diff --git a/src/com/android/launcher3/AppInfo.java b/src/com/android/launcher3/AppInfo.java
index c8e7619..dfa4796 100644
--- a/src/com/android/launcher3/AppInfo.java
+++ b/src/com/android/launcher3/AppInfo.java
@@ -24,8 +24,8 @@
 import android.os.Build;
 import android.os.Process;
 import android.os.UserHandle;
+import android.os.UserManager;
 
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.PackageManagerHelper;
 
@@ -65,7 +65,7 @@
      * Must not hold the Context.
      */
     public AppInfo(Context context, LauncherActivityInfo info, UserHandle user) {
-        this(info, user, UserManagerCompat.getInstance(context).isQuietModeEnabled(user));
+        this(info, user, context.getSystemService(UserManager.class).isQuietModeEnabled(user));
     }
 
     public AppInfo(LauncherActivityInfo info, UserHandle user, boolean quietModeEnabled) {
diff --git a/src/com/android/launcher3/AppWidgetsRestoredReceiver.java b/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
index 5f1be94..71b7206 100644
--- a/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
+++ b/src/com/android/launcher3/AppWidgetsRestoredReceiver.java
@@ -12,15 +12,15 @@
 import android.database.Cursor;
 import android.util.Log;
 
+import androidx.annotation.WorkerThread;
+
 import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.model.LoaderTask;
 import com.android.launcher3.model.WidgetsModel;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.provider.RestoreDbTask;
 import com.android.launcher3.util.ContentWriter;
 
-import androidx.annotation.WorkerThread;
-
 public class AppWidgetsRestoredReceiver extends BroadcastReceiver {
 
     private static final String TAG = "AWRestoredReceiver";
@@ -82,7 +82,7 @@
 
             // b/135926478: Work profile widget restore is broken in platform. This forces us to
             // recreate the widget during loading with the correct host provider.
-            long mainProfileId = UserManagerCompat.getInstance(context)
+            long mainProfileId = UserCache.INSTANCE.get(context)
                     .getSerialNumberForUser(myUserHandle());
             String oldWidgetId = Integer.toString(oldWidgetIds[i]);
             int result = new ContentWriter(context, new ContentWriter.CommitParams(
diff --git a/src/com/android/launcher3/InstallShortcutReceiver.java b/src/com/android/launcher3/InstallShortcutReceiver.java
index 21359f1..df03027 100644
--- a/src/com/android/launcher3/InstallShortcutReceiver.java
+++ b/src/com/android/launcher3/InstallShortcutReceiver.java
@@ -44,11 +44,11 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.WorkerThread;
 
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.BitmapInfo;
 import com.android.launcher3.icons.GraphicsUtils;
 import com.android.launcher3.icons.LauncherIcons;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
 import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.util.PackageManagerHelper;
@@ -422,7 +422,7 @@
                             .object()
                             .key(LAUNCH_INTENT_KEY).value(launchIntent.toUri(0))
                             .key(DEEPSHORTCUT_TYPE_KEY).value(true)
-                            .key(USER_HANDLE_KEY).value(UserManagerCompat.getInstance(mContext)
+                            .key(USER_HANDLE_KEY).value(UserCache.INSTANCE.get(mContext)
                                     .getSerialNumberForUser(user))
                             .endObject().toString();
                 } else if (providerInfo != null) {
@@ -432,7 +432,7 @@
                             .object()
                             .key(LAUNCH_INTENT_KEY).value(launchIntent.toUri(0))
                             .key(APP_WIDGET_TYPE_KEY).value(true)
-                            .key(USER_HANDLE_KEY).value(UserManagerCompat.getInstance(mContext)
+                            .key(USER_HANDLE_KEY).value(UserCache.INSTANCE.get(mContext)
                                     .getSerialNumberForUser(user))
                             .endObject().toString();
                 }
@@ -460,7 +460,7 @@
                     .key(LAUNCH_INTENT_KEY).value(launchIntent.toUri(0))
                     .key(NAME_KEY).value(name)
                     .key(USER_HANDLE_KEY).value(
-                            UserManagerCompat.getInstance(mContext).getSerialNumberForUser(user))
+                            UserCache.INSTANCE.get(mContext).getSerialNumberForUser(user))
                     .key(APP_SHORTCUT_TYPE_KEY).value(isActivity);
                 if (icon != null) {
                     byte[] iconByteArray = GraphicsUtils.flattenBitmap(icon);
@@ -598,7 +598,7 @@
         private Decoder(String encoded, Context context) throws JSONException, URISyntaxException {
             super(encoded);
             launcherIntent = Intent.parseUri(getString(LAUNCH_INTENT_KEY), 0);
-            user = has(USER_HANDLE_KEY) ? UserManagerCompat.getInstance(context)
+            user = has(USER_HANDLE_KEY) ? UserCache.INSTANCE.get(context)
                     .getUserForSerialNumber(getLong(USER_HANDLE_KEY))
                     : Process.myUserHandle();
             if (user == null) {
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index cb8fe05..fed2498 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -95,7 +95,6 @@
 import com.android.launcher3.allapps.AllAppsTransitionController;
 import com.android.launcher3.allapps.DiscoveryBounce;
 import com.android.launcher3.anim.PropertyListBuilder;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dot.DotInfo;
 import com.android.launcher3.dragndrop.DragController;
@@ -157,6 +156,7 @@
 import com.android.launcher3.widget.WidgetAddFlowHandler;
 import com.android.launcher3.widget.WidgetHostViewLoader;
 import com.android.launcher3.widget.WidgetListRowEntry;
+import com.android.launcher3.widget.WidgetManagerHelper;
 import com.android.launcher3.widget.WidgetsFullSheet;
 import com.android.launcher3.widget.custom.CustomWidgetManager;
 import com.android.systemui.plugins.OverlayPlugin;
@@ -250,7 +250,7 @@
     DragLayer mDragLayer;
     private DragController mDragController;
 
