if (fallbackIcon != null) {
                 icon = fallbackIcon;
             } else {
-                icon = getFallbackIcon();
+                icon = mIconCache.getDefaultIcon(info.user);
                 info.usingFallbackIcon = true;
             }
         }
@@ -3347,12 +3380,18 @@
         final Collator collator = Collator.getInstance();
         return new Comparator<AppInfo>() {
             public final int compare(AppInfo a, AppInfo b) {
-                int result = collator.compare(a.title.toString().trim(),
-                        b.title.toString().trim());
-                if (result == 0) {
-                    result = a.componentName.compareTo(b.componentName);
+                if (a.user.equals(b.user)) {
+                    int result = collator.compare(a.title.toString().trim(),
+                            b.title.toString().trim());
+                    if (result == 0) {
+                        result = a.componentName.compareTo(b.componentName);
+                    }
+                    return result;
+                } else {
+                    // TODO Need to figure out rules for sorting
+                    // profiles, this puts work second.
+                    return a.user.toString().compareTo(b.user.toString());
                 }
-                return result;
             }
         };
     }
@@ -3379,35 +3418,32 @@
             return new ComponentName(info.serviceInfo.packageName, info.serviceInfo.name);
         }
     }
-    public static class ShortcutNameComparator implements Comparator<ResolveInfo> {
+    public static class ShortcutNameComparator implements Comparator<LauncherActivityInfoCompat> {
         private Collator mCollator;
-        private PackageManager mPackageManager;
         private HashMap<Object, CharSequence> mLabelCache;
         ShortcutNameComparator(PackageManager pm) {
-            mPackageManager = pm;
             mLabelCache = new HashMap<Object, CharSequence>();
             mCollator = Collator.getInstance();
         }
-        ShortcutNameComparator(PackageManager pm, HashMap<Object, CharSequence> labelCache) {
-            mPackageManager = pm;
+        ShortcutNameComparator(HashMap<Object, CharSequence> labelCache) {
             mLabelCache = labelCache;
             mCollator = Collator.getInstance();
         }
-        public final int compare(ResolveInfo a, ResolveInfo b) {
+        public final int compare(LauncherActivityInfoCompat a, LauncherActivityInfoCompat b) {
             CharSequence labelA, labelB;
-            ComponentName keyA = LauncherModel.getComponentNameFromResolveInfo(a);
-            ComponentName keyB = LauncherModel.getComponentNameFromResolveInfo(b);
+            ComponentName keyA = a.getComponentName();
+            ComponentName keyB = b.getComponentName();
             if (mLabelCache.containsKey(keyA)) {
                 labelA = mLabelCache.get(keyA);
             } else {
-                labelA = a.loadLabel(mPackageManager).toString().trim();
+                labelA = a.getLabel().toString().trim();
 
                 mLabelCache.put(keyA, labelA);
             }
             if (mLabelCache.containsKey(keyB)) {
                 labelB = mLabelCache.get(keyB);
             } else {
-                labelB = b.loadLabel(mPackageManager).toString().trim();
+                labelB = b.getLabel().toString().trim();
 
                 mLabelCache.put(keyB, labelB);
             }
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 9a004f2..437c2ad 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -56,8 +56,10 @@
 import android.util.SparseArray;
 import android.util.Xml;
 
-import com.android.launcher3.LauncherSettings.Favorites;
+import com.android.launcher3.compat.UserHandleCompat;
+import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.ProviderConfig;
+import com.android.launcher3.LauncherSettings.Favorites;
 
 import org.xmlpull.v1.XmlPullParser;
 import org.xmlpull.v1.XmlPullParserException;
@@ -75,7 +77,7 @@
 
     private static final String DATABASE_NAME = "launcher.db";
 
-    private static final int DATABASE_VERSION = 18;
+    private static final int DATABASE_VERSION = 20;
 
     static final String OLD_AUTHORITY = "com.android.launcher2.settings";
     static final String AUTHORITY = ProviderConfig.AUTHORITY;
@@ -429,6 +431,10 @@
             mMaxScreenId = 0;
             mNewDbCreated = true;
 
+            UserManagerCompat userManager = UserManagerCompat.getInstance(mContext);
+            long userSerialNumber = userManager.getSerialNumberForUser(
+                    UserHandleCompat.myUserHandle());
+
             db.execSQL("CREATE TABLE favorites (" +
                     "_id INTEGER PRIMARY KEY," +
                     "title TEXT," +
@@ -450,7 +456,8 @@
                     "displayMode INTEGER," +
                     "appWidgetProvider TEXT," +
                     "modified INTEGER NOT NULL DEFAULT 0," +
-                    "restored INTEGER NOT NULL DEFAULT 0" +
+                    "restored INTEGER NOT NULL DEFAULT 0," +
+                    "profileId INTEGER DEFAULT " + userSerialNumber +
                     ");");
             addWorkspacesTable(db);
 
@@ -503,10 +510,34 @@
         }
 
         private void removeOrphanedItems(SQLiteDatabase db) {
-            db.execSQL("DELETE FROM " + TABLE_FAVORITES + " WHERE " +
+            // Delete items directly on the workspace who's screen id doesn't exist
+            //  "DELETE FROM favorites WHERE screen NOT IN (SELECT _id FROM workspaceScreens)
+            //   AND container = -100"
+            String removeOrphanedDesktopItems = "DELETE FROM " + TABLE_FAVORITES +
+                    " WHERE " +
                     LauncherSettings.Favorites.SCREEN + " NOT IN (SELECT " +
-                    LauncherSettings.WorkspaceScreens._ID + " FROM " + TABLE_WORKSPACE_SCREENS +
-                    ")");
+                    LauncherSettings.WorkspaceScreens._ID + " FROM " + TABLE_WORKSPACE_SCREENS + ")" +
+                    " AND " +
+                    LauncherSettings.Favorites.CONTAINER + " = " +
+                    LauncherSettings.Favorites.CONTAINER_DESKTOP;
+            db.execSQL(removeOrphanedDesktopItems);
+
+            // Delete items contained in folders which no longer exist (after above statement)
+            //  "DELETE FROM favorites  WHERE container <> -100 AND container <> -101 AND container
+            //   NOT IN (SELECT _id FROM favorites WHERE itemType = 2)"
+            String removeOrphanedFolderItems = "DELETE FROM " + TABLE_FAVORITES +
+                    " WHERE " +
+                    LauncherSettings.Favorites.CONTAINER + " <> " +
+                    LauncherSettings.Favorites.CONTAINER_DESKTOP +
+                    " AND "
+                    + LauncherSettings.Favorites.CONTAINER + " <> " +
+                    LauncherSettings.Favorites.CONTAINER_HOTSEAT +
+                    " AND "
+                    + LauncherSettings.Favorites.CONTAINER + " NOT IN (SELECT " +
+                    LauncherSettings.Favorites._ID + " FROM " + TABLE_FAVORITES +
+                    " WHERE " + LauncherSettings.Favorites.ITEM_TYPE + " = " +
+                    LauncherSettings.Favorites.ITEM_TYPE_FOLDER + ")";
+            db.execSQL(removeOrphanedFolderItems);
         }
 
         private void setFlagJustLoadedOldDb() {
@@ -810,14 +841,25 @@
             }
 
             if (version < 18) {
+                // No-op
+                version = 18;
+            }
+
+            if (version < 19) {
                 // Due to a data loss bug, some users may have items associated with screen ids
                 // which no longer exist. Since this can cause other problems, and since the user
                 // will never see these items anyway, we use database upgrade as an opportunity to
                 // clean things up.
+                removeOrphanedItems(db);
+                version = 19;
+            }
 
-                // TODO: this needs to be fixed, currently causes data loss.
-                //removeOrphanedItems(db);
-                version = 18;
+            if (version < 20) {
+                // Add userId column
+                if (addProfileColumn(db)) {
+                    version = 20;
+                }
+                // else old version remains, which means we wipe old data
             }
 
             if (version != DATABASE_VERSION) {
@@ -829,6 +871,29 @@
             }
         }
 
