diff --git a/iconloaderlib/src/com/android/launcher3/icons/cache/BaseIconCache.java b/iconloaderlib/src/com/android/launcher3/icons/cache/BaseIconCache.java
index a886c0a..93f0538 100644
--- a/iconloaderlib/src/com/android/launcher3/icons/cache/BaseIconCache.java
+++ b/iconloaderlib/src/com/android/launcher3/icons/cache/BaseIconCache.java
@@ -374,7 +374,7 @@
      * Adds a default package entry in the cache. This entry is not persisted and will be removed
      * when the cache is flushed.
      */
-    public synchronized void cachePackageInstallInfo(String packageName, UserHandle user,
+    protected synchronized void cachePackageInstallInfo(String packageName, UserHandle user,
             Bitmap icon, CharSequence title) {
         removeFromMemCacheLocked(packageName, user);
 
diff --git a/robolectric_tests/src/com/android/launcher3/model/PackageInstallStateChangedTaskTest.java b/robolectric_tests/src/com/android/launcher3/model/PackageInstallStateChangedTaskTest.java
index 42a4f5c..a1a4561 100644
--- a/robolectric_tests/src/com/android/launcher3/model/PackageInstallStateChangedTaskTest.java
+++ b/robolectric_tests/src/com/android/launcher3/model/PackageInstallStateChangedTaskTest.java
@@ -5,8 +5,7 @@
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppWidgetInfo;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.PackageInstallerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
+import com.android.launcher3.pm.PackageInstallInfo;
 
 import org.junit.Before;
 import org.junit.Test;
@@ -28,7 +27,7 @@
     }
 
     private PackageInstallStateChangedTask newTask(String pkg, int progress) {
-        int state = PackageInstallerCompat.STATUS_INSTALLING;
+        int state = PackageInstallInfo.STATUS_INSTALLING;
         PackageInstallInfo installInfo = new PackageInstallInfo(pkg, state, progress,
                 android.os.Process.myUserHandle());
         return new PackageInstallStateChangedTask(installInfo);
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index db94bdb..efb3d36 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -17,6 +17,7 @@
 package com.android.launcher3;
 
 import static com.android.launcher3.InvariantDeviceProfile.CHANGE_FLAG_ICON_PARAMS;
+import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
 import static com.android.launcher3.util.SecureSettingsObserver.newNotificationSettingsObserver;
 
 import android.content.ComponentName;
@@ -28,12 +29,13 @@
 import android.util.Log;
 
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.notification.NotificationListener;
+import com.android.launcher3.pm.InstallSessionTracker;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.Preconditions;
 import com.android.launcher3.util.SecureSettingsObserver;
@@ -54,6 +56,8 @@
     private final InvariantDeviceProfile mInvariantDeviceProfile;
     private final SecureSettingsObserver mNotificationDotsObserver;
 
+    private final InstallSessionTracker mInstallSessionTracker;
+
     public static LauncherAppState getInstance(final Context context) {
         return INSTANCE.get(context);
     }
@@ -102,6 +106,9 @@
         mInvariantDeviceProfile.addOnChangeListener(this::onIdpChanged);
         new Handler().post( () -> mInvariantDeviceProfile.verifyConfigChangedInBackground(context));
 
+        mInstallSessionTracker = PackageInstallerCompat.getInstance(context)
+                .registerInstallTracker(mModel, MODEL_EXECUTOR);
+
         if (!mContext.getResources().getBoolean(R.bool.notification_dots_enabled)) {
             mNotificationDotsObserver = null;
         } else {
@@ -141,7 +148,7 @@
         mContext.unregisterReceiver(mModel);
         final LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(mContext);
         launcherApps.removeOnAppsChangedCallback(mModel);
-        PackageInstallerCompat.getInstance(mContext).onStop();
+        mInstallSessionTracker.unregister();
         if (mNotificationDotsObserver != null) {
             mNotificationDotsObserver.unregister();
         }
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index c0cf135..f360325 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -24,8 +24,8 @@
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
+import android.content.pm.PackageInstaller;
 import android.content.pm.ShortcutInfo;
-import android.os.Process;
 import android.os.UserHandle;
 import android.text.TextUtils;
 import android.util.Log;
@@ -34,8 +34,8 @@
 import androidx.annotation.Nullable;
 
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
 import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.logging.FileLog;
@@ -52,6 +52,8 @@
 import com.android.launcher3.model.PackageUpdatedTask;
 import com.android.launcher3.model.ShortcutsChangedTask;
 import com.android.launcher3.model.UserLockStateChangedTask;
+import com.android.launcher3.pm.InstallSessionTracker;
+import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
@@ -75,7 +77,7 @@
  * for the Launcher.
  */
 public class LauncherModel extends BroadcastReceiver
-        implements LauncherAppsCompat.OnAppsChangedCallbackCompat {
+        implements LauncherAppsCompat.OnAppsChangedCallbackCompat, InstallSessionTracker.Callback {
     private static final boolean DEBUG_RECEIVER = false;
 
     static final String TAG = "Launcher.Model";
@@ -127,20 +129,6 @@
         mBgAllAppsList = new AllAppsList(iconCache, appFilter);
     }
 
-    public void setPackageState(PackageInstallInfo installInfo) {
-        enqueueModelUpdateTask(new PackageInstallStateChangedTask(installInfo));
-    }
-
-    /**
-     * Updates the icons and label of all pending icons for the provided package name.
-     */
-    public void updateSessionDisplayInfo(final String packageName) {
-        HashSet<String> packages = new HashSet<>();
-        packages.add(packageName);
-        enqueueModelUpdateTask(new CacheDataUpdatedTask(
-                CacheDataUpdatedTask.OP_SESSION_UPDATE, Process.myUserHandle(), packages));
-    }
-
     /**
      * Adds the provided items to the workspace.
      */
@@ -173,30 +161,6 @@
         enqueueModelUpdateTask(new PackageUpdatedTask(op, user, packageName));
     }
 
-    public void onSessionFailure(String packageName, UserHandle user) {
-        enqueueModelUpdateTask(new BaseModelUpdateTask() {
-            @Override
-            public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
-                final IntSparseArrayMap<Boolean> removedIds = new IntSparseArrayMap<>();
-                synchronized (dataModel) {
-                    for (ItemInfo info : dataModel.itemsIdMap) {
-                        if (info instanceof WorkspaceItemInfo
-                                && ((WorkspaceItemInfo) info).hasPromiseIconUi()
-                                && user.equals(info.user)
-                                && info.getIntent() != null
-                                && TextUtils.equals(packageName, info.getIntent().getPackage())) {
-                            removedIds.put(info.id, true /* remove */);
-                        }
-                    }
-                }
-
-                if (!removedIds.isEmpty()) {
-                    deleteAndBindComponentsRemoved(ItemInfoMatcher.ofItemIds(removedIds, false));
-                }
-            }
-        });
-    }
-
     @Override
     public void onPackageRemoved(String packageName, UserHandle user) {
         onPackagesRemoved(user, packageName);
@@ -392,16 +356,65 @@
         }
     }
 