-    private AppWidgetManagerCompat mAppWidgetManager;
+    private WidgetManagerHelper mAppWidgetManager;
     private LauncherAppWidgetHost mAppWidgetHost;
 
     private final int[] mTmpAddItemCellCoordinates = new int[2];
@@ -360,7 +360,7 @@
         mAllAppsController = new AllAppsTransitionController(this);
         mStateManager = new LauncherStateManager(this);
 
-        mAppWidgetManager = AppWidgetManagerCompat.getInstance(this);
+        mAppWidgetManager = new WidgetManagerHelper(this);
         mAppWidgetHost = new LauncherAppWidgetHost(this,
                 appWidgetId -> getWorkspace().removeWidget(appWidgetId));
         mAppWidgetHost.startListening();
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index 79f4821..b8721d7 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -27,7 +27,6 @@
 import android.os.Handler;
 import android.util.Log;
 
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.icons.IconProvider;
@@ -35,6 +34,7 @@
 import com.android.launcher3.notification.NotificationListener;
 import com.android.launcher3.pm.InstallSessionTracker;
 import com.android.launcher3.pm.PackageInstallerCompat;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.MainThreadInitializedObject;
 import com.android.launcher3.util.Preconditions;
 import com.android.launcher3.util.SafeCloseable;
@@ -60,6 +60,7 @@
     private final InstallSessionTracker mInstallSessionTracker;
     private final SimpleBroadcastReceiver mModelChangeReceiver;
     private final SafeCloseable mCalendarChangeTracker;
+    private final SafeCloseable mUserChangeListener;
 
     public static LauncherAppState getInstance(final Context context) {
         return INSTANCE.get(context);
@@ -87,8 +88,6 @@
 
         mContext.getSystemService(LauncherApps.class).registerCallback(mModel);
         mModelChangeReceiver.register(mContext, Intent.ACTION_LOCALE_CHANGED,
-                Intent.ACTION_MANAGED_PROFILE_ADDED,
-                Intent.ACTION_MANAGED_PROFILE_REMOVED,
                 Intent.ACTION_MANAGED_PROFILE_AVAILABLE,
                 Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE,
                 Intent.ACTION_MANAGED_PROFILE_UNLOCKED);
@@ -104,7 +103,9 @@
         CustomWidgetManager.INSTANCE.get(mContext)
                 .setWidgetRefreshCallback(mModel::refreshAndBindWidgetsAndShortcuts);
 
-        UserManagerCompat.getInstance(mContext).enableAndResetCache();
+        mUserChangeListener = UserCache.INSTANCE.get(mContext)
+                .addUserChangeListener(mModel::forceReload);
+
         mInvariantDeviceProfile.addOnChangeListener(this::onIdpChanged);
         new Handler().post( () -> mInvariantDeviceProfile.verifyConfigChangedInBackground(context));
 
@@ -151,6 +152,7 @@
         mContext.getSystemService(LauncherApps.class).unregisterCallback(mModel);
         mInstallSessionTracker.unregister();
         mCalendarChangeTracker.close();
+        mUserChangeListener.close();
         CustomWidgetManager.INSTANCE.get(mContext).setWidgetRefreshCallback(null);
 
         if (mNotificationDotsObserver != null) {
diff --git a/src/com/android/launcher3/LauncherModel.java b/src/com/android/launcher3/LauncherModel.java
index 1e25c0c..67fd7db 100644
--- a/src/com/android/launcher3/LauncherModel.java
+++ b/src/com/android/launcher3/LauncherModel.java
@@ -34,7 +34,6 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.WorkerThread;
 