+        private boolean addProfileColumn(SQLiteDatabase db) {
+            db.beginTransaction();
+            try {
+                UserManagerCompat userManager = UserManagerCompat.getInstance(mContext);
+                // Default to the serial number of this user, for older
+                // shortcuts.
+                long userSerialNumber = userManager.getSerialNumberForUser(
+                        UserHandleCompat.myUserHandle());
+                // Insert new column for holding user serial number
+                db.execSQL("ALTER TABLE favorites " +
+                        "ADD COLUMN profileId INTEGER DEFAULT "
+                                        + userSerialNumber + ";");
+                db.setTransactionSuccessful();
+            } catch (SQLException ex) {
+                // Old version remains, which means we wipe old data
+                Log.e(TAG, ex.getMessage(), ex);
+                return false;
+            } finally {
+                db.endTransaction();
+            }
+            return true;
+        }
+
         private boolean updateContactsShortcuts(SQLiteDatabase db) {
             final String selectWhere = buildOrWhereString(Favorites.ITEM_TYPE,
                     new int[] { Favorites.ITEM_TYPE_SHORTCUT });
@@ -1759,6 +1824,8 @@
                                 = c.getColumnIndexOrThrow(LauncherSettings.Favorites.URI);
                         final int displayModeIndex
                                 = c.getColumnIndexOrThrow(LauncherSettings.Favorites.DISPLAY_MODE);
+                        final int profileIndex
+                                = c.getColumnIndex(LauncherSettings.Favorites.PROFILE_ID);
 
                         int i = 0;
                         int curX = 0;
@@ -1790,6 +1857,19 @@
                             final int screen = c.getInt(screenIndex);
                             int container = c.getInt(containerIndex);
                             final String intentStr = c.getString(intentIndex);
+
+                            UserManagerCompat userManager = UserManagerCompat.getInstance(mContext);
+                            UserHandleCompat userHandle;
+                            final long userSerialNumber;
+                            if (profileIndex != -1 && !c.isNull(profileIndex)) {
+                                userSerialNumber = c.getInt(profileIndex);
+                                userHandle = userManager.getUserForSerialNumber(userSerialNumber);
+                            } else {
+                                // Default to the serial number of this user, for older
+                                // shortcuts.
+                                userHandle = UserHandleCompat.myUserHandle();
+                                userSerialNumber = userManager.getSerialNumberForUser(userHandle);
+                            }
                             Launcher.addDumpLog(TAG, "migrating \""
                                 + c.getString(titleIndex) + "\" ("
                                 + cellX + "," + cellY + "@"
@@ -1816,7 +1896,8 @@
                                     Launcher.addDumpLog(TAG, "skipping empty intent", true);
                                     continue;
                                 } else if (cn != null &&
-                                        !LauncherModel.isValidPackageComponent(pm, cn)) {
+                                        !LauncherModel.isValidPackageActivity(mContext, cn,
+                                                userHandle)) {
                                     // component no longer exists.
                                     Launcher.addDumpLog(TAG, "skipping item whose component " +
                                             "no longer exists.", true);
@@ -1855,6 +1936,7 @@
                             values.put(LauncherSettings.Favorites.URI, c.getString(uriIndex));
                             values.put(LauncherSettings.Favorites.DISPLAY_MODE,
                                     c.getInt(displayModeIndex));
+                            values.put(LauncherSettings.Favorites.PROFILE_ID, userSerialNumber);
 
                             if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                                 hotseat.put(screen, values);
diff --git a/src/com/android/launcher3/LauncherSettings.java b/src/com/android/launcher3/LauncherSettings.java
index 2a768a2..3553702 100644
--- a/src/com/android/launcher3/LauncherSettings.java
+++ b/src/com/android/launcher3/LauncherSettings.java
@@ -212,6 +212,14 @@
         static final String SPANY = "spanY";
 
         /**
+         * The profile id of the item in the cell.
+         * <P>
+         * Type: INTEGER
+         * </P>
+         */
+        static final String PROFILE_ID = "profileId";
+
+        /**
          * The favorite is a user created folder
          */
         static final int ITEM_TYPE_FOLDER = 2;
diff --git a/src/com/android/launcher3/MainThreadExecutor.java b/src/com/android/launcher3/MainThreadExecutor.java
new file mode 100644
index 0000000..866b17c
--- /dev/null
+++ b/src/com/android/launcher3/MainThreadExecutor.java
@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License
+ */
+
+package com.android.launcher3;
+
+import android.os.Handler;
+import android.os.Looper;
+
+import java.util.List;
+import java.util.concurrent.AbstractExecutorService;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * An executor service that executes its tasks on the main thread.
+ *
+ * Shutting down this executor is not supported.
+ */
+public class MainThreadExecutor extends AbstractExecutorService {
+
+    private Handler mHandler = new Handler(Looper.getMainLooper());
+
+    @Override
+    public void execute(Runnable runnable) {
+        if (Looper.getMainLooper() == Looper.myLooper()) {
+            runnable.run();
+        } else {
+            mHandler.post(runnable);
+        }
+    }
+
+    /**
+     * Not supported and throws an exception when used.
+     */
+    @Override
+    @Deprecated
+    public void shutdown() {
+        throw new UnsupportedOperationException();
+    }
+
+    /**
+     * Not supported and throws an exception when used.
+     */
+    @Override
+    @Deprecated
+    public List<Runnable> shutdownNow() {
+        throw new UnsupportedOperationException();
+    }
+
+    @Override
+    public boolean isShutdown() {
+        return false;
+    }
+
+    @Override
+    public boolean isTerminated() {
+        return false;
+    }
+
+    /**
+     * Not supported and throws an exception when used.
+     */
+    @Override
+    @Deprecated
+    public boolean awaitTermination(long l, TimeUnit timeUnit) throws InterruptedException {
+        throw new UnsupportedOperationException();
+    }
+}
diff --git a/src/com/android/launcher3/ShortcutInfo.java b/src/com/android/launcher3/ShortcutInfo.java
index 5afa784..f40cf9f 100644
--- a/src/com/android/launcher3/ShortcutInfo.java
+++ b/src/com/android/launcher3/ShortcutInfo.java
@@ -26,7 +26,10 @@
 import android.graphics.Bitmap;
 import android.util.Log;
 
+import com.android.launcher3.compat.UserHandleCompat;
+
 import java.util.ArrayList;
+import java.util.Arrays;
 
 /**
  * Represents a launchable icon on the workspaces and in folders.
@@ -110,12 +113,12 @@
         }
     }
 
-
-    ShortcutInfo(Intent intent, CharSequence title, Bitmap icon) {
+    ShortcutInfo(Intent intent, CharSequence title, Bitmap icon, UserHandleCompat user) {
         this();
         this.intent = intent;
         this.title = title;
         mIcon = icon;
+        this.user = user;
     }
 
     public ShortcutInfo(Context context, ShortcutInfo info) {
@@ -129,8 +132,9 @@
         }
         mIcon = info.mIcon; // TODO: should make a copy here.  maybe we don't need this ctor at all
         customIcon = info.customIcon;
-        initFlagsAndFirstInstallTime(
-                getPackageInfo(context, intent.getComponent().getPackageName()));
+        flags = info.flags;
+        firstInstallTime = info.firstInstallTime;
+        user = info.user;
     }
 
     /** TODO: Remove this.  It's only called by ApplicationInfo.makeShortcut. */
@@ -143,22 +147,6 @@
         firstInstallTime = info.firstInstallTime;
     }
 