+    @Override
     public void onInstallSessionCreated(final PackageInstallInfo sessionInfo) {
+        if (FeatureFlags.PROMISE_APPS_IN_ALL_APPS.get()) {
+            enqueueModelUpdateTask(new BaseModelUpdateTask() {
+                @Override
+                public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
+                    apps.addPromiseApp(app.getContext(), sessionInfo);
+                    bindApplicationsIfNeeded();
+                }
+            });
+        }
+    }
+
+    @Override
+    public void onSessionFailure(String packageName, UserHandle user) {
+        if (!FeatureFlags.PROMISE_APPS_NEW_INSTALLS.get()) {
+            return;
+        }
         enqueueModelUpdateTask(new BaseModelUpdateTask() {
             @Override
             public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
-                apps.addPromiseApp(app.getContext(), sessionInfo);
-                bindApplicationsIfNeeded();
+                final IntSparseArrayMap<Boolean> removedIds = new IntSparseArrayMap<>();
+                synchronized (dataModel) {
+                    for (ItemInfo info : dataModel.itemsIdMap) {
+                        if (info instanceof WorkspaceItemInfo
+                                && ((WorkspaceItemInfo) info).hasPromiseIconUi()
+                                && user.equals(info.user)
+                                && info.getIntent() != null
+                                && TextUtils.equals(packageName, info.getIntent().getPackage())) {
+                            removedIds.put(info.id, true /* remove */);
+                        }
+                    }
+                }
+
+                if (!removedIds.isEmpty()) {
+                    deleteAndBindComponentsRemoved(ItemInfoMatcher.ofItemIds(removedIds, false));
+                }
             }
         });
     }
 
+    @Override
+    public void onPackageStateChanged(PackageInstallInfo installInfo) {
+        enqueueModelUpdateTask(new PackageInstallStateChangedTask(installInfo));
+    }
+
+    /**
+     * Updates the icons and label of all pending icons for the provided package name.
+     */
+    @Override
+    public void onUpdateSessionDisplay(PackageUserKey key, PackageInstaller.SessionInfo info) {
+        mApp.getIconCache().updateSessionCache(key, info);
+
+        HashSet<String> packages = new HashSet<>();
+        packages.add(key.mPackageName);
+        enqueueModelUpdateTask(new CacheDataUpdatedTask(
+                CacheDataUpdatedTask.OP_SESSION_UPDATE, key.mUser, packages));
+    }
+
     public class LoaderTransaction implements AutoCloseable {
 
         private final LoaderTask mTask;
diff --git a/src/com/android/launcher3/PromiseAppInfo.java b/src/com/android/launcher3/PromiseAppInfo.java
index 4ad0b3d..e55e4bd 100644
--- a/src/com/android/launcher3/PromiseAppInfo.java
+++ b/src/com/android/launcher3/PromiseAppInfo.java
@@ -19,16 +19,16 @@
 import android.content.Context;
 import android.content.Intent;
 
-import com.android.launcher3.compat.PackageInstallerCompat;
-import com.android.launcher3.util.PackageManagerHelper;
-
 import androidx.annotation.NonNull;
 
+import com.android.launcher3.pm.PackageInstallInfo;
+import com.android.launcher3.util.PackageManagerHelper;
+
 public class PromiseAppInfo extends AppInfo {
 
     public int level = 0;
 
-    public PromiseAppInfo(@NonNull PackageInstallerCompat.PackageInstallInfo installInfo) {
+    public PromiseAppInfo(@NonNull PackageInstallInfo installInfo) {
         componentName = installInfo.componentName;
         intent = new Intent(Intent.ACTION_MAIN)
                 .addCategory(Intent.CATEGORY_LAUNCHER)
diff --git a/src/com/android/launcher3/SessionCommitReceiver.java b/src/com/android/launcher3/SessionCommitReceiver.java
index 6853bf6..55402dd 100644
--- a/src/com/android/launcher3/SessionCommitReceiver.java
+++ b/src/com/android/launcher3/SessionCommitReceiver.java
@@ -16,6 +16,8 @@
 
 package com.android.launcher3;
 
+import static com.android.launcher3.pm.PackageInstallerCompat.getUserHandle;
+
 import android.annotation.TargetApi;
 import android.content.BroadcastReceiver;
 import android.content.ComponentName;
@@ -38,13 +40,11 @@
 import android.util.Log;
 
 import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.util.Executors;
-import com.android.launcher3.compat.PackageInstallerCompat;
 
 import java.util.List;
 
-import static com.android.launcher3.compat.PackageInstallerCompat.getUserHandle;
-
 /**
  * BroadcastReceiver to handle session commit intent.
  */
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompat.java b/src/com/android/launcher3/compat/LauncherAppsCompat.java
index cdb5c4d..047346d 100644
--- a/src/com/android/launcher3/compat/LauncherAppsCompat.java
+++ b/src/com/android/launcher3/compat/LauncherAppsCompat.java
@@ -21,7 +21,6 @@
 import android.content.Intent;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.LauncherActivityInfo;
-import android.content.pm.PackageInstaller;
 import android.content.pm.ShortcutInfo;
 import android.graphics.Rect;
 import android.os.Bundle;
@@ -59,9 +58,7 @@
     public static LauncherAppsCompat getInstance(Context context) {
         synchronized (sInstanceLock) {
             if (sInstance == null) {
-                if (Utilities.ATLEAST_Q) {
-                    sInstance = new LauncherAppsCompatVQ(context.getApplicationContext());
-                } else if (Utilities.ATLEAST_OREO) {
+                if (Utilities.ATLEAST_OREO) {
                     sInstance = new LauncherAppsCompatVO(context.getApplicationContext());
                 } else {
                     sInstance = new LauncherAppsCompatVL(context.getApplicationContext());
@@ -88,6 +85,4 @@
             UserHandle user);
     public abstract List<ShortcutConfigActivityInfo> getCustomShortcutActivityList(
             @Nullable PackageUserKey packageUser);
-
-    public abstract List<PackageInstaller.SessionInfo> getAllPackageInstallerSessions();
 }
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
index 1885d8f..f1b9756 100644
--- a/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
+++ b/src/com/android/launcher3/compat/LauncherAppsCompatVL.java
@@ -22,7 +22,6 @@
 import android.content.pm.ApplicationInfo;
 import android.content.pm.LauncherActivityInfo;
 import android.content.pm.LauncherApps;
-import android.content.pm.PackageInstaller;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.pm.ShortcutInfo;
@@ -33,6 +32,9 @@
 import android.util.ArrayMap;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.compat.ShortcutConfigActivityInfo.ShortcutConfigActivityInfoVL;
 import com.android.launcher3.testing.TestProtocol;
 import com.android.launcher3.util.PackageUserKey;
@@ -41,9 +43,6 @@
 import java.util.Arrays;
 import java.util.List;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
 public class LauncherAppsCompatVL extends LauncherAppsCompat {
 