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.icons.LauncherIcons;
@@ -54,6 +53,7 @@
 import com.android.launcher3.model.UserLockStateChangedTask;
 import com.android.launcher3.pm.InstallSessionTracker;
 import com.android.launcher3.pm.PackageInstallInfo;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.ItemInfoMatcher;
@@ -234,10 +234,6 @@
         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_MANAGED_PROFILE_ADDED.equals(action)
-                || Intent.ACTION_MANAGED_PROFILE_REMOVED.equals(action)) {
-            UserManagerCompat.getInstance(mApp.getContext()).enableAndResetCache();
-            forceReload();
         } else if (Intent.ACTION_MANAGED_PROFILE_AVAILABLE.equals(action) ||
                 Intent.ACTION_MANAGED_PROFILE_UNAVAILABLE.equals(action) ||
                 Intent.ACTION_MANAGED_PROFILE_UNLOCKED.equals(action)) {
@@ -462,7 +458,7 @@
     /**
      * Refreshes the cached shortcuts if the shortcut permission has changed.
      * Current implementation simply reloads the workspace, but it can be optimized to
-     * use partial updates similar to {@link UserManagerCompat}
+     * use partial updates similar to {@link UserCache}
      */
     public void refreshShortcutsIfRequired() {
         MODEL_EXECUTOR.getHandler().removeCallbacks(mShortcutPermissionCheckRunnable);
diff --git a/src/com/android/launcher3/LauncherProvider.java b/src/com/android/launcher3/LauncherProvider.java
index 67fe038..900c966 100644
--- a/src/com/android/launcher3/LauncherProvider.java
+++ b/src/com/android/launcher3/LauncherProvider.java
@@ -47,6 +47,7 @@
 import android.os.Bundle;
 import android.os.Process;
 import android.os.UserHandle;
+import android.os.UserManager;
 import android.provider.BaseColumns;
 import android.provider.Settings;
 import android.text.TextUtils;
@@ -55,10 +56,10 @@
 
 import com.android.launcher3.AutoInstallsLayout.LayoutParserCallback;
 import com.android.launcher3.LauncherSettings.Favorites;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.DbDowngradeHelper;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.provider.LauncherDbUtils;
 import com.android.launcher3.provider.LauncherDbUtils.SQLiteTransaction;
 import com.android.launcher3.provider.RestoreDbTask;
@@ -526,8 +527,8 @@
         InvariantDeviceProfile idp = LauncherAppState.getIDP(getContext());
         int defaultLayout = idp.defaultLayoutId;
 
-        UserManagerCompat um = UserManagerCompat.getInstance(getContext());
-        if (um.isDemoUser() && idp.demoModeLayoutId != 0) {
+        if (getContext().getSystemService(UserManager.class).isDemoUser()
+                && idp.demoModeLayoutId != 0) {
             defaultLayout = idp.demoModeLayoutId;
         }
 
@@ -608,7 +609,7 @@
         }
 
         public long getSerialNumberForUser(UserHandle user) {
-            return UserManagerCompat.getInstance(mContext).getSerialNumberForUser(user);
+            return UserCache.INSTANCE.get(mContext).getSerialNumberForUser(user);
         }
 
         public long getDefaultUserSerial() {
@@ -639,7 +640,7 @@
          */
         protected void handleOneTimeDataUpgrade(SQLiteDatabase db) {
             // Remove "profile extra"
-            UserManagerCompat um = UserManagerCompat.getInstance(mContext);
+            UserCache um = UserCache.INSTANCE.get(mContext);
             for (UserHandle user : um.getUserProfiles()) {
                 long serial = um.getSerialNumberForUser(user);
                 String sql = "update favorites set intent = replace(intent, "
diff --git a/src/com/android/launcher3/WidgetPreviewLoader.java b/src/com/android/launcher3/WidgetPreviewLoader.java
index 37b58d3..2c45c77 100644
--- a/src/com/android/launcher3/WidgetPreviewLoader.java
+++ b/src/com/android/launcher3/WidgetPreviewLoader.java
@@ -37,14 +37,13 @@
 import androidx.annotation.Nullable;
 import androidx.annotation.UiThread;
 