-    public static PackageInfo getPackageInfo(Context context, String packageName) {
-        PackageInfo pi = null;
-        try {
-            PackageManager pm = context.getPackageManager();
-            pi = pm.getPackageInfo(packageName, 0);
-        } catch (NameNotFoundException e) {
-            Log.d("ShortcutInfo", "PackageManager.getPackageInfo failed for " + packageName);
-        }
-        return pi;
-    }
-
-    void initFlagsAndFirstInstallTime(PackageInfo pi) {
-        flags = AppInfo.initFlags(pi);
-        firstInstallTime = AppInfo.initFirstInstallTime(pi);
-    }
-
     public void setIcon(Bitmap b) {
         mIcon = b;
     }
@@ -171,30 +159,13 @@
     }
 
     public void updateIcon(IconCache iconCache) {
-        mIcon = iconCache.getIcon(intent);
-        usingFallbackIcon = iconCache.isDefaultIcon(mIcon);
-    }
-
-    /**
-     * Creates the application intent based on a component name and various launch flags.
-     * Sets {@link #itemType} to {@link LauncherSettings.BaseLauncherColumns#ITEM_TYPE_APPLICATION}.
-     *
-     * @param className the class name of the component representing the intent
-     * @param launchFlags the launch flags
-     */
-    final void setActivity(Context context, ComponentName className, int launchFlags) {
-        intent = new Intent(Intent.ACTION_MAIN);
-        intent.addCategory(Intent.CATEGORY_LAUNCHER);
-        intent.setComponent(className);
-        intent.setFlags(launchFlags);
-        itemType = LauncherSettings.BaseLauncherColumns.ITEM_TYPE_APPLICATION;
-        initFlagsAndFirstInstallTime(
-                getPackageInfo(context, intent.getComponent().getPackageName()));
+        mIcon = iconCache.getIcon(intent, user);
+        usingFallbackIcon = iconCache.isDefaultIcon(mIcon, user);
     }
 
     @Override
-    void onAddToDatabase(ContentValues values) {
-        super.onAddToDatabase(values);
+    void onAddToDatabase(Context context, ContentValues values) {
+        super.onAddToDatabase(context, values);
 
         String titleStr = title != null ? title.toString() : null;
         values.put(LauncherSettings.BaseLauncherColumns.TITLE, titleStr);
@@ -223,10 +194,10 @@
 
     @Override
     public String toString() {
-        return "ShortcutInfo(title=" + title.toString() + "intent=" + intent + "id=" + this.id
+        return "ShortcutInfo(title=" + title + "intent=" + intent + "id=" + this.id
                 + " type=" + this.itemType + " container=" + this.container + " screen=" + screenId
                 + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX + " spanY=" + spanY
-                + " dropPos=" + dropPos + ")";
+                + " dropPos=" + Arrays.toString(dropPos) + " user=" + user + ")";
     }
 
     public static void dumpShortcutInfoList(String tag, String label,
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index cbc9785..8deadf1 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -305,6 +305,17 @@
         return scale;
     }
 
+    /**
+     * Utility method to determine whether the given point, in local coordinates,
+     * is inside the view, where the area of the view is expanded by the slop factor.
+     * This method is called while processing touch-move events to determine if the event
+     * is still within the view.
+     */
+    public static boolean pointInView(View v, float localX, float localY, float slop) {
+        return localX >= -slop && localY >= -slop && localX < (v.getWidth() + slop) &&
+                localY < (v.getHeight() + slop);
+    }
+
     private static void initStatics(Context context) {
         final Resources resources = context.getResources();
         final DisplayMetrics metrics = resources.getDisplayMetrics();
diff --git a/src/com/android/launcher3/WidgetPreviewLoader.java b/src/com/android/launcher3/WidgetPreviewLoader.java
index 36152f8..1b37700 100644
--- a/src/com/android/launcher3/WidgetPreviewLoader.java
+++ b/src/com/android/launcher3/WidgetPreviewLoader.java
@@ -9,6 +9,7 @@
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.database.Cursor;
+import android.database.sqlite.SQLiteCantOpenDatabaseException;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteDiskIOException;
 import android.database.sqlite.SQLiteOpenHelper;
@@ -30,11 +31,16 @@
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
+import java.io.IOException;
 import java.lang.ref.SoftReference;
 import java.lang.ref.WeakReference;
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.HashMap;
 import java.util.HashSet;
+import java.util.List;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
 
 abstract class SoftReferenceThreadLocal<T> {
     private ThreadLocal<SoftReference<T>> mThreadLocal;
@@ -137,6 +143,8 @@
     private final ArrayList<SoftReference<Bitmap>> mUnusedBitmaps;
     private final static HashSet<String> sInvalidPackages;
 
+    private final MainThreadExecutor mMainThreadExecutor = new MainThreadExecutor();
+
     static {
         sInvalidPackages = new HashSet<String>();
     }
@@ -358,6 +366,9 @@
             db.insert(CacheDb.TABLE_NAME, null, values);
         } catch (SQLiteDiskIOException e) {
             recreateDb();
+        } catch (SQLiteCantOpenDatabaseException e) {
+            dumpOpenFiles();
+            throw e;
         }
     }
 
@@ -367,6 +378,9 @@
         try {
             db.delete(CacheDb.TABLE_NAME, null, null);
         } catch (SQLiteDiskIOException e) {
+        } catch (SQLiteCantOpenDatabaseException e) {
+            dumpOpenFiles();
+            throw e;
         }
     }
 
@@ -387,6 +401,9 @@
                             } // args to SELECT query
                     );
                 } catch (SQLiteDiskIOException e) {
+                } catch (SQLiteCantOpenDatabaseException e) {
+                    dumpOpenFiles();
+                    throw e;
                 }
                 synchronized(sInvalidPackages) {
                     sInvalidPackages.remove(packageName);
@@ -405,6 +422,9 @@
                             CacheDb.COLUMN_NAME + " = ? ", // SELECT query
                             new String[] { objectName }); // args to SELECT query
                 } catch (SQLiteDiskIOException e) {
+                } catch (SQLiteCantOpenDatabaseException e) {
+                    dumpOpenFiles();
+                    throw e;
                 }
                 return null;
             }
@@ -430,6 +450,9 @@
         } catch (SQLiteDiskIOException e) {
             recreateDb();
             return null;
+        } catch (SQLiteCantOpenDatabaseException e) {
+            dumpOpenFiles();
+            throw e;
         }
         if (result.getCount() > 0) {
             result.moveToFirst();
@@ -493,7 +516,9 @@
         Drawable drawable = null;
         if (previewImage != 0) {
             drawable = mPackageManager.getDrawable(packageName, previewImage, null);
-            if (drawable == null) {
+            if (drawable != null) {
+                drawable = mutateOnMainThread(drawable);
+            } else {
                 Log.w(TAG, "Can't load widget preview drawable 0x" +
                         Integer.toHexString(previewImage) + " for provider: " + provider);
             }
@@ -511,6 +536,7 @@
             if (cellHSpan < 1) cellHSpan = 1;
             if (cellVSpan < 1) cellVSpan = 1;
 
+            // This Drawable is not directly drawn, so there's no need to mutate it.
             BitmapDrawable previewDrawable = (BitmapDrawable) mContext.getResources()
                     .getDrawable(R.drawable.widget_tile);
             final int previewDrawableWidth = previewDrawable
@@ -547,9 +573,11 @@
                         (int) ((previewDrawableWidth - mAppIconSize * iconScale) / 2);
                 int yoffset =
                         (int) ((previewDrawableHeight - mAppIconSize * iconScale) / 2);
-                if (iconId > 0)
+                if (iconId > 0) {
                     icon = mIconCache.getFullResIcon(packageName, iconId);
+                }
                 if (icon != null) {
+                    icon = mutateOnMainThread(icon);
                     renderDrawableToBitmap(icon, defaultPreview, hoffset,
                             yoffset, (int) (mAppIconSize * iconScale),
                             (int) (mAppIconSize * iconScale));
@@ -617,7 +645,7 @@
             c.setBitmap(null);
         }
         // Render the icon
-        Drawable icon = mIconCache.getFullResIcon(info);
+        Drawable icon = mutateOnMainThread(mIconCache.getFullResIcon(info));
 
         int paddingTop = mContext.
                 getResources().getDimensionPixelOffset(R.dimen.shortcut_preview_padding_top);
@@ -677,4 +705,98 @@
         }
     }
 
