diff --git a/build.gradle b/build.gradle
index ef782d9..c23a299 100644
--- a/build.gradle
+++ b/build.gradle
@@ -68,6 +68,7 @@
 final String SUPPORT_LIBS_VERSION = '26.0.0-SNAPSHOT'
 dependencies {
     compile "com.android.support:support-v4:${SUPPORT_LIBS_VERSION}"
+    compile "com.android.support:support-dynamic-animation:${SUPPORT_LIBS_VERSION}"
     compile "com.android.support:recyclerview-v7:${SUPPORT_LIBS_VERSION}"
     compile "com.android.support:palette-v7:${SUPPORT_LIBS_VERSION}"
     compile 'com.google.protobuf.nano:protobuf-javanano:3.0.0-alpha-2'
diff --git a/src/com/android/launcher3/compat/UserManagerCompatVL.java b/src/com/android/launcher3/compat/UserManagerCompatVL.java
index c7f88f6..bb42573 100644
--- a/src/com/android/launcher3/compat/UserManagerCompatVL.java
+++ b/src/com/android/launcher3/compat/UserManagerCompatVL.java
@@ -21,13 +21,11 @@
 import android.content.pm.PackageManager;
 import android.os.UserHandle;
 import android.os.UserManager;
-
+import android.util.ArrayMap;
 import com.android.launcher3.util.LongArrayMap;
 import com.android.launcher3.util.ManagedProfileHeuristic;
-
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.HashMap;
 import java.util.List;
 
 public class UserManagerCompatVL extends UserManagerCompat {
@@ -40,7 +38,7 @@
     protected LongArrayMap<UserHandle> mUsers;
     // Create a separate reverse map as LongArrayMap.indexOfValue checks if objects are same
     // and not {@link Object#equals}
-    protected HashMap<UserHandle, Long> mUserToSerialMap;
+    protected ArrayMap<UserHandle, Long> mUserToSerialMap;
 
     UserManagerCompatVL(Context context) {
         mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
@@ -88,7 +86,7 @@
     public void enableAndResetCache() {
         synchronized (this) {
             mUsers = new LongArrayMap<>();
-            mUserToSerialMap = new HashMap<>();
+            mUserToSerialMap = new ArrayMap<>();
             List<UserHandle> users = mUserManager.getUserProfiles();
             if (users != null) {
                 for (UserHandle user : users) {
diff --git a/src/com/android/launcher3/graphics/PreloadIconDrawable.java b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
index 22ce098..39cd401 100644
--- a/src/com/android/launcher3/graphics/PreloadIconDrawable.java
+++ b/src/com/android/launcher3/graphics/PreloadIconDrawable.java
@@ -121,11 +121,11 @@
     protected void onBoundsChange(Rect bounds) {
         super.onBoundsChange(bounds);
         mTmpMatrix.setScale(
-                (bounds.width() - PROGRESS_WIDTH - 2 * PROGRESS_GAP) / PATH_SIZE,
-                (bounds.height() - PROGRESS_WIDTH - 2 * PROGRESS_GAP) / PATH_SIZE);
+                (bounds.width() - 2 * PROGRESS_WIDTH - 2 * PROGRESS_GAP) / PATH_SIZE,
+                (bounds.height() - 2 * PROGRESS_WIDTH - 2 * PROGRESS_GAP) / PATH_SIZE);
         mTmpMatrix.postTranslate(
-                bounds.left + PROGRESS_WIDTH / 2 + PROGRESS_GAP,
-                bounds.top + PROGRESS_WIDTH / 2 + PROGRESS_GAP);
+                bounds.left + PROGRESS_WIDTH + PROGRESS_GAP,
+                bounds.top + PROGRESS_WIDTH + PROGRESS_GAP);
 
         mProgressPath.transform(mTmpMatrix, mScaledTrackPath);
         float scale = bounds.width() / PATH_SIZE;
diff --git a/src/com/android/launcher3/model/BgDataModel.java b/src/com/android/launcher3/model/BgDataModel.java
index d9c5143..816c1d4 100644
--- a/src/com/android/launcher3/model/BgDataModel.java
+++ b/src/com/android/launcher3/model/BgDataModel.java
@@ -152,7 +152,7 @@
             for (ArrayList<String> map : deepShortcutMap.values()) {
                 writer.print(prefix + "  ");
                 for (String str : map) {
-                    writer.print(str.toString() + ", ");
+                    writer.print(str + ", ");
                 }
                 writer.println();
             }
@@ -166,7 +166,7 @@
         DumpTargetWrapper hotseat = new DumpTargetWrapper(ContainerType.HOTSEAT, 0);
         LongArrayMap<DumpTargetWrapper> workspaces = new LongArrayMap<>();
         for (int i = 0; i < workspaceScreens.size(); i++) {
-            workspaces.put(new Long(workspaceScreens.get(i)),
+            workspaces.put(workspaceScreens.get(i),
                     new DumpTargetWrapper(ContainerType.WORKSPACE, i));
         }
         DumpTargetWrapper dtw;
@@ -183,7 +183,7 @@
             if (fInfo.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                 hotseat.add(dtw);
             } else if (fInfo.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
-                workspaces.get(new Long(fInfo.screenId)).add(dtw);
+                workspaces.get(fInfo.screenId).add(dtw);
             }
         }
         // Add leaf nodes (L3): *Info
@@ -197,7 +197,7 @@
             if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                 hotseat.add(dtw);
             } else if (info.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
-                workspaces.get(new Long(info.screenId)).add(dtw);
+                workspaces.get(info.screenId).add(dtw);
             }
         }
         for (int i = 0; i < appWidgets.size(); i++) {
@@ -207,7 +207,7 @@
             if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
                 hotseat.add(dtw);
             } else if (info.container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
-                workspaces.get(new Long(info.screenId)).add(dtw);
+                workspaces.get(info.screenId).add(dtw);
             }
         }