     protected final LauncherApps mLauncherApps;
@@ -207,10 +206,5 @@
         }
         return result;
     }
-
-    @Override
-    public List<PackageInstaller.SessionInfo> getAllPackageInstallerSessions() {
-        return mContext.getPackageManager().getPackageInstaller().getAllSessions();
-    }
 }
 
diff --git a/src/com/android/launcher3/compat/LauncherAppsCompatVQ.java b/src/com/android/launcher3/compat/LauncherAppsCompatVQ.java
deleted file mode 100644
index 0a1811e..0000000
--- a/src/com/android/launcher3/compat/LauncherAppsCompatVQ.java
+++ /dev/null
@@ -1,36 +0,0 @@
-/*
- * Copyright (C) 2019 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.annotation.TargetApi;
-import android.content.Context;
-import android.content.Intent;
-import android.content.pm.PackageInstaller;
-
-import java.util.List;
-
-@TargetApi(29)
-public class LauncherAppsCompatVQ extends LauncherAppsCompatVO {
-
-    LauncherAppsCompatVQ(Context context) {
-        super(context);
-    }
-
-    public List<PackageInstaller.SessionInfo> getAllPackageInstallerSessions() {
-        return mLauncherApps.getAllPackageInstallerSessions();
-    }
-}
diff --git a/src/com/android/launcher3/compat/PackageInstallerCompat.java b/src/com/android/launcher3/compat/PackageInstallerCompat.java
deleted file mode 100644
index 55df98b..0000000
--- a/src/com/android/launcher3/compat/PackageInstallerCompat.java
+++ /dev/null
@@ -1,118 +0,0 @@
-/*
- * 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.PackageInstaller;
-import android.content.pm.PackageInstaller.SessionInfo;
-import android.os.Process;
-import android.os.UserHandle;
-
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.List;
-
-import androidx.annotation.NonNull;
-
-import com.android.launcher3.Utilities;
-import com.android.launcher3.util.PackageUserKey;
-
-public abstract class PackageInstallerCompat {
-
-    // Set<String> of session ids of promise icons that have been added to the home screen
-    // as FLAG_PROMISE_NEW_INSTALLS.
-    protected static final String PROMISE_ICON_IDS = "promise_icon_ids";
-
-    public static final int STATUS_INSTALLED = 0;
-    public static final int STATUS_INSTALLING = 1;
-    public static final int STATUS_FAILED = 2;
-
-    private static final Object sInstanceLock = new Object();
-    private static PackageInstallerCompat sInstance;
-
-    public static PackageInstallerCompat getInstance(Context context) {
-        synchronized (sInstanceLock) {
-            if (sInstance == null) {
-                sInstance = new PackageInstallerCompatVL(context);
-            }
-            return sInstance;
-        }
-    }
-
-    public static UserHandle getUserHandle(SessionInfo info) {
-        return Utilities.ATLEAST_Q ? info.getUser() : Process.myUserHandle();
-    }
-
-    /**
-     * @return a map of active installs to their progress
-     */
-    public abstract HashMap<PackageUserKey, SessionInfo> updateAndGetActiveSessionCache();
-
-    /**
-     * @return an active SessionInfo for {@param pkg} or null if none exists.
-     */
-    public abstract SessionInfo getActiveSessionInfo(UserHandle user, String pkg);
-
-    public abstract void onStop();
-
-    public static final class PackageInstallInfo {
-        public final ComponentName componentName;
-        public final String packageName;
-        public final int state;
-        public final int progress;
-        public final UserHandle user;
-
-        private PackageInstallInfo(@NonNull SessionInfo info) {
-            this.state = STATUS_INSTALLING;
-            this.packageName = info.getAppPackageName();
-            this.componentName = new ComponentName(packageName, "");
-            this.progress = (int) (info.getProgress() * 100f);
-            this.user = getUserHandle(info);
-        }
-
-        public PackageInstallInfo(String packageName, int state, int progress, UserHandle user) {
-            this.state = state;
-            this.packageName = packageName;
-            this.componentName = new ComponentName(packageName, "");
-            this.progress = progress;
-            this.user = user;
-        }
-
-        public static PackageInstallInfo fromInstallingState(SessionInfo info) {
-            return new PackageInstallInfo(info);
-        }
-
-        public static PackageInstallInfo fromState(int state, String packageName, UserHandle user) {
-            return new PackageInstallInfo(packageName, state, 0 /* progress */, user);
-        }
-
-    }
-
-    public abstract List<SessionInfo> getAllVerifiedSessions();
-
-    /**
-     * Returns true if a promise icon was already added to the home screen for {@param sessionId}.
-     * Applicable only for icons with flag FLAG_PROMISE_NEW_INSTALLS.
-     */
-    public abstract boolean promiseIconAddedForId(int sessionId);
-
-    /**
-     * Applicable only for icons with flag FLAG_PROMISE_NEW_INSTALLS.
-     */
-    public abstract void removePromiseIconId(int sessionId);
-}
diff --git a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java b/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
deleted file mode 100644
index f421f7c..0000000
--- a/src/com/android/launcher3/compat/PackageInstallerCompatVL.java
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * 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 static com.android.launcher3.Utilities.getPrefs;
-import static com.android.launcher3.util.Executors.MODEL_EXECUTOR;
-
-import android.content.Context;
-import android.content.pm.ApplicationInfo;
-import android.content.pm.PackageInstaller;
-import android.content.pm.PackageInstaller.SessionCallback;
-import android.content.pm.PackageInstaller.SessionInfo;
-import android.content.pm.PackageManager;
-import android.os.UserHandle;
-import android.text.TextUtils;
-import android.util.SparseArray;
-
-import com.android.launcher3.LauncherAppState;
-import com.android.launcher3.LauncherModel;
-import com.android.launcher3.SessionCommitReceiver;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.config.FeatureFlags;
-import com.android.launcher3.icons.IconCache;
-import com.android.launcher3.util.IntArray;
-import com.android.launcher3.util.IntSet;
-import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.util.Thunk;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-
-public class PackageInstallerCompatVL extends PackageInstallerCompat {
-
-    private static final boolean DEBUG = false;
-
-    @Thunk final SparseArray<PackageUserKey> mActiveSessions = new SparseArray<>();
-
-    @Thunk final PackageInstaller mInstaller;
-    private final IconCache mCache;
-    private final Context mAppContext;
-    private final HashMap<String,Boolean> mSessionVerifiedMap = new HashMap<>();
-    private final LauncherAppsCompat mLauncherApps;
-    private final IntSet mPromiseIconIds;
-
-    PackageInstallerCompatVL(Context context) {
-        mAppContext = context.getApplicationContext();
-        mInstaller = context.getPackageManager().getPackageInstaller();
-        mCache = LauncherAppState.getInstance(context).getIconCache();
-        mInstaller.registerSessionCallback(mCallback, MODEL_EXECUTOR.getHandler());
-        mLauncherApps = LauncherAppsCompat.getInstance(context);
-        mPromiseIconIds = IntSet.wrap(IntArray.fromConcatString(
-                getPrefs(context).getString(PROMISE_ICON_IDS, "")));
-
-        cleanUpPromiseIconIds();
-    }
-
-    private void cleanUpPromiseIconIds() {
-        IntArray existingIds = new IntArray();
-        for (SessionInfo info : updateAndGetActiveSessionCache().values()) {
-            existingIds.add(info.getSessionId());
-        }
-        IntArray idsToRemove = new IntArray();
-
-        for (int i = mPromiseIconIds.size() - 1; i >= 0; --i) {
-            if (!existingIds.contains(mPromiseIconIds.getArray().get(i))) {
-                idsToRemove.add(mPromiseIconIds.getArray().get(i));
-            }
-        }
-        for (int i = idsToRemove.size() - 1; i >= 0; --i) {
-            mPromiseIconIds.getArray().removeValue(idsToRemove.get(i));
-        }
-    }
-
-    @Override
-    public HashMap<PackageUserKey, SessionInfo> updateAndGetActiveSessionCache() {
-        HashMap<PackageUserKey, SessionInfo> activePackages = new HashMap<>();
-        for (SessionInfo info : getAllVerifiedSessions()) {
-            addSessionInfoToCache(info, getUserHandle(info));
-            if (info.getAppPackageName() != null) {
-                activePackages.put(new PackageUserKey(info.getAppPackageName(),
-                        getUserHandle(info)), info);
-                mActiveSessions.put(info.getSessionId(),