+    private Drawable mutateOnMainThread(final Drawable drawable) {
+        try {
+            return mMainThreadExecutor.submit(new Callable<Drawable>() {
+                @Override
+                public Drawable call() throws Exception {
+                    return drawable.mutate();
+                }
+            }).get();
+        } catch (InterruptedException e) {
+            Thread.currentThread().interrupt();
+            throw new RuntimeException(e);
+        } catch (ExecutionException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    private static final int MAX_OPEN_FILES = 1024;
+    private static final int SAMPLE_RATE = 23;
+    /**
+     * Dumps all files that are open in this process without allocating a file descriptor.
+     */
+    private static void dumpOpenFiles() {
+        try {
+            Log.i(TAG, "DUMP OF OPEN FILES (sample rate: 1 every " + SAMPLE_RATE + "):");
+            final String TYPE_APK = "apk";
+            final String TYPE_JAR = "jar";
+            final String TYPE_PIPE = "pipe";
+            final String TYPE_SOCKET = "socket";
+            final String TYPE_DB = "db";
+            final String TYPE_ANON_INODE = "anon_inode";
+            final String TYPE_DEV = "dev";
+            final String TYPE_NON_FS = "non-fs";
+            final String TYPE_OTHER = "other";
+            List<String> types = Arrays.asList(TYPE_APK, TYPE_JAR, TYPE_PIPE, TYPE_SOCKET, TYPE_DB,
+                    TYPE_ANON_INODE, TYPE_DEV, TYPE_NON_FS, TYPE_OTHER);
+            int[] count = new int[types.size()];
+            int[] duplicates = new int[types.size()];
+            HashSet<String> files = new HashSet<String>();
+            int total = 0;
+            for (int i = 0; i < MAX_OPEN_FILES; i++) {
+                // This is a gigantic hack but unfortunately the only way to resolve an fd
+                // to a file name. Note that we have to loop over all possible fds because
+                // reading the directory would require allocating a new fd. The kernel is
+                // currently implemented such that no fd is larger then the current rlimit,
+                // which is why it's safe to loop over them in such a way.
+                String fd = "/proc/self/fd/" + i;
+                try {
+                    // getCanonicalPath() uses readlink behind the scene which doesn't require
+                    // a file descriptor.
+                    String resolved = new File(fd).getCanonicalPath();
+                    int type = types.indexOf(TYPE_OTHER);
+                    if (resolved.startsWith("/dev/")) {
+                        type = types.indexOf(TYPE_DEV);
+                    } else if (resolved.endsWith(".apk")) {
+                        type = types.indexOf(TYPE_APK);
+                    } else if (resolved.endsWith(".jar")) {
+                        type = types.indexOf(TYPE_JAR);
+                    } else if (resolved.contains("/fd/pipe:")) {
+                        type = types.indexOf(TYPE_PIPE);
+                    } else if (resolved.contains("/fd/socket:")) {
+                        type = types.indexOf(TYPE_SOCKET);
+                    } else if (resolved.contains("/fd/anon_inode:")) {
+                        type = types.indexOf(TYPE_ANON_INODE);
+                    } else if (resolved.endsWith(".db") || resolved.contains("/databases/")) {
+                        type = types.indexOf(TYPE_DB);
+                    } else if (resolved.startsWith("/proc/") && resolved.contains("/fd/")) {
+                        // Those are the files that don't point anywhere on the file system.
+                        // getCanonicalPath() wrongly interprets these as relative symlinks and
+                        // resolves them within /proc/<pid>/fd/.
+                        type = types.indexOf(TYPE_NON_FS);
+                    }
+                    count[type]++;
+                    total++;
+                    if (files.contains(resolved)) {
+                        duplicates[type]++;
+                    }
+                    files.add(resolved);
+                    if (total % SAMPLE_RATE == 0) {
+                        Log.i(TAG, " fd " + i + ": " + resolved
+                                + " (" + types.get(type) + ")");
+                    }
+                } catch (IOException e) {
+                    // Ignoring exceptions for non-existing file descriptors.
+                }
+            }
+            for (int i = 0; i < types.size(); i++) {
+                Log.i(TAG, String.format("Open %10s files: %4d total, %4d duplicates",
+                        types.get(i), count[i], duplicates[i]));
+            }
+        } catch (Throwable t) {
+            // Catch everything. This is called from an exception handler that we shouldn't upset.
+            Log.e(TAG, "Unable to log open files.", t);
+        }
+    }
 }
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 9800cf3..0669f3a 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -60,6 +60,8 @@
 import android.view.animation.DecelerateInterpolator;
 import android.view.animation.Interpolator;
 import android.widget.TextView;
+
+import com.android.launcher3.compat.UserHandleCompat;
 import com.android.launcher3.FolderIcon.FolderRingAnimator;
 import com.android.launcher3.Launcher.CustomContentCallbacks;
 import com.android.launcher3.LauncherSettings.Favorites;
@@ -126,13 +128,14 @@
     private static boolean sAccessibilityEnabled;
 
     // The screen id used for the empty screen always present to the right.
-    private final static long EXTRA_EMPTY_SCREEN_ID = -201;
+    final static long EXTRA_EMPTY_SCREEN_ID = -201;
     private final static long CUSTOM_CONTENT_SCREEN_ID = -301;
 
     private HashMap<Long, CellLayout> mWorkspaceScreens = new HashMap<Long, CellLayout>();
     private ArrayList<Long> mScreenOrder = new ArrayList<Long>();
 
     private Runnable mRemoveEmptyScreenRunnable;
+    private boolean mDeferRemoveExtraEmptyScreen = false;
 
     /**
      * CellInfo for the cell that is currently being dragged
@@ -395,13 +398,23 @@
             @Override
             public void run() {
                 if (mIsDragOccuring) {
+                    mDeferRemoveExtraEmptyScreen = false;
                     addExtraEmptyScreenOnDrag();
                 }
             }
         });
     }
 
+
+    public void deferRemoveExtraEmptyScreen() {
+        mDeferRemoveExtraEmptyScreen = true;
+    }
+
     public void onDragEnd() {
+        if (!mDeferRemoveExtraEmptyScreen) {
+            removeExtraEmptyScreen(true, mDragSourceInternal != null);
+        }
+
         mIsDragOccuring = false;
         updateChildrenLayersEnabled(false);
         mLauncher.unlockScreenOrientation(false);
@@ -724,11 +737,11 @@
         }
     }
 
-    public void removeExtraEmptyScreen(final boolean animate, final Runnable onComplete) {
-        removeExtraEmptyScreen(animate, onComplete, 0, false);
+    public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) {
+        removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens);
     }
 
-    public void removeExtraEmptyScreen(final boolean animate, final Runnable onComplete,
+    public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete,
             final int delay, final boolean stripEmptyScreens) {
         // Log to disk
         Launcher.addDumpLog(TAG, "11683562 - removeExtraEmptyScreen()", true);
@@ -742,9 +755,8 @@
             postDelayed(new Runnable() {
                 @Override
                 public void run() {
-                    removeExtraEmptyScreen(animate, onComplete, 0, stripEmptyScreens);
+                    removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens);
                 }
-
             }, delay);
             return;
         }
@@ -1466,6 +1478,14 @@
         mWallpaperOffset.syncWithScroll();
     }
 
+    @Override
+    public void announceForAccessibility(CharSequence text) {
+        // Don't announce if apps is on top of us.
+        if (!mLauncher.isAllAppsVisible()) {
+            super.announceForAccessibility(text);
+        }
+    }
+
     void showOutlines() {
         if (!isSmall() && !mIsSwitchingState) {
             if (mChildrenOutlineFadeOutAnimation != null) mChildrenOutlineFadeOutAnimation.cancel();
@@ -3046,13 +3066,11 @@
                 // cell also contains a shortcut, then create a folder with the two shortcuts.
                 if (!mInScrollArea && createUserFolderIfNecessary(cell, container,
                         dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) {
-                    removeExtraEmptyScreen(true, null, 0, true);
                     return;
                 }
 
                 if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell,
                         distance, d, false)) {
-                    removeExtraEmptyScreen(true, null, 0, true);
                     return;
                 }
 
@@ -3158,7 +3176,6 @@
                     if (finalResizeRunnable != null) {
                         finalResizeRunnable.run();
                     }
-                    removeExtraEmptyScreen(true, null, 0, true);
                 }
             };
             mAnimatingViewIntoPlace = true;
@@ -3812,13 +3829,8 @@
         final Runnable exitSpringLoadedRunnable = new Runnable() {
             @Override
             public void run() {
-                removeExtraEmptyScreen(false, new Runnable() {
-                    @Override
-                    public void run() {
-                        mLauncher.exitSpringLoadedDragModeDelayed(true,
-                                Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
-                    }
-                });
+                mLauncher.exitSpringLoadedDragModeDelayed(true,
+                        Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
             }
         };
 