-import com.android.launcher3.compat.AppWidgetManagerCompat;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.icons.GraphicsUtils;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.icons.ShadowGenerator;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.pm.ShortcutConfigActivityInfo;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.Executors;
 import com.android.launcher3.util.PackageUserKey;
@@ -52,6 +51,7 @@
 import com.android.launcher3.util.SQLiteCacheHelper;
 import com.android.launcher3.util.Thunk;
 import com.android.launcher3.widget.WidgetCell;
+import com.android.launcher3.widget.WidgetManagerHelper;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -78,7 +78,7 @@
 
     private final Context mContext;
     private final IconCache mIconCache;
-    private final UserManagerCompat mUserManager;
+    private final UserCache mUserCache;
     private final CacheDb mDb;
 
     private final UserHandle mMyUser = Process.myUserHandle();
@@ -87,7 +87,7 @@
     public WidgetPreviewLoader(Context context, IconCache iconCache) {
         mContext = context;
         mIconCache = iconCache;
-        mUserManager = UserManagerCompat.getInstance(context);
+        mUserCache = UserCache.INSTANCE.get(context);
         mDb = new CacheDb(context);
     }
 
@@ -197,7 +197,7 @@
     @Thunk void writeToDb(WidgetCacheKey key, long[] versions, Bitmap preview) {
         ContentValues values = new ContentValues();
         values.put(CacheDb.COLUMN_COMPONENT, key.componentName.flattenToShortString());
-        values.put(CacheDb.COLUMN_USER, mUserManager.getSerialNumberForUser(key.user));
+        values.put(CacheDb.COLUMN_USER, mUserCache.getSerialNumberForUser(key.user));
         values.put(CacheDb.COLUMN_SIZE, key.size);
         values.put(CacheDb.COLUMN_PACKAGE, key.componentName.getPackageName());
         values.put(CacheDb.COLUMN_VERSION, versions[0]);
@@ -207,7 +207,7 @@
     }
 
     public void removePackage(String packageName, UserHandle user) {
-        removePackage(packageName, user, mUserManager.getSerialNumberForUser(user));
+        removePackage(packageName, user, mUserCache.getSerialNumberForUser(user));
     }
 
     private void removePackage(String packageName, UserHandle user, long userSerial) {
@@ -236,7 +236,7 @@
         LongSparseArray<HashSet<String>> validPackages = new LongSparseArray<>();
 
         for (ComponentKey key : list) {
-            final long userId = mUserManager.getSerialNumberForUser(key.user);
+            final long userId = mUserCache.getSerialNumberForUser(key.user);
             HashSet<String> packages = validPackages.get(userId);
             if (packages == null) {
                 packages = new HashSet<>();
@@ -247,7 +247,7 @@
 
         LongSparseArray<HashSet<String>> packagesToDelete = new LongSparseArray<>();
         long passedUserId = packageUser == null ? 0
-                : mUserManager.getSerialNumberForUser(packageUser.mUser);
+                : mUserCache.getSerialNumberForUser(packageUser.mUser);
         Cursor c = null;
         try {
             c = mDb.query(
@@ -286,7 +286,7 @@
 
             for (int i = 0; i < packagesToDelete.size(); i++) {
                 long userId = packagesToDelete.keyAt(i);
-                UserHandle user = mUserManager.getUserForSerialNumber(userId);
+                UserHandle user = mUserCache.getUserForSerialNumber(userId);
                 for (String pkg : packagesToDelete.valueAt(i)) {
                     removePackage(pkg, user, userId);
                 }
@@ -312,7 +312,7 @@
                             + CacheDb.COLUMN_SIZE + " = ?",
                     new String[]{
                             key.componentName.flattenToShortString(),
-                            Long.toString(mUserManager.getSerialNumberForUser(key.user)),
+                            Long.toString(mUserCache.getSerialNumberForUser(key.user)),
                             key.size
                     });
             // If cancelled, skip getting the blob and decoding it into a bitmap
@@ -364,7 +364,7 @@
     }
 
     /**
-     * Generates the widget preview from either the {@link AppWidgetManagerCompat} or cache
+     * Generates the widget preview from either the {@link WidgetManagerHelper} or cache
      * and add badge at the bottom right corner.
      *
      * @param launcher
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 816d710..7af979c 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -66,7 +66,6 @@
 import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper;
 import com.android.launcher3.anim.AnimatorSetBuilder;
 import com.android.launcher3.anim.Interpolators;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.dot.FolderDotInfo;
 import com.android.launcher3.dragndrop.DragController;
@@ -100,6 +99,7 @@
 import com.android.launcher3.widget.PendingAddShortcutInfo;
 import com.android.launcher3.widget.PendingAddWidgetInfo;
 import com.android.launcher3.widget.PendingAppWidgetHostView;
+import com.android.launcher3.widget.WidgetManagerHelper;
 import com.android.systemui.plugins.shared.LauncherOverlayManager.LauncherOverlay;
 