-                        new PackageUserKey(info.getAppPackageName(), getUserHandle(info)));
-            }
-        }
-        return activePackages;
-    }
-
-    public SessionInfo getActiveSessionInfo(UserHandle user, String pkg) {
-        for (SessionInfo info : getAllVerifiedSessions()) {
-            boolean match = pkg.equals(info.getAppPackageName());
-            if (Utilities.ATLEAST_Q && !user.equals(getUserHandle(info))) {
-                match = false;
-            }
-            if (match) {
-                return info;
-            }
-        }
-        return null;
-    }
-
-    @Thunk void addSessionInfoToCache(SessionInfo info, UserHandle user) {
-        String packageName = info.getAppPackageName();
-        if (packageName != null) {
-            mCache.cachePackageInstallInfo(packageName, user, info.getAppIcon(),
-                    info.getAppLabel());
-        }
-    }
-
-    @Override
-    public void onStop() {
-        mInstaller.unregisterSessionCallback(mCallback);
-    }
-
-    @Thunk void sendUpdate(PackageInstallInfo info) {
-        LauncherAppState app = LauncherAppState.getInstanceNoCreate();
-        if (app != null) {
-            app.getModel().setPackageState(info);
-        }
-    }
-
-    /**
-     * Add a promise app icon to the workspace iff:
-     * - The settings for it are enabled
-     * - The user installed the app
-     * - There is an app icon and label (For apps with no launching activity, no icon is provided).
-     * - The app is not already installed
-     * - A promise icon for the session has not already been created
-     */
-    private void tryQueuePromiseAppIcon(SessionInfo sessionInfo) {
-        if (Utilities.ATLEAST_OREO && FeatureFlags.PROMISE_APPS_NEW_INSTALLS.get()
-                && SessionCommitReceiver.isEnabled(mAppContext)
-                && verify(sessionInfo) != null
-                && sessionInfo.getInstallReason() == PackageManager.INSTALL_REASON_USER
-                && sessionInfo.getAppIcon() != null
-                && !TextUtils.isEmpty(sessionInfo.getAppLabel())
-                && !mPromiseIconIds.contains(sessionInfo.getSessionId())
-                && mLauncherApps.getApplicationInfo(sessionInfo.getAppPackageName(), 0,
-                        getUserHandle(sessionInfo)) == null) {
-            SessionCommitReceiver.queuePromiseAppIconAddition(mAppContext, sessionInfo);
-            mPromiseIconIds.add(sessionInfo.getSessionId());
-            updatePromiseIconPrefs();
-        }
-    }
-
-    private final SessionCallback mCallback = new SessionCallback() {
-
-        @Override
-        public void onCreated(int sessionId) {
-            SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
-            if (FeatureFlags.PROMISE_APPS_IN_ALL_APPS.get() && sessionInfo != null) {
-                LauncherAppState app = LauncherAppState.getInstanceNoCreate();
-                if (app != null) {
-                    app.getModel().onInstallSessionCreated(
-                            PackageInstallInfo.fromInstallingState(sessionInfo));
-                }
-            }
-
-            tryQueuePromiseAppIcon(sessionInfo);
-        }
-
-        @Override
-        public void onFinished(int sessionId, boolean success) {
-            // For a finished session, we can't get the session info. So use the
-            // packageName from our local cache.
-            PackageUserKey key = mActiveSessions.get(sessionId);
-            mActiveSessions.remove(sessionId);
-
-            if (key != null && key.mPackageName != null) {
-                String packageName = key.mPackageName;
-                sendUpdate(PackageInstallInfo.fromState(success ? STATUS_INSTALLED : STATUS_FAILED,
-                        packageName, key.mUser));
-
-                if (!success && FeatureFlags.PROMISE_APPS_NEW_INSTALLS.get()
-                        && mPromiseIconIds.contains(sessionId)) {
-                    LauncherAppState appState = LauncherAppState.getInstanceNoCreate();
-                    if (appState != null) {
-                        appState.getModel().onSessionFailure(packageName, key.mUser);
-                    }
-                    // If it is successful, the id is removed in the the package added flow.
-                    removePromiseIconId(sessionId);
-                }
-            }
-        }
-
-        @Override
-        public void onProgressChanged(int sessionId, float progress) {
-            SessionInfo session = verify(mInstaller.getSessionInfo(sessionId));
-            if (session != null && session.getAppPackageName() != null) {
-                sendUpdate(PackageInstallInfo.fromInstallingState(session));
-            }
-        }
-
-        @Override
-        public void onActiveChanged(int sessionId, boolean active) { }
-
-        @Override
-        public void onBadgingChanged(int sessionId) {
-            SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
-            if (sessionInfo != null) {
-                tryQueuePromiseAppIcon(sessionInfo);
-            }
-        }
-
-        private SessionInfo pushSessionDisplayToLauncher(int sessionId) {
-            SessionInfo session = verify(mInstaller.getSessionInfo(sessionId));
-            if (session != null && session.getAppPackageName() != null) {
-                mActiveSessions.put(session.getSessionId(),
-                        new PackageUserKey(session.getAppPackageName(), getUserHandle(session)));
-                addSessionInfoToCache(session, getUserHandle(session));
-                LauncherAppState app = LauncherAppState.getInstanceNoCreate();
-                if (app != null) {
-                    app.getModel().updateSessionDisplayInfo(session.getAppPackageName());
-                }
-                return session;
-            }
-            return null;
-        }
-    };
-
-    private PackageInstaller.SessionInfo verify(PackageInstaller.SessionInfo sessionInfo) {
-        if (sessionInfo == null
-                || sessionInfo.getInstallerPackageName() == null
-                || TextUtils.isEmpty(sessionInfo.getAppPackageName())) {
-            return null;
-        }
-        String pkg = sessionInfo.getInstallerPackageName();
-        synchronized (mSessionVerifiedMap) {
-            if (!mSessionVerifiedMap.containsKey(pkg)) {
-                LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(mAppContext);
-                boolean hasSystemFlag = launcherApps.getApplicationInfo(pkg,
-                        ApplicationInfo.FLAG_SYSTEM, getUserHandle(sessionInfo)) != null;
-                mSessionVerifiedMap.put(pkg, DEBUG || hasSystemFlag);
-            }
-        }
-        return mSessionVerifiedMap.get(pkg) ? sessionInfo : null;
-    }
-
-    @Override
-    public List<SessionInfo> getAllVerifiedSessions() {
-        List<SessionInfo> list = new ArrayList<>(Utilities.ATLEAST_Q
-                ? mLauncherApps.getAllPackageInstallerSessions()
-                : mInstaller.getAllSessions());
-        Iterator<SessionInfo> it = list.iterator();
-        while (it.hasNext()) {
-            if (verify(it.next()) == null) {
-                it.remove();
-            }
-        }
-        return list;
-    }
-
-    @Override
-    public boolean promiseIconAddedForId(int sessionId) {
-        return mPromiseIconIds.contains(sessionId);
-    }
-
-    @Override
-    public void removePromiseIconId(int sessionId) {
-        if (mPromiseIconIds.contains(sessionId)) {
-            mPromiseIconIds.getArray().removeValue(sessionId);
-            updatePromiseIconPrefs();
-        }
-    }
-
-    private void updatePromiseIconPrefs() {
-        getPrefs(mAppContext).edit()
-                .putString(PROMISE_ICON_IDS, mPromiseIconIds.getArray().toConcatString())
-                .apply();
-    }
-}
diff --git a/src/com/android/launcher3/icons/IconCache.java b/src/com/android/launcher3/icons/IconCache.java
index 9c46260..b1818a0 100644
--- a/src/com/android/launcher3/icons/IconCache.java
+++ b/src/com/android/launcher3/icons/IconCache.java
@@ -24,6 +24,7 @@
 import android.content.pm.ApplicationInfo;
 import android.content.pm.LauncherActivityInfo;
 import android.content.pm.PackageInfo;
+import android.content.pm.PackageInstaller;
 import android.content.pm.PackageManager;
 import android.content.pm.PackageManager.NameNotFoundException;
 import android.graphics.drawable.Drawable;
@@ -50,6 +51,7 @@
 import com.android.launcher3.icons.cache.HandlerRunnable;
 import com.android.launcher3.model.PackageItemInfo;
 import com.android.launcher3.util.InstantAppResolver;
+import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.Preconditions;
 