@@ -3880,6 +3892,11 @@
             Runnable onAnimationCompleteRunnable = new Runnable() {
                 @Override
                 public void run() {
+                    // Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when
+                    // adding an item that may not be dropped right away (due to a config activity)
+                    // we defer the removal until the activity returns.
+                    deferRemoveExtraEmptyScreen();
+
                     // When dragging and dropping from customization tray, we deal with creating
                     // widgets/shortcuts/folders in a slightly different way
                     switch (pendingInfo.itemType) {
@@ -4180,10 +4197,6 @@
                 if (mDragInfo.cell instanceof DropTarget) {
                     mDragController.removeDropTarget((DropTarget) mDragInfo.cell);
                 }
-                // If we move the item to anything not on the Workspace, check if any empty
-                // screens need to be removed. If we dropped back on the workspace, this will
-                // be done post drop animation.
-                removeExtraEmptyScreen(true, null, 0, true);
             }
         } else if (mDragInfo != null) {
             CellLayout cellLayout;
@@ -4613,7 +4626,7 @@
     // Removes ALL items that match a given package name, this is usually called when a package
     // has been removed and we want to remove all components (widgets, shortcuts, apps) that
     // belong to that package.
-    void removeItemsByPackageName(final ArrayList<String> packages) {
+    void removeItemsByPackageName(final ArrayList<String> packages, final UserHandleCompat user) {
         final HashSet<String> packageNames = new HashSet<String>();
         packageNames.addAll(packages);
 
@@ -4633,7 +4646,8 @@
             @Override
             public boolean filterItem(ItemInfo parent, ItemInfo info,
                                       ComponentName cn) {
-                if (packageNames.contains(cn.getPackageName())) {
+                if (packageNames.contains(cn.getPackageName())
+                        && info.user.equals(user)) {
                     cns.add(cn);
                     return true;
                 }
@@ -4643,13 +4657,13 @@
         LauncherModel.filterItemInfos(infos, filter);
 
         // Remove the affected components
-        removeItemsByComponentName(cns);
+        removeItemsByComponentName(cns, user);
     }
 
     // Removes items that match the application info specified, when applications are removed
     // as a part of an update, this is called to ensure that other widgets and application
     // shortcuts are not removed.
-    void removeItemsByApplicationInfo(final ArrayList<AppInfo> appInfos) {
+    void removeItemsByApplicationInfo(final ArrayList<AppInfo> appInfos, UserHandleCompat user) {
         // Just create a hash table of all the specific components that this will affect
         HashSet<ComponentName> cns = new HashSet<ComponentName>();
         for (AppInfo info : appInfos) {
@@ -4657,10 +4671,11 @@
         }
 
         // Remove all the things
-        removeItemsByComponentName(cns);
+        removeItemsByComponentName(cns, user);
     }
 