 import java.util.ArrayList;
@@ -3233,12 +3233,11 @@
 
             LauncherAppWidgetInfo item = changedInfo.get(0);
             final AppWidgetProviderInfo widgetInfo;
+            WidgetManagerHelper widgetHelper = new WidgetManagerHelper(getContext());
             if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) {
-                widgetInfo = AppWidgetManagerCompat
-                        .getInstance(mLauncher).findProvider(item.providerName, item.user);
+                widgetInfo = widgetHelper.findProvider(item.providerName, item.user);
             } else {
-                widgetInfo = AppWidgetManagerCompat.getInstance(mLauncher)
-                        .getLauncherAppWidgetInfo(item.appWidgetId);
+                widgetInfo = widgetHelper.getLauncherAppWidgetInfo(item.appWidgetId);
             }
 
             if (widgetInfo != null) {
diff --git a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
index bb21268..80ea1eb 100644
--- a/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
+++ b/src/com/android/launcher3/allapps/AllAppsGridAdapter.java
@@ -26,25 +26,25 @@
 import android.view.accessibility.AccessibilityEvent;
 import android.widget.TextView;
 
-import com.android.launcher3.AppInfo;
-import com.android.launcher3.BubbleTextView;
-import com.android.launcher3.Launcher;
-import com.android.launcher3.R;
-import com.android.launcher3.allapps.AlphabeticalAppsList.AdapterItem;
-import com.android.launcher3.compat.UserManagerCompat;
-import com.android.launcher3.model.AppLaunchTracker;
-import com.android.launcher3.touch.ItemClickHandler;
-import com.android.launcher3.touch.ItemLongClickListener;
-import com.android.launcher3.util.PackageManagerHelper;
-
-import java.util.List;
-
 import androidx.core.view.accessibility.AccessibilityEventCompat;
 import androidx.core.view.accessibility.AccessibilityNodeInfoCompat;
 import androidx.core.view.accessibility.AccessibilityRecordCompat;
 import androidx.recyclerview.widget.GridLayoutManager;
 import androidx.recyclerview.widget.RecyclerView;
 
+import com.android.launcher3.AppInfo;
+import com.android.launcher3.BubbleTextView;
+import com.android.launcher3.Launcher;
+import com.android.launcher3.R;
+import com.android.launcher3.allapps.AlphabeticalAppsList.AdapterItem;
+import com.android.launcher3.model.AppLaunchTracker;
+import com.android.launcher3.pm.UserCache;
+import com.android.launcher3.touch.ItemClickHandler;
+import com.android.launcher3.touch.ItemLongClickListener;
+import com.android.launcher3.util.PackageManagerHelper;
+
+import java.util.List;
+
 /**
  * The grid view adapter of all the apps.
  */
@@ -312,7 +312,7 @@
                 WorkModeSwitch workModeToggle = holder.itemView.findViewById(R.id.work_mode_toggle);
                 workModeToggle.refresh();
                 TextView managedByLabel = holder.itemView.findViewById(R.id.managed_by_label);
-                boolean anyProfileQuietModeEnabled = UserManagerCompat.getInstance(
+                boolean anyProfileQuietModeEnabled = UserCache.INSTANCE.get(
                         managedByLabel.getContext()).isAnyProfileQuietModeEnabled();
                 managedByLabel.setText(anyProfileQuietModeEnabled
                         ? R.string.work_mode_off_label : R.string.work_mode_on_label);
diff --git a/src/com/android/launcher3/allapps/AppInfoComparator.java b/src/com/android/launcher3/allapps/AppInfoComparator.java
index 80577a7..8baf56c 100644
--- a/src/com/android/launcher3/allapps/AppInfoComparator.java
+++ b/src/com/android/launcher3/allapps/AppInfoComparator.java
@@ -20,7 +20,7 @@
 import android.os.UserHandle;
 
 import com.android.launcher3.AppInfo;
-import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.LabelComparator;
 
 import java.util.Comparator;
@@ -30,12 +30,12 @@
  */
 public class AppInfoComparator implements Comparator<AppInfo> {
 