 import java.util.function.Supplier;
@@ -235,6 +237,10 @@
         return mIconProvider.getIcon(info, mIconDpi, flattenDrawable);
     }
 
+    public void updateSessionCache(PackageUserKey key, PackageInstaller.SessionInfo info) {
+        cachePackageInstallInfo(key.mPackageName, key.mUser, info.getAppIcon(), info.getAppLabel());
+    }
+
     @Override
     protected String getIconSystemState(String packageName) {
         return mIconProvider.getSystemStateForPackage(mSystemState, packageName)
diff --git a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
index dfd5a70..844a2a6 100644
--- a/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
+++ b/src/com/android/launcher3/model/AddWorkspaceItemsTask.java
@@ -29,11 +29,11 @@
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherAppWidgetInfo;
 import com.android.launcher3.LauncherModel.CallbackTask;
-import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.WorkspaceItemInfo;
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
+import com.android.launcher3.model.BgDataModel.Callbacks;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.util.GridOccupancy;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.PackageManagerHelper;
diff --git a/src/com/android/launcher3/model/AllAppsList.java b/src/com/android/launcher3/model/AllAppsList.java
index 3873a17..1e1df88 100644
--- a/src/com/android/launcher3/model/AllAppsList.java
+++ b/src/com/android/launcher3/model/AllAppsList.java
@@ -28,14 +28,16 @@
 import android.os.UserHandle;
 import android.util.Log;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
 import com.android.launcher3.AppFilter;
 import com.android.launcher3.AppInfo;
 import com.android.launcher3.PromiseAppInfo;
 import com.android.launcher3.compat.AlphabeticIndexCompat;
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
 import com.android.launcher3.icons.IconCache;
+import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.util.FlagOp;
 import com.android.launcher3.util.ItemInfoMatcher;
 import com.android.launcher3.util.SafeCloseable;
@@ -46,9 +48,6 @@
 import java.util.List;
 import java.util.function.Consumer;
 
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
 
 /**
  * Stores the list of all applications for the all apps view.
@@ -110,8 +109,7 @@
         mDataChanged = true;
     }
 
-    public void addPromiseApp(Context context,
-                              PackageInstallerCompat.PackageInstallInfo installInfo) {
+    public void addPromiseApp(Context context, PackageInstallInfo installInfo) {
         ApplicationInfo applicationInfo = LauncherAppsCompat.getInstance(context)
                 .getApplicationInfo(installInfo.packageName, 0, installInfo.user);
         // only if not yet installed
@@ -134,10 +132,10 @@
                     && appInfo.user.equals(user)
                     && appInfo instanceof PromiseAppInfo) {
                 final PromiseAppInfo promiseAppInfo = (PromiseAppInfo) appInfo;
-                if (installInfo.state == PackageInstallerCompat.STATUS_INSTALLING) {
+                if (installInfo.state == PackageInstallInfo.STATUS_INSTALLING) {
                     promiseAppInfo.level = installInfo.progress;
                     return promiseAppInfo;
-                } else if (installInfo.state == PackageInstallerCompat.STATUS_FAILED) {
+                } else if (installInfo.state == PackageInstallInfo.STATUS_FAILED) {
                     removeApp(i);
                 }
             }
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTask.java b/src/com/android/launcher3/model/GridSizeMigrationTask.java
index 783e908..ac44b0e 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationTask.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationTask.java
@@ -17,6 +17,8 @@
 import android.util.Log;
 import android.util.SparseArray;
 
+import androidx.annotation.VisibleForTesting;
+
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
@@ -27,21 +29,17 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.Workspace;
 import com.android.launcher3.compat.AppWidgetManagerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.provider.LauncherDbUtils;
 import com.android.launcher3.provider.LauncherDbUtils.SQLiteTransaction;
 import com.android.launcher3.util.GridOccupancy;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSparseArrayMap;
-import com.android.launcher3.util.PackageUserKey;
 