-    void removeItemsByComponentName(final HashSet<ComponentName> componentNames) {
+    void removeItemsByComponentName(final HashSet<ComponentName> componentNames,
+            final UserHandleCompat user) {
         ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts();
         for (final CellLayout layoutParent: cellLayouts) {
             final ViewGroup layout = layoutParent.getShortcutsAndWidgets();
@@ -4679,7 +4694,7 @@
                 public boolean filterItem(ItemInfo parent, ItemInfo info,
                                           ComponentName cn) {
                     if (parent instanceof FolderInfo) {
-                        if (componentNames.contains(cn)) {
+                        if (componentNames.contains(cn) && info.user.equals(user)) {
                             FolderInfo folder = (FolderInfo) parent;
                             ArrayList<ShortcutInfo> appsToRemove;
                             if (folderAppsToRemove.containsKey(folder)) {
@@ -4692,7 +4707,7 @@
                             return true;
                         }
                     } else {
-                        if (componentNames.contains(cn)) {
+                        if (componentNames.contains(cn) && info.user.equals(user)) {
                             childrenToRemove.add(children.get(info));
                             return true;
                         }
diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java
new file mode 100644
index 0000000..3ba93ea
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompat.java
@@ -0,0 +1,34 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.graphics.drawable.Drawable;
+
+public abstract class LauncherActivityInfoCompat {
+
+    LauncherActivityInfoCompat() {
+    }
+
+    public abstract ComponentName getComponentName();
+    public abstract UserHandleCompat getUser();
+    public abstract CharSequence getLabel();
+    public abstract Drawable getIcon(int density);
+    public abstract int getApplicationFlags();
+    public abstract long getFirstInstallTime();
+    public abstract Drawable getBadgedIcon(int density);
+}
diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java
new file mode 100644
index 0000000..9b9384d
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompatV16.java
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageInfo;
+import android.content.pm.ResolveInfo;
+import android.content.res.Resources;
+import android.graphics.drawable.Drawable;
+
+
+public class LauncherActivityInfoCompatV16 extends LauncherActivityInfoCompat {
+    private ActivityInfo mActivityInfo;
+    private ComponentName mComponentName;
+    private PackageManager mPm;
+
+    LauncherActivityInfoCompatV16(Context context, ResolveInfo info) {
+        super();
+        this.mActivityInfo = info.activityInfo;
+        mComponentName = new ComponentName(mActivityInfo.packageName, mActivityInfo.name);
+        mPm = context.getPackageManager();
+    }
+
+    public ComponentName getComponentName() {
+        return mComponentName;
+    }
+
+    public UserHandleCompat getUser() {
+        return UserHandleCompat.myUserHandle();
+    }
+
+    public CharSequence getLabel() {
+        return mActivityInfo.loadLabel(mPm);
+    }
+
+    public Drawable getIcon(int density) {
+        Drawable d = null;
+        if (mActivityInfo.getIconResource() != 0) {
+            Resources resources;
+            try {
+                resources = mPm.getResourcesForApplication(mActivityInfo.packageName);
+            } catch (PackageManager.NameNotFoundException e) {
+                resources = null;
+            }
+            if (resources != null) {
+                d = resources.getDrawableForDensity(mActivityInfo.getIconResource(), density);
+            }
+        }
+        if (d == null) {
+            Resources resources = Resources.getSystem();
+            d = resources.getDrawableForDensity(android.R.mipmap.sym_def_app_icon, density);
+        }
+        return d;
+    }
+
+    public int getApplicationFlags() {
+        return mActivityInfo.applicationInfo.flags;
+    }
+
+    public long getFirstInstallTime() {
+        try {
+            PackageInfo info = mPm.getPackageInfo(mActivityInfo.packageName, 0);
+            return info != null ? info.firstInstallTime : 0;
+        } catch (NameNotFoundException e) {
+            return 0;
+        }
+    }
+
+    public String getName() {
+        return mActivityInfo.name;
+    }
+
+    public Drawable getBadgedIcon(int density) {
+        return getIcon(density);
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java b/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java
new file mode 100644
index 0000000..76125bd
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherActivityInfoCompatVL.java
@@ -0,0 +1,82 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class LauncherActivityInfoCompatVL extends LauncherActivityInfoCompat {
+    private Object mLauncherActivityInfo;
+    private Class mLauncherActivityInfoClass;
+    private Method mGetComponentName;
+    private Method mGetUser;
+    private Method mGetLabel;
+    private Method mGetIcon;
+    private Method mGetApplicationFlags;
+    private Method mGetFirstInstallTime;
+    private Method mGetBadgedIcon;
+
+    LauncherActivityInfoCompatVL(Object launcherActivityInfo) {
+        super();
+        mLauncherActivityInfo = launcherActivityInfo;
+        mLauncherActivityInfoClass = ReflectUtils.getClassForName(
+                "android.content.pm.LauncherActivityInfo");
+        mGetComponentName = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getComponentName");
+        mGetUser = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getUser");
+        mGetLabel = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getLabel");
+        mGetIcon = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getIcon", int.class);
+        mGetApplicationFlags = ReflectUtils.getMethod(mLauncherActivityInfoClass,
+                "getApplicationFlags");
+        mGetFirstInstallTime = ReflectUtils.getMethod(mLauncherActivityInfoClass,
+                "getFirstInstallTime");
+        mGetBadgedIcon = ReflectUtils.getMethod(mLauncherActivityInfoClass, "getBadgedIcon",
+                int.class);
+    }
+
+    public ComponentName getComponentName() {
+        return (ComponentName) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetComponentName);
+    }
+
+    public UserHandleCompat getUser() {
+        return UserHandleCompat.fromUser((UserHandle) ReflectUtils.invokeMethod(
+                        mLauncherActivityInfo, mGetUser));
+    }
+
+    public CharSequence getLabel() {
+        return (CharSequence) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetLabel);
+    }
+
+    public Drawable getIcon(int density) {
+        return (Drawable) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetIcon, density);
+    }
+
+    public int getApplicationFlags() {
+        return (Integer) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetApplicationFlags);
+    }
+
+    public long getFirstInstallTime() {
+        return (Long) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetFirstInstallTime);
+    }
+
+    public Drawable getBadgedIcon(int density) {
+        return (Drawable) ReflectUtils.invokeMethod(mLauncherActivityInfo, mGetBadgedIcon, density);
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompat.java b/src/com/android/launcher3/compat/LauncherAppsCompat.java
new file mode 100644
index 0000000..069e3de
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompat.java
@@ -0,0 +1,79 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public abstract class LauncherAppsCompat {
+
+    public static final String ACTION_MANAGED_PROFILE_ADDED =
+            "android.intent.action.MANAGED_PROFILE_ADDED";
+    public static final String ACTION_MANAGED_PROFILE_REMOVED =
+            "android.intent.action.MANAGED_PROFILE_REMOVED";
+
+    public interface OnAppsChangedListenerCompat {
+        void onPackageRemoved(UserHandleCompat user, String packageName);
+        void onPackageAdded(UserHandleCompat user, String packageName);
+        void onPackageChanged(UserHandleCompat user, String packageName);
+        void onPackagesAvailable(UserHandleCompat user, String[] packageNames, boolean replacing);
+        void onPackagesUnavailable(UserHandleCompat user, String[] packageNames, boolean replacing);
+    }
+
+    protected LauncherAppsCompat() {
+    }
+
+    public static LauncherAppsCompat getInstance(Context context) {
+        // TODO change this to use api version once L gets an API number.
+        if ("L".equals(Build.VERSION.CODENAME)) {
+            Object launcherApps = context.getSystemService("launcherapps");
+            if (launcherApps != null) {
+                LauncherAppsCompatVL compat = LauncherAppsCompatVL.build(context, launcherApps);
+                if (compat != null) {
+                    return compat;
+                }
+            }
+        }
+        // Pre L or lunacher apps service not running, or reflection failed to find something.
+        return new LauncherAppsCompatV16(context);
+    }
+
+    public abstract List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user);
+    public abstract LauncherActivityInfoCompat resolveActivity(Intent intent,
+            UserHandleCompat user);
+    public abstract void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user);
+    public abstract void addOnAppsChangedListener(OnAppsChangedListenerCompat listener);
+    public abstract void removeOnAppsChangedListener(OnAppsChangedListenerCompat listener);
+    public abstract boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user);
+    public abstract boolean isActivityEnabledForProfile(ComponentName component,
+            UserHandleCompat user);
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatV16.java b/src/com/android/launcher3/compat/LauncherAppsCompatV16.java
new file mode 100644
index 0000000..c739eb9
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatV16.java
@@ -0,0 +1,191 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.BroadcastReceiver;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.IntentFilter;
+import android.content.pm.ActivityInfo;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.PackageInfo;
+import android.content.pm.ResolveInfo;
+import android.graphics.Rect;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class LauncherAppsCompatV16 extends LauncherAppsCompat {
+
+    private PackageManager mPm;
+    private Context mContext;
+    private List<OnAppsChangedListenerCompat> mListeners
+            = new ArrayList<OnAppsChangedListenerCompat>();
+    private PackageMonitor mPackageMonitor;
+
+    LauncherAppsCompatV16(Context context) {
+        mPm = context.getPackageManager();
+        mContext = context;
+        mPackageMonitor = new PackageMonitor();
+   }
+
+    public List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user) {
+        final Intent mainIntent = new Intent(Intent.ACTION_MAIN, null);
+        mainIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+        mainIntent.setPackage(packageName);
+        List<ResolveInfo> infos = mPm.queryIntentActivities(mainIntent, 0);
+        List<LauncherActivityInfoCompat> list =
+                new ArrayList<LauncherActivityInfoCompat>(infos.size());
+        for (ResolveInfo info : infos) {
+            list.add(new LauncherActivityInfoCompatV16(mContext, info));
+        }
+        return list;
+    }
+
+    public LauncherActivityInfoCompat resolveActivity(Intent intent, UserHandleCompat user) {
+        ResolveInfo info = mPm.resolveActivity(intent, 0);