-    private final UserManagerCompat mUserManager;
+    private final UserCache mUserManager;
     private final UserHandle mMyUser;
     private final LabelComparator mLabelComparator;
 
     public AppInfoComparator(Context context) {
-        mUserManager = UserManagerCompat.getInstance(context);
+        mUserManager = UserCache.INSTANCE.get(context);
         mMyUser = Process.myUserHandle();
         mLabelComparator = new LabelComparator();
     }
diff --git a/src/com/android/launcher3/allapps/DiscoveryBounce.java b/src/com/android/launcher3/allapps/DiscoveryBounce.java
index dc2f7bd..e8035eb 100644
--- a/src/com/android/launcher3/allapps/DiscoveryBounce.java
+++ b/src/com/android/launcher3/allapps/DiscoveryBounce.java
@@ -26,6 +26,7 @@
 import android.animation.AnimatorListenerAdapter;
 import android.content.SharedPreferences;
 import android.os.Handler;
+import android.os.UserManager;
 import android.view.MotionEvent;
 
 import com.android.launcher3.AbstractFloatingView;
@@ -34,7 +35,7 @@
 import com.android.launcher3.LauncherStateManager.StateListener;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
-import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.pm.UserCache;
 
 /**
  * Abstract base class of floating view responsible for showing discovery bounce animation
@@ -146,7 +147,7 @@
                 || (launcher.getSharedPrefs().getBoolean(HOME_BOUNCE_SEEN, false)
                 && !shouldShowForWorkProfile(launcher))
                 || AbstractFloatingView.getTopOpenView(launcher) != null
-                || UserManagerCompat.getInstance(launcher).isDemoUser()
+                || launcher.getSystemService(UserManager.class).isDemoUser()
                 || Utilities.IS_RUNNING_IN_TEST_HARNESS) {
             return;
         }
@@ -171,7 +172,7 @@
                 || launcher.getDeviceProfile().isVerticalBarLayout()
                 || (launcher.getSharedPrefs().getBoolean(SHELF_BOUNCE_SEEN, false)
                 && !shouldShowForWorkProfile(launcher))
-                || UserManagerCompat.getInstance(launcher).isDemoUser()
+                || launcher.getSystemService(UserManager.class).isDemoUser()
                 || Utilities.IS_RUNNING_IN_TEST_HARNESS) {
             return;
         }
@@ -215,7 +216,7 @@
     private static boolean shouldShowForWorkProfile(Launcher launcher) {
         return !launcher.getSharedPrefs().getBoolean(
                 PersonalWorkSlidingTabStrip.KEY_SHOWED_PEEK_WORK_TAB, false)
-                && UserManagerCompat.getInstance(launcher).hasWorkProfile();
+                && UserCache.INSTANCE.get(launcher).hasWorkProfile();
     }
 
     private static void incrementShelfBounceCount(Launcher launcher) {
diff --git a/src/com/android/launcher3/allapps/WorkModeSwitch.java b/src/com/android/launcher3/allapps/WorkModeSwitch.java
index 717bbd4..aadb297 100644
--- a/src/com/android/launcher3/allapps/WorkModeSwitch.java
+++ b/src/com/android/launcher3/allapps/WorkModeSwitch.java
@@ -19,14 +19,15 @@
 import android.os.AsyncTask;
 import android.os.Process;
 import android.os.UserHandle;
+import android.os.UserManager;
 import android.util.AttributeSet;
 import android.view.MotionEvent;
 import android.widget.Switch;
 
-import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.pm.UserCache;
 
 import java.lang.ref.WeakReference;
-import java.util.List;
 