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
-import java.util.function.Consumer;
-
-import androidx.annotation.VisibleForTesting;
 
 /**
  * This class takes care of shrinking the workspace (by maximum of one row and one column), as a
@@ -973,7 +971,7 @@
             validPackages.add(info.packageName);
         }
         PackageInstallerCompat.getInstance(context)
-                .updateAndGetActiveSessionCache().keySet()
+                .getActiveSessions().keySet()
                 .forEach(packageUserKey -> validPackages.add(packageUserKey.mPackageName));
         return validPackages;
     }
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 8fc5629..97cf846 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -53,7 +53,6 @@
 import com.android.launcher3.WorkspaceItemInfo;
 import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.compat.LauncherAppsCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.folder.Folder;
@@ -65,6 +64,8 @@
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.icons.cache.IconCacheUpdateHandler;
 import com.android.launcher3.logging.FileLog;
+import com.android.launcher3.pm.PackageInstallInfo;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.provider.ImportDataTask;
 import com.android.launcher3.qsb.QsbContainerView;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
@@ -286,7 +287,9 @@
             mBgDataModel.clear();
 
             final HashMap<PackageUserKey, SessionInfo> installingPkgs =
-                    mPackageInstaller.updateAndGetActiveSessionCache();
+                    mPackageInstaller.getActiveSessions();
+            installingPkgs.forEach(mApp.getIconCache()::updateSessionCache);
+
             final PackageUserKey tempPackageKey = new PackageUserKey(null, null);
             mFirstScreenBroadcast = new FirstScreenBroadcast(installingPkgs);
 
@@ -844,7 +847,7 @@
             for (PackageInstaller.SessionInfo info :
                     mPackageInstaller.getAllVerifiedSessions()) {
                 mBgAllAppsList.addPromiseApp(mApp.getContext(),
-                        PackageInstallerCompat.PackageInstallInfo.fromInstallingState(info));
+                        PackageInstallInfo.fromInstallingState(info));
             }
         }
 
diff --git a/src/com/android/launcher3/model/PackageInstallStateChangedTask.java b/src/com/android/launcher3/model/PackageInstallStateChangedTask.java
index 802cbc7..2832150 100644
--- a/src/com/android/launcher3/model/PackageInstallStateChangedTask.java
+++ b/src/com/android/launcher3/model/PackageInstallStateChangedTask.java
@@ -19,16 +19,14 @@
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 
-import com.android.launcher3.AppInfo;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherAppWidgetInfo;
 import com.android.launcher3.LauncherModel.CallbackTask;
-import com.android.launcher3.model.BgDataModel.Callbacks;
 import com.android.launcher3.PromiseAppInfo;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.PackageInstallerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat.PackageInstallInfo;
+import com.android.launcher3.model.BgDataModel.Callbacks;
+import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.util.InstantAppResolver;
 