+        if (info != null) {
+            return new LauncherActivityInfoCompatV16(mContext, info);
+        }
+        return null;
+    }
+
+    public void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user) {
+        Intent launchIntent = new Intent(Intent.ACTION_MAIN);
+        launchIntent.addCategory(Intent.CATEGORY_LAUNCHER);
+        launchIntent.setComponent(component);
+        launchIntent.setSourceBounds(sourceBounds);
+        launchIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
+        mContext.startActivity(launchIntent, opts);
+    }
+
+    public synchronized void addOnAppsChangedListener(OnAppsChangedListenerCompat listener) {
+        if (listener != null && !mListeners.contains(listener)) {
+            mListeners.add(listener);
+            if (mListeners.size() == 1) {
+                registerForPackageIntents();
+            }
+        }
+    }
+
+    public synchronized void removeOnAppsChangedListener(OnAppsChangedListenerCompat listener) {
+        mListeners.remove(listener);
+        if (mListeners.size() == 0) {
+            unregisterForPackageIntents();
+        }
+    }
+
+    public boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user) {
+        try {
+            PackageInfo info = mPm.getPackageInfo(packageName, 0);
+            return info != null && info.applicationInfo.enabled;
+        } catch (NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    public boolean isActivityEnabledForProfile(ComponentName component, UserHandleCompat user) {
+        try {
+            ActivityInfo info = mPm.getActivityInfo(component, 0);
+            return info != null && info.isEnabled();
+        } catch (NameNotFoundException e) {
+            return false;
+        }
+    }
+
+    private void unregisterForPackageIntents() {
+        mContext.unregisterReceiver(mPackageMonitor);
+    }
+
+    private void registerForPackageIntents() {
+        IntentFilter filter = new IntentFilter(Intent.ACTION_PACKAGE_ADDED);
+        filter.addAction(Intent.ACTION_PACKAGE_REMOVED);
+        filter.addAction(Intent.ACTION_PACKAGE_CHANGED);
+        filter.addDataScheme("package");
+        mContext.registerReceiver(mPackageMonitor, filter);
+        filter = new IntentFilter();
+        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE);
+        filter.addAction(Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE);
+        mContext.registerReceiver(mPackageMonitor, filter);
+    }
+
+    private synchronized List<OnAppsChangedListenerCompat> getListeners() {
+        return new ArrayList<OnAppsChangedListenerCompat>(mListeners);
+    }
+
+    private class PackageMonitor extends BroadcastReceiver {
+        public void onReceive(Context context, Intent intent) {
+            final String action = intent.getAction();
+            final UserHandleCompat user = UserHandleCompat.myUserHandle();
+
+            if (Intent.ACTION_PACKAGE_CHANGED.equals(action)
+                    || Intent.ACTION_PACKAGE_REMOVED.equals(action)
+                    || Intent.ACTION_PACKAGE_ADDED.equals(action)) {
+                final String packageName = intent.getData().getSchemeSpecificPart();
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+
+                if (packageName == null || packageName.length() == 0) {
+                    // they sent us a bad intent
+                    return;
+                }
+                if (Intent.ACTION_PACKAGE_CHANGED.equals(action)) {
+                    for (OnAppsChangedListenerCompat listener : getListeners()) {
+                        listener.onPackageChanged(user, packageName);
+                    }
+                } else if (Intent.ACTION_PACKAGE_REMOVED.equals(action)) {
+                    if (!replacing) {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageRemoved(user, packageName);
+                        }
+                    }
+                    // else, we are replacing the package, so a PACKAGE_ADDED will be sent
+                    // later, we will update the package at this time
+                } else if (Intent.ACTION_PACKAGE_ADDED.equals(action)) {
+                    if (!replacing) {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageAdded(user, packageName);
+                        }
+                    } else {
+                        for (OnAppsChangedListenerCompat listener : getListeners()) {
+                            listener.onPackageChanged(user, packageName);
+                        }
+                    }
+                }
+            } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_AVAILABLE.equals(action)) {
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+                String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
+                for (OnAppsChangedListenerCompat listener : getListeners()) {
+                    listener.onPackagesAvailable(user, packages, replacing);
+                }
+            } else if (Intent.ACTION_EXTERNAL_APPLICATIONS_UNAVAILABLE.equals(action)) {
+                final boolean replacing = intent.getBooleanExtra(Intent.EXTRA_REPLACING, false);
+                String[] packages = intent.getStringArrayExtra(Intent.EXTRA_CHANGED_PACKAGE_LIST);
+                for (OnAppsChangedListenerCompat listener : getListeners()) {
+                    listener.onPackagesUnavailable(user, packages, replacing);
+                }
+            }
+        }
+    }
+}
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
new file mode 100644
index 0000000..21f2659
--- /dev/null
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
@@ -0,0 +1,209 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Rect;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.UserHandle;
+
+import java.lang.reflect.InvocationHandler;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import java.lang.reflect.Proxy;
+import java.lang.reflect.Method;
+
+public class LauncherAppsCompatVL extends LauncherAppsCompat {
+
+    private Object mLauncherApps;
+    private Class mLauncherAppsClass;
+    private Class mListenerClass;
+    private Method mGetActivityList;
+    private Method mResolveActivity;
+    private Method mStartActivityForProfile;
+    private Method mAddOnAppsChangedListener;
+    private Method mRemoveOnAppsChangedListener;
+    private Method mIsPackageEnabledForProfile;
+    private Method mIsActivityEnabledForProfile;
+
+    private Map<OnAppsChangedListenerCompat, Object> mListeners
+            = new HashMap<OnAppsChangedListenerCompat, Object>();
+
+    static LauncherAppsCompatVL build(Context context, Object launcherApps) {
+        LauncherAppsCompatVL compat = new LauncherAppsCompatVL(context, launcherApps);
+
+        compat.mListenerClass = ReflectUtils.getClassForName(
+                "android.content.pm.LauncherApps$OnAppsChangedListener");
+        compat.mLauncherAppsClass = ReflectUtils.getClassForName("android.content.pm.LauncherApps");
+
+        compat.mGetActivityList = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "getActivityList",
+                String.class, UserHandle.class);
+        compat.mResolveActivity = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "resolveActivity",
+                Intent.class, UserHandle.class);
+        compat.mStartActivityForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "startActivityForProfile",
+                ComponentName.class, Rect.class, Bundle.class, UserHandle.class);
+        compat.mAddOnAppsChangedListener = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "addOnAppsChangedListener", compat.mListenerClass);
+        compat.mRemoveOnAppsChangedListener = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "removeOnAppsChangedListener", compat.mListenerClass);
+        compat.mIsPackageEnabledForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "isPackageEnabledForProfile", String.class, UserHandle.class);
+        compat.mIsActivityEnabledForProfile = ReflectUtils.getMethod(compat.mLauncherAppsClass,
+                "isActivityEnabledForProfile", ComponentName.class, UserHandle.class);
+
+        if (compat.mListenerClass != null
+                && compat.mLauncherAppsClass != null
+                && compat.mGetActivityList != null
+                && compat.mResolveActivity != null
+                && compat.mStartActivityForProfile != null
+                && compat.mAddOnAppsChangedListener != null
+                && compat.mRemoveOnAppsChangedListener != null
+                && compat.mIsPackageEnabledForProfile != null
+                && compat.mIsActivityEnabledForProfile != null) {
+            return compat;
+        }
+        return null;
+    }
+
+    private LauncherAppsCompatVL(Context context, Object launcherApps) {
+        super();
+        mLauncherApps = launcherApps;
+    }
+
+    public List<LauncherActivityInfoCompat> getActivityList(String packageName,
+            UserHandleCompat user) {
+        List<Object> list = (List<Object>) ReflectUtils.invokeMethod(mLauncherApps,
+                mGetActivityList, packageName, user.getUser());
+        if (list.size() == 0) {
+            return Collections.EMPTY_LIST;
+        }
+        ArrayList<LauncherActivityInfoCompat> compatList =
+                new ArrayList<LauncherActivityInfoCompat>(list.size());
+        for (Object info : list) {
+            compatList.add(new LauncherActivityInfoCompatVL(info));
+        }
+        return compatList;
+    }
+
+    public LauncherActivityInfoCompat resolveActivity(Intent intent, UserHandleCompat user) {
+        Object activity = ReflectUtils.invokeMethod(mLauncherApps, mResolveActivity,
+                        intent, user.getUser());
+        if (activity != null) {
+            return new LauncherActivityInfoCompatVL(activity);
+        } else {
+            return null;
+        }
+    }
+
+    public void startActivityForProfile(ComponentName component, Rect sourceBounds,
+            Bundle opts, UserHandleCompat user) {
+        ReflectUtils.invokeMethod(mLauncherApps, mStartActivityForProfile,
+                component, sourceBounds, opts, user.getUser());
+    }
+
+    public void addOnAppsChangedListener(LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+        Object wrappedListener = Proxy.newProxyInstance(mListenerClass.getClassLoader(),
+                new Class[]{mListenerClass}, new WrappedListener(listener));
+        synchronized (mListeners) {
+            mListeners.put(listener, wrappedListener);
+        }
+        ReflectUtils.invokeMethod(mLauncherApps, mAddOnAppsChangedListener, wrappedListener);
+    }
+
+    public void removeOnAppsChangedListener(
+            LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+        Object wrappedListener = null;
+        synchronized (mListeners) {
+            wrappedListener = mListeners.remove(listener);
+        }
+        if (wrappedListener != null) {
+            ReflectUtils.invokeMethod(mLauncherApps, mRemoveOnAppsChangedListener, wrappedListener);
+        }
+    }
+
+    public boolean isPackageEnabledForProfile(String packageName, UserHandleCompat user) {
+        return (Boolean) ReflectUtils.invokeMethod(mLauncherApps, mIsPackageEnabledForProfile,
+                packageName, user.getUser());
+    }
+
+    public boolean isActivityEnabledForProfile(ComponentName component, UserHandleCompat user) {
+        return (Boolean) ReflectUtils.invokeMethod(mLauncherApps, mIsActivityEnabledForProfile,
+                component, user.getUser());
+    }
+
+    private static class WrappedListener implements InvocationHandler {
+        private LauncherAppsCompat.OnAppsChangedListenerCompat mListener;