 public class WorkModeSwitch extends Switch {
 
@@ -57,7 +58,7 @@
     }
 
     public void refresh() {
-        UserManagerCompat userManager = UserManagerCompat.getInstance(getContext());
+        UserCache userManager = UserCache.INSTANCE.get(getContext());
         setCheckedInternal(!userManager.isAnyProfileQuietModeEnabled());
         setEnabled(true);
     }
@@ -95,14 +96,14 @@
         @Override
         protected Boolean doInBackground(Void... voids) {
             WorkModeSwitch workModeSwitch = switchWeakReference.get();
-            if (workModeSwitch == null) {
+            if (workModeSwitch == null || !Utilities.ATLEAST_P) {
                 return false;
             }
-            UserManagerCompat userManager =
-                    UserManagerCompat.getInstance(workModeSwitch.getContext());
-            List<UserHandle> userProfiles = userManager.getUserProfiles();
+
+            Context context = workModeSwitch.getContext();
+            UserManager userManager = context.getSystemService(UserManager.class);
             boolean showConfirm = false;
-            for (UserHandle userProfile : userProfiles) {
+            for (UserHandle userProfile : UserCache.INSTANCE.get(context).getUserProfiles()) {
                 if (Process.myUserHandle().equals(userProfile)) {
                     continue;
                 }
diff --git a/src/com/android/launcher3/compat/AppWidgetManagerCompat.java b/src/com/android/launcher3/compat/AppWidgetManagerCompat.java
deleted file mode 100644
index fc5d11c..0000000
--- a/src/com/android/launcher3/compat/AppWidgetManagerCompat.java
+++ /dev/null
@@ -1,82 +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.appwidget.AppWidgetManager;
-import android.appwidget.AppWidgetProviderInfo;
-import android.content.ComponentName;
-import android.content.Context;
-import android.os.Bundle;
-import android.os.UserHandle;
-
-import androidx.annotation.Nullable;
-
-import com.android.launcher3.LauncherAppWidgetInfo;
-import com.android.launcher3.LauncherAppWidgetProviderInfo;
-import com.android.launcher3.Utilities;
-import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.custom.CustomWidgetManager;
-
-import java.util.HashMap;
-import java.util.List;
-
-public abstract class AppWidgetManagerCompat {
-
-    private static final Object sInstanceLock = new Object();
-    private static AppWidgetManagerCompat sInstance;
-
-    public static AppWidgetManagerCompat getInstance(Context context) {
-        synchronized (sInstanceLock) {
-            if (sInstance == null) {
-                if (Utilities.ATLEAST_OREO) {
-                    sInstance = new AppWidgetManagerCompatVO(context.getApplicationContext());
-                } else {
-                    sInstance = new AppWidgetManagerCompatVL(context.getApplicationContext());
-                }
-            }
-            return sInstance;
-        }
-    }
-
-    final AppWidgetManager mAppWidgetManager;
-    final Context mContext;
-
-    AppWidgetManagerCompat(Context context) {
-        mContext = context;
-        mAppWidgetManager = AppWidgetManager.getInstance(context);
-    }
-
-    public LauncherAppWidgetProviderInfo getLauncherAppWidgetInfo(int appWidgetId) {
-        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
-            return CustomWidgetManager.INSTANCE.get(mContext).getWidgetProvider(appWidgetId);
-        }
-        AppWidgetProviderInfo info = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
-        return info == null ? null : LauncherAppWidgetProviderInfo.fromProviderInfo(mContext, info);
-    }
-
-    public abstract List<AppWidgetProviderInfo> getAllProviders(
-            @Nullable PackageUserKey packageUser);
-
-    public abstract boolean bindAppWidgetIdIfAllowed(
-            int appWidgetId, AppWidgetProviderInfo info, Bundle options);
-
-    public abstract LauncherAppWidgetProviderInfo findProvider(
-            ComponentName provider, UserHandle user);
-
-    public abstract HashMap<ComponentKey, AppWidgetProviderInfo> getAllProvidersMap();
-}
diff --git a/src/com/android/launcher3/compat/AppWidgetManagerCompatVL.java b/src/com/android/launcher3/compat/AppWidgetManagerCompatVL.java
deleted file mode 100644
index 8f6500b..0000000
--- a/src/com/android/launcher3/compat/AppWidgetManagerCompatVL.java
+++ /dev/null
@@ -1,138 +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.appwidget.AppWidgetProviderInfo;
-import android.content.ComponentName;
-import android.content.Context;
-import android.os.Bundle;
-import android.os.Process;
-import android.os.UserHandle;
-import android.os.UserManager;
-
-import androidx.annotation.Nullable;
-
-import com.android.launcher3.LauncherAppWidgetInfo;
-import com.android.launcher3.LauncherAppWidgetProviderInfo;
-import com.android.launcher3.model.WidgetsModel;
-import com.android.launcher3.util.ComponentKey;
-import com.android.launcher3.util.PackageUserKey;
-import com.android.launcher3.widget.custom.CustomAppWidgetProviderInfo;
-import com.android.launcher3.widget.custom.CustomWidgetManager;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-
-class AppWidgetManagerCompatVL extends AppWidgetManagerCompat {
-
-    private final UserManager mUserManager;
-
-    AppWidgetManagerCompatVL(Context context) {
-        super(context);
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
-    }
-
-    @Override
-    public List<AppWidgetProviderInfo> getAllProviders(@Nullable PackageUserKey packageUser) {
-        if (WidgetsModel.GO_DISABLE_WIDGETS) {
-            return Collections.emptyList();
-        }
-        if (packageUser == null) {
-            ArrayList<AppWidgetProviderInfo> providers = new ArrayList<>();
-            for (UserHandle user : mUserManager.getUserProfiles()) {
-                providers.addAll(mAppWidgetManager.getInstalledProvidersForProfile(user));
-            }
-            providers.addAll(getCustomWidgets());
-            return providers;
-        }
-        // Only get providers for the given package/user.
-        List<AppWidgetProviderInfo> providers = new ArrayList<>(mAppWidgetManager
-                .getInstalledProvidersForProfile(packageUser.mUser));
-        Iterator<AppWidgetProviderInfo> iterator = providers.iterator();
-        while (iterator.hasNext()) {
-            if (!iterator.next().provider.getPackageName().equals(packageUser.mPackageName)) {
-                iterator.remove();
-            }
-        }
-
-        if (Process.myUserHandle().equals(packageUser.mUser)
-                && mContext.getPackageName().equals(packageUser.mPackageName)) {
-            providers.addAll(getCustomWidgets());
-        }
-        return providers;
-    }
-
-    @Override
-    public boolean bindAppWidgetIdIfAllowed(int appWidgetId, AppWidgetProviderInfo info,
-            Bundle options) {
-        if (WidgetsModel.GO_DISABLE_WIDGETS) {
-            return false;
-        }
-        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
-            return true;
-        }
-        return mAppWidgetManager.bindAppWidgetIdIfAllowed(
-                appWidgetId, info.getProfile(), info.provider, options);
-    }
-
-    @Override
-    public LauncherAppWidgetProviderInfo findProvider(ComponentName provider, UserHandle user) {
-        if (WidgetsModel.GO_DISABLE_WIDGETS) {
-            return null;
-        }
-        for (AppWidgetProviderInfo info :
-                getAllProviders(new PackageUserKey(provider.getPackageName(), user))) {
-            if (info.provider.equals(provider)) {
-                return LauncherAppWidgetProviderInfo.fromProviderInfo(mContext, info);
-            }
-        }
-
-        if (Process.myUserHandle().equals(user)) {
-            for (LauncherAppWidgetProviderInfo info : getCustomWidgets()) {
-                if (info.provider.equals(provider)) {
-                    return info;
-                }
-            }
-        }
-        return null;
-    }
-
-    @Override
-    public HashMap<ComponentKey, AppWidgetProviderInfo> getAllProvidersMap() {
-        HashMap<ComponentKey, AppWidgetProviderInfo> result = new HashMap<>();
-        if (WidgetsModel.GO_DISABLE_WIDGETS) {
-            return result;
-        }
-        for (UserHandle user : mUserManager.getUserProfiles()) {
-            for (AppWidgetProviderInfo info :
-                    mAppWidgetManager.getInstalledProvidersForProfile(user)) {
-                result.put(new ComponentKey(info.provider, user), info);
-            }
-        }
-        for (LauncherAppWidgetProviderInfo info : getCustomWidgets()) {
-            result.put(new ComponentKey(info.provider, info.getProfile()), info);
-        }
-        return result;
-    }
-
-    List<CustomAppWidgetProviderInfo> getCustomWidgets() {
-        return CustomWidgetManager.INSTANCE.get(mContext).getCustomWidgets();
-    }
-}
diff --git a/src/com/android/launcher3/compat/AppWidgetManagerCompatVO.java b/src/com/android/launcher3/compat/AppWidgetManagerCompatVO.java
deleted file mode 100644
index 2814afc..0000000
--- a/src/com/android/launcher3/compat/AppWidgetManagerCompatVO.java
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright (C) 2017 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.appwidget.AppWidgetProviderInfo;
-import android.content.Context;
-
-import androidx.annotation.Nullable;
-
-import com.android.launcher3.model.WidgetsModel;
-import com.android.launcher3.util.PackageUserKey;
-
-import java.util.Collections;
-import java.util.List;
-
-class AppWidgetManagerCompatVO extends AppWidgetManagerCompatVL {
-
-    AppWidgetManagerCompatVO(Context context) {
-        super(context);
-    }
-
-    @Override
-    public List<AppWidgetProviderInfo> getAllProviders(@Nullable PackageUserKey packageUser) {
-        if (WidgetsModel.GO_DISABLE_WIDGETS) {
-            return Collections.emptyList();
-        }
-        if (packageUser == null) {
-            return super.getAllProviders(null);
-        }
-        return mAppWidgetManager.getInstalledProvidersForPackage(packageUser.mPackageName,
-                packageUser.mUser);
-    }
-}
diff --git a/src/com/android/launcher3/compat/UserManagerCompat.java b/src/com/android/launcher3/compat/UserManagerCompat.java
deleted file mode 100644
index 2c0088e..0000000
--- a/src/com/android/launcher3/compat/UserManagerCompat.java
+++ /dev/null
@@ -1,62 +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.Context;
-import android.os.UserHandle;
-
-import com.android.launcher3.Utilities;
-
-import java.util.List;
-
-public abstract class UserManagerCompat {
-    protected UserManagerCompat() {