 import java.util.HashSet;
@@ -46,7 +44,7 @@
 
     @Override
     public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
-        if (mInstallInfo.state == PackageInstallerCompat.STATUS_INSTALLED) {
+        if (mInstallInfo.state == PackageInstallInfo.STATUS_INSTALLED) {
             try {
                 // For instant apps we do not get package-add. Use setting events to update
                 // any pinned icons.
@@ -79,7 +77,7 @@
                     if (si.hasPromiseIconUi() && (cn != null)
                             && mInstallInfo.packageName.equals(cn.getPackageName())) {
                         si.setInstallProgress(mInstallInfo.progress);
-                        if (mInstallInfo.state == PackageInstallerCompat.STATUS_FAILED) {
+                        if (mInstallInfo.state == PackageInstallInfo.STATUS_FAILED) {
                             // Mark this info as broken.
                             si.status &= ~WorkspaceItemInfo.FLAG_INSTALL_SESSION_ACTIVE;
                         }
diff --git a/src/com/android/launcher3/pm/InstallSessionTracker.java b/src/com/android/launcher3/pm/InstallSessionTracker.java
new file mode 100644
index 0000000..f157603
--- /dev/null
+++ b/src/com/android/launcher3/pm/InstallSessionTracker.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2019 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.pm;
+
+import static com.android.launcher3.pm.PackageInstallInfo.STATUS_FAILED;
+import static com.android.launcher3.pm.PackageInstallInfo.STATUS_INSTALLED;
+import static com.android.launcher3.pm.PackageInstallerCompat.getUserHandle;
+
+import android.content.pm.PackageInstaller;
+import android.content.pm.PackageInstaller.SessionInfo;
+import android.os.UserHandle;
+import android.util.SparseArray;
+
+import com.android.launcher3.util.PackageUserKey;
+
+public class InstallSessionTracker extends PackageInstaller.SessionCallback {
+
+    // Lazily initialized
+    private SparseArray<PackageUserKey> mActiveSessions = null;
+
+    private final PackageInstallerCompat mInstallerCompat;
+    private final Callback mCallback;
+
+    InstallSessionTracker(PackageInstallerCompat installerCompat, Callback callback) {
+        mInstallerCompat = installerCompat;
+        mCallback = callback;
+    }
+
+    @Override
+    public void onCreated(int sessionId) {
+        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
+        if (sessionInfo != null) {
+            mCallback.onInstallSessionCreated(PackageInstallInfo.fromInstallingState(sessionInfo));
+        }
+
+        mInstallerCompat.tryQueuePromiseAppIcon(sessionInfo);
+    }
+
+    @Override
+    public void onFinished(int sessionId, boolean success) {
+        // For a finished session, we can't get the session info. So use the
+        // packageName from our local cache.
+        SparseArray<PackageUserKey> activeSessions = getActiveSessionMap();
+        PackageUserKey key = activeSessions.get(sessionId);
+        activeSessions.remove(sessionId);
+
+        if (key != null && key.mPackageName != null) {
+            String packageName = key.mPackageName;
+            PackageInstallInfo info = PackageInstallInfo.fromState(
+                    success ? STATUS_INSTALLED : STATUS_FAILED,
+                    packageName, key.mUser);
+            mCallback.onPackageStateChanged(info);
+
+            if (!success && mInstallerCompat.promiseIconAddedForId(sessionId)) {
+                mCallback.onSessionFailure(packageName, key.mUser);
+                // If it is successful, the id is removed in the the package added flow.
+                mInstallerCompat.removePromiseIconId(sessionId);
+            }
+        }
+    }
+
+    @Override
+    public void onProgressChanged(int sessionId, float progress) {
+        SessionInfo session = mInstallerCompat.getVerifiedSessionInfo(sessionId);
+        if (session != null && session.getAppPackageName() != null) {
+            mCallback.onPackageStateChanged(PackageInstallInfo.fromInstallingState(session));
+        }
+    }
+
+    @Override
+    public void onActiveChanged(int sessionId, boolean active) { }
+
+    @Override
+    public void onBadgingChanged(int sessionId) {
+        SessionInfo sessionInfo = pushSessionDisplayToLauncher(sessionId);
+        if (sessionInfo != null) {
+            mInstallerCompat.tryQueuePromiseAppIcon(sessionInfo);
+        }
+    }
+
+    private SessionInfo pushSessionDisplayToLauncher(int sessionId) {
+        SessionInfo session = mInstallerCompat.getVerifiedSessionInfo(sessionId);
+        if (session != null && session.getAppPackageName() != null) {
+            PackageUserKey key =
+                    new PackageUserKey(session.getAppPackageName(), getUserHandle(session));
+            getActiveSessionMap().put(session.getSessionId(), key);
+            mCallback.onUpdateSessionDisplay(key, session);
+            return session;
+        }
+        return null;
+    }
+
+    private SparseArray<PackageUserKey> getActiveSessionMap() {
+        if (mActiveSessions == null) {
+            mActiveSessions = new SparseArray<>();
+            mInstallerCompat.getActiveSessions().forEach(
+                    (key, si) -> mActiveSessions.put(si.getSessionId(), key));
+        }
+        return mActiveSessions;
+    }
+
+    public void unregister() {
+        mInstallerCompat.unregister(this);
+    }
+
+    public interface Callback {
+
+        void onSessionFailure(String packageName, UserHandle user);
+
+        void onUpdateSessionDisplay(PackageUserKey key, SessionInfo info);
+
+        void onPackageStateChanged(PackageInstallInfo info);
+
+        void onInstallSessionCreated(PackageInstallInfo info);
+    }
+}
diff --git a/src/com/android/launcher3/pm/PackageInstallInfo.java b/src/com/android/launcher3/pm/PackageInstallInfo.java
new file mode 100644
index 0000000..6776ec4
--- /dev/null
+++ b/src/com/android/launcher3/pm/PackageInstallInfo.java
@@ -0,0 +1,60 @@
+/*
+ * Copyright (C) 2019 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.pm;
+
+import android.content.ComponentName;
+import android.content.pm.PackageInstaller;
+import android.os.UserHandle;
+
+import androidx.annotation.NonNull;
+
+public final class PackageInstallInfo {
+
+    public static final int STATUS_INSTALLED = 0;
+    public static final int STATUS_INSTALLING = 1;
+    public static final int STATUS_FAILED = 2;
+
+    public final ComponentName componentName;
+    public final String packageName;
+    public final int state;
+    public final int progress;
+    public final UserHandle user;
+
+    private PackageInstallInfo(@NonNull PackageInstaller.SessionInfo info) {
+        this.state = STATUS_INSTALLING;
+        this.packageName = info.getAppPackageName();
+        this.componentName = new ComponentName(packageName, "");
+        this.progress = (int) (info.getProgress() * 100f);
+        this.user = PackageInstallerCompat.getUserHandle(info);
+    }
+
+    public PackageInstallInfo(String packageName, int state, int progress, UserHandle user) {
+        this.state = state;
+        this.packageName = packageName;
+        this.componentName = new ComponentName(packageName, "");
+        this.progress = progress;
+        this.user = user;
+    }
+
+    public static PackageInstallInfo fromInstallingState(PackageInstaller.SessionInfo info) {
+        return new PackageInstallInfo(info);
+    }
+
+    public static PackageInstallInfo fromState(int state, String packageName, UserHandle user) {
+        return new PackageInstallInfo(packageName, state, 0 /* progress */, user);
+    }
+
+}
diff --git a/src/com/android/launcher3/pm/PackageInstallerCompat.java b/src/com/android/launcher3/pm/PackageInstallerCompat.java
new file mode 100644
index 0000000..520c207
--- /dev/null
+++ b/src/com/android/launcher3/pm/PackageInstallerCompat.java
@@ -0,0 +1,220 @@
+/*
+ * 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.pm;
+
+import static com.android.launcher3.Utilities.getPrefs;
+
+import android.content.Context;
+import android.content.pm.ApplicationInfo;
+import android.content.pm.LauncherApps;
+import android.content.pm.PackageInstaller;
+import android.content.pm.PackageInstaller.SessionInfo;
+import android.content.pm.PackageManager;
+import android.os.Build;
+import android.os.Process;
+import android.os.UserHandle;
+import android.text.TextUtils;
+
+import com.android.launcher3.SessionCommitReceiver;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.compat.LauncherAppsCompat;
+import com.android.launcher3.config.FeatureFlags;
+import com.android.launcher3.util.IntArray;
+import com.android.launcher3.util.IntSet;
+import com.android.launcher3.util.LooperExecutor;
+import com.android.launcher3.util.PackageUserKey;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+
+public class PackageInstallerCompat {
+
+    // Set<String> of session ids of promise icons that have been added to the home screen
+    // as FLAG_PROMISE_NEW_INSTALLS.
+    protected static final String PROMISE_ICON_IDS = "promise_icon_ids";
+
+    private static final Object sInstanceLock = new Object();
+    private static final boolean DEBUG = false;
+    private static PackageInstallerCompat sInstance;
+    private final LauncherApps mLauncherApps;
+    private final Context mAppContext;
+    private final IntSet mPromiseIconIds;
+
+    private final PackageInstaller mInstaller;
+    private final HashMap<String, Boolean> mSessionVerifiedMap = new HashMap<>();
+
+    public PackageInstallerCompat(Context context) {
+        mInstaller = context.getPackageManager().getPackageInstaller();
+        mAppContext = context.getApplicationContext();
+        mLauncherApps = context.getSystemService(LauncherApps.class);
+
+        mPromiseIconIds = IntSet.wrap(IntArray.fromConcatString(
+                getPrefs(context).getString(PROMISE_ICON_IDS, "")));
+
+        cleanUpPromiseIconIds();
+    }
+
+    public static PackageInstallerCompat getInstance(Context context) {
+        synchronized (sInstanceLock) {
+            if (sInstance == null) {
+                sInstance = new PackageInstallerCompat(context);
+            }
+            return sInstance;
+        }
+    }
+
+    public static UserHandle getUserHandle(SessionInfo info) {
+        return Utilities.ATLEAST_Q ? info.getUser() : Process.myUserHandle();
+    }
+
+    protected void cleanUpPromiseIconIds() {
+        IntArray existingIds = new IntArray();
+        for (SessionInfo info : getActiveSessions().values()) {
+            existingIds.add(info.getSessionId());
+        }
+        IntArray idsToRemove = new IntArray();
+
+        for (int i = mPromiseIconIds.size() - 1; i >= 0; --i) {
+            if (!existingIds.contains(mPromiseIconIds.getArray().get(i))) {
+                idsToRemove.add(mPromiseIconIds.getArray().get(i));
+            }
+        }
+        for (int i = idsToRemove.size() - 1; i >= 0; --i) {
+            mPromiseIconIds.getArray().removeValue(idsToRemove.get(i));
+        }
+    }
+
+    public HashMap<PackageUserKey, SessionInfo> getActiveSessions() {
+        HashMap<PackageUserKey, SessionInfo> activePackages = new HashMap<>();
+        for (SessionInfo info : getAllVerifiedSessions()) {
+            activePackages.put(
+                    new PackageUserKey(info.getAppPackageName(), getUserHandle(info)), info);
+        }
+        return activePackages;
+    }
+
+    public SessionInfo getActiveSessionInfo(UserHandle user, String pkg) {
+        for (SessionInfo info : getAllVerifiedSessions()) {
+            boolean match = pkg.equals(info.getAppPackageName());
+            if (Utilities.ATLEAST_Q && !user.equals(getUserHandle(info))) {
+                match = false;
+            }
+            if (match) {
+                return info;
+            }
+        }
+        return null;
+    }
+
+    private void updatePromiseIconPrefs() {
+        getPrefs(mAppContext).edit()
+                .putString(PROMISE_ICON_IDS, mPromiseIconIds.getArray().toConcatString())
+                .apply();
+    }
+
+    SessionInfo getVerifiedSessionInfo(int sessionId) {
+        return verify(mInstaller.getSessionInfo(sessionId));
+    }
+
+    private SessionInfo verify(SessionInfo sessionInfo) {
+        if (sessionInfo == null
+                || sessionInfo.getInstallerPackageName() == null
+                || TextUtils.isEmpty(sessionInfo.getAppPackageName())) {
+            return null;
+        }
+        String pkg = sessionInfo.getInstallerPackageName();
+        synchronized (mSessionVerifiedMap) {
+            if (!mSessionVerifiedMap.containsKey(pkg)) {
+                LauncherAppsCompat launcherApps = LauncherAppsCompat.getInstance(mAppContext);
+                boolean hasSystemFlag = launcherApps.getApplicationInfo(pkg,
+                        ApplicationInfo.FLAG_SYSTEM, getUserHandle(sessionInfo)) != null;
+                mSessionVerifiedMap.put(pkg, DEBUG || hasSystemFlag);
+            }
+        }
+        return mSessionVerifiedMap.get(pkg) ? sessionInfo : null;
+    }
+
+    public List<SessionInfo> getAllVerifiedSessions() {
+        List<SessionInfo> list = new ArrayList<>(Utilities.ATLEAST_Q
+                ? mLauncherApps.getAllPackageInstallerSessions()
+                : mInstaller.getAllSessions());
+        Iterator<SessionInfo> it = list.iterator();
+        while (it.hasNext()) {
+            if (verify(it.next()) == null) {
+                it.remove();
+            }
+        }
+        return list;
+    }
+
+    public boolean promiseIconAddedForId(int sessionId) {
+        return mPromiseIconIds.contains(sessionId);
+    }
+
+    public void removePromiseIconId(int sessionId) {
+        if (mPromiseIconIds.contains(sessionId)) {
+            mPromiseIconIds.getArray().removeValue(sessionId);
+            updatePromiseIconPrefs();
+        }
+    }
+
+    /**
+     * Add a promise app icon to the workspace iff:
+     * - The settings for it are enabled
+     * - The user installed the app
+     * - There is an app icon and label (For apps with no launching activity, no icon is provided).
+     * - The app is not already installed
+     * - A promise icon for the session has not already been created
+     */
+    void tryQueuePromiseAppIcon(PackageInstaller.SessionInfo sessionInfo) {
+        if (Utilities.ATLEAST_OREO && FeatureFlags.PROMISE_APPS_NEW_INSTALLS.get()
+                && SessionCommitReceiver.isEnabled(mAppContext)
+                && verify(sessionInfo) != null
+                && sessionInfo.getInstallReason() == PackageManager.INSTALL_REASON_USER
+                && sessionInfo.getAppIcon() != null
+                && !TextUtils.isEmpty(sessionInfo.getAppLabel())
+                && !mPromiseIconIds.contains(sessionInfo.getSessionId())
+                && LauncherAppsCompat.getInstance(mAppContext).getApplicationInfo(
+                        sessionInfo.getAppPackageName(), 0, getUserHandle(sessionInfo)) == null) {
+            SessionCommitReceiver.queuePromiseAppIconAddition(mAppContext, sessionInfo);
+            mPromiseIconIds.add(sessionInfo.getSessionId());
+            updatePromiseIconPrefs();
+        }
+    }
+
+    public InstallSessionTracker registerInstallTracker(
+            InstallSessionTracker.Callback callback, LooperExecutor executor) {
+        InstallSessionTracker tracker = new InstallSessionTracker(this, callback);
+
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+            mInstaller.registerSessionCallback(tracker, executor.getHandler());
+        } else {
+            mLauncherApps.registerPackageInstallerSessionCallback(executor, tracker);
+        }
+        return tracker;
+    }
+
+    void unregister(InstallSessionTracker tracker) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+            mInstaller.unregisterSessionCallback(tracker);
+        } else {
+            mLauncherApps.unregisterPackageInstallerSessionCallback(tracker);
+        }
+    }
+}
diff --git a/src/com/android/launcher3/touch/ItemClickHandler.java b/src/com/android/launcher3/touch/ItemClickHandler.java
index 03493a5..455af5a 100644
--- a/src/com/android/launcher3/touch/ItemClickHandler.java
+++ b/src/com/android/launcher3/touch/ItemClickHandler.java
@@ -25,8 +25,6 @@
 import static com.android.launcher3.model.AppLaunchTracker.CONTAINER_ALL_APPS;
 