+
+        public WrappedListener(LauncherAppsCompat.OnAppsChangedListenerCompat listener) {
+            mListener = listener;
+        }
+
+        public Object invoke(Object proxy, Method m, Object[] args) throws Throwable {
+            try {
+                String methodName = m.getName();
+                if ("onPackageRemoved".equals(methodName)) {
+                    onPackageRemoved((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackageAdded".equals(methodName)) {
+                    onPackageAdded((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackageChanged".equals(methodName)) {
+                    onPackageChanged((UserHandle) args[0], (String) args[1]);
+                } else if ("onPackagesAvailable".equals(methodName)) {
+                    onPackagesAvailable((UserHandle) args[0], (String []) args[1],
+                            (Boolean) args[2]);
+                } else if ("onPackagesUnavailable".equals(methodName)) {
+                    onPackagesUnavailable((UserHandle) args[0], (String []) args[1],
+                            (Boolean) args[2]);
+                }
+            } finally {
+                return null;
+            }
+        }
+
+        public void onPackageRemoved(UserHandle user, String packageName) {
+            mListener.onPackageRemoved(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackageAdded(UserHandle user, String packageName) {
+            mListener.onPackageAdded(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackageChanged(UserHandle user, String packageName) {
+            mListener.onPackageChanged(UserHandleCompat.fromUser(user), packageName);
+        }
+
+        public void onPackagesAvailable(UserHandle user, String[] packageNames, boolean replacing) {
+            mListener.onPackagesAvailable(UserHandleCompat.fromUser(user), packageNames, replacing);
+        }
+
+        public void onPackagesUnavailable(UserHandle user, String[] packageNames,
+                boolean replacing) {
+            mListener.onPackagesUnavailable(UserHandleCompat.fromUser(user), packageNames,
+                    replacing);
+        }
+    }
+}
+
diff --git a/src/com/android/launcher3/compat/ReflectUtils.java b/src/com/android/launcher3/compat/ReflectUtils.java
new file mode 100644
index 0000000..e1b8a1f
--- /dev/null
+++ b/src/com/android/launcher3/compat/ReflectUtils.java
@@ -0,0 +1,159 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.util.Log;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class ReflectUtils {
+    private static final String TAG = "LauncherReflect";
+
+    public static Class getClassForName(String className) {
+        try {
+            return Class.forName(className);
+        } catch (ClassNotFoundException e) {
+            Log.e(TAG, "Couldn't find class " + className, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method) {
+        try {
+            return clazz.getMethod(method);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1) {
+        try {
+            return clazz.getMethod(method, param1);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2) {
+        try {
+            return clazz.getMethod(method, param1, param2);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2,
+            Class param3) {
+        try {
+            return clazz.getMethod(method, param1, param2, param3);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Method getMethod(Class clazz, String method, Class param1, Class param2,
+            Class param3, Class param4) {
+        try {
+            return clazz.getMethod(method, param1, param2, param3, param4);
+        } catch (NoSuchMethodException e) {
+            Log.e(TAG, "Couldn't find methid " + clazz.getName() + " " + method, e);
+            return null;
+        }
+    }
+
+    public static Object invokeMethod(Object object, Method method) {
+        try {
+            return method.invoke(object);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1) {
+        try {
+            return method.invoke(object, param1);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2) {
+        try {
+            return method.invoke(object, param1, param2);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2,
+            Object param3) {
+        try {
+            return method.invoke(object, param1, param2, param3);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+
+    public static Object invokeMethod(Object object, Method method, Object param1, Object param2,
+            Object param3, Object param4) {
+        try {
+            return method.invoke(object, param1, param2, param3, param4);
+        } catch (SecurityException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalArgumentException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (IllegalAccessException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        } catch (InvocationTargetException e) {
+            Log.e(TAG, "Couldn't invoke method " + method, e);
+        }
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/UserHandleCompat.java b/src/com/android/launcher3/compat/UserHandleCompat.java
new file mode 100644
index 0000000..8f5dda2
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserHandleCompat.java
@@ -0,0 +1,81 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.os.Build;
+import android.os.UserHandle;
+
+public class UserHandleCompat {
+    private UserHandle mUser;
+
+    private UserHandleCompat(UserHandle user) {
+        mUser = user;
+    }
+
+    private UserHandleCompat() {
+    }
+
+    public static UserHandleCompat myUserHandle() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return new UserHandleCompat(android.os.Process.myUserHandle());
+        } else {
+            return new UserHandleCompat();
+        }
+    }
+
+    static UserHandleCompat fromUser(UserHandle user) {
+        if (user == null) {
+            return null;
+        } else {
+            return new UserHandleCompat(user);
+        }
+    }
+
+    UserHandle getUser() {
+        return mUser;
+    }
+
+    @Override
+    public String toString() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.toString();
+        } else {
+            return "";
+        }
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (!(other instanceof UserHandleCompat)) {
+            return false;
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.equals(((UserHandleCompat) other).mUser);
+        } else {
+            return true;
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return mUser.hashCode();
+        } else {
+            return 0;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/com/android/launcher3/compat/UserManagerCompat.java b/src/com/android/launcher3/compat/UserManagerCompat.java
new file mode 100644
index 0000000..256e04a
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompat.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.Build;
+
+import java.util.List;
+
+public abstract class UserManagerCompat {
+    protected UserManagerCompat() {
+    }
+
+    public static UserManagerCompat getInstance(Context context) {
+        // TODO change this to use api version once L gets an API number.
+        if ("L".equals(Build.VERSION.CODENAME)) {
+            return new UserManagerCompatVL(context);
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            return new UserManagerCompatV17(context);
+        } else {
+            return new UserManagerCompatV16();
+        }
+    }
+
+    public abstract List<UserHandleCompat> getUserProfiles();
+    public abstract long getSerialNumberForUser(UserHandleCompat user);
+    public abstract UserHandleCompat getUserForSerialNumber(long serialNumber);
+    public abstract Drawable getBadgedDrawableForUser(Drawable unbadged, UserHandleCompat user);
+}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatV16.java b/src/com/android/launcher3/compat/UserManagerCompatV16.java
new file mode 100644
index 0000000..2009e4e
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatV16.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.graphics.drawable.Drawable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatV16 extends UserManagerCompat {
+
+    UserManagerCompatV16() {
+    }
+
+    public List<UserHandleCompat> getUserProfiles() {
+        List<UserHandleCompat> profiles = new ArrayList<UserHandleCompat>(1);
+        profiles.add(UserHandleCompat.myUserHandle());
+        return profiles;
+    }
+
+    public UserHandleCompat getUserForSerialNumber(long serialNumber) {
+        return UserHandleCompat.myUserHandle();
+    }
+
+    public Drawable getBadgedDrawableForUser(Drawable unbadged,
+            UserHandleCompat user) {
+        return unbadged;
+    }
+
+    public long getSerialNumberForUser(UserHandleCompat user) {
+        return 0;
+    }
+}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatV17.java b/src/com/android/launcher3/compat/UserManagerCompatV17.java
new file mode 100644
index 0000000..055359a
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatV17.java
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatV17 extends UserManagerCompatV16 {
+    protected UserManager mUserManager;
+
+    UserManagerCompatV17(Context context) {
+        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
+    }
+
+    public long getSerialNumberForUser(UserHandleCompat user) {
+        return mUserManager.getSerialNumberForUser(user.getUser());
+    }
+
+    public UserHandleCompat getUserForSerialNumber(long serialNumber) {
+        return UserHandleCompat.fromUser(mUserManager.getUserForSerialNumber(serialNumber));
+    }
+}
+
diff --git a/src/com/android/launcher3/compat/UserManagerCompatVL.java b/src/com/android/launcher3/compat/UserManagerCompatVL.java
new file mode 100644
index 0000000..8d3ca85
--- /dev/null
+++ b/src/com/android/launcher3/compat/UserManagerCompatVL.java
@@ -0,0 +1,68 @@
+
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.launcher3.compat;
+
+import android.content.Context;
+import android.graphics.drawable.Drawable;
+import android.os.UserHandle;
+import android.os.UserManager;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+public class UserManagerCompatVL extends UserManagerCompatV17 {
+
+    UserManagerCompatVL(Context context) {
+        super(context);
+    }
+
+    public List<UserHandleCompat> getUserProfiles() {
+        Method method = ReflectUtils.getMethod(mUserManager.getClass(), "getUserProfiles");
+        if (method != null) {
+            List<UserHandle> users = (List<UserHandle>) ReflectUtils.invokeMethod(
+                    mUserManager, method);
+            if (users != null) {
+                ArrayList<UserHandleCompat> compatUsers = new ArrayList<UserHandleCompat>(
+                        users.size());
+                for (UserHandle user : users) {
+                    compatUsers.add(UserHandleCompat.fromUser(user));
+                }
+                return compatUsers;
+            }
+        }
+        // Fall back to non L version.
+        return super.getUserProfiles();
+    }
+
+    public Drawable getBadgedDrawableForUser(Drawable unbadged, UserHandleCompat user) {
+        Method method = ReflectUtils.getMethod(mUserManager.getClass(), "getBadgedDrawableForUser",
+                Drawable.class, UserHandle.class);
+        if (method != null) {
+            Drawable d = (Drawable) ReflectUtils.invokeMethod(mUserManager, method, unbadged,
+                    user.getUser());
+            if (d != null) {
+                return d;
+            }
+        }
+        // Fall back to non L version.
+        return super.getBadgedDrawableForUser(unbadged, user);
+    }
+}
+