 import android.app.AlertDialog;
-import android.content.ActivityNotFoundException;
-import android.content.Context;
 import android.content.Intent;
 import android.content.pm.LauncherApps;
 import android.content.pm.PackageInstaller.SessionInfo;
@@ -52,9 +50,9 @@
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
 import com.android.launcher3.compat.AppWidgetManagerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.views.FloatingIconView;
 import com.android.launcher3.widget.PendingAppWidgetHostView;
diff --git a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
index ac87148..3d691da 100644
--- a/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
+++ b/tests/src/com/android/launcher3/ui/widget/BindWidgetTest.java
@@ -42,7 +42,7 @@
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.compat.AppWidgetManagerCompat;
-import com.android.launcher3.compat.PackageInstallerCompat;
+import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.tapl.Workspace;
 import com.android.launcher3.ui.AbstractLauncherUiTest;
 import com.android.launcher3.ui.TestViewHelpers;
@@ -302,7 +302,7 @@
 
         Set<String> activePackage = getOnUiThread(() -> {
             Set<String> packages = new HashSet<>();
-            PackageInstallerCompat.getInstance(mTargetContext).updateAndGetActiveSessionCache()
+            PackageInstallerCompat.getInstance(mTargetContext).getActiveSessions()
                     .keySet().forEach(packageUserKey -> packages.add(packageUserKey.mPackageName));
             return packages;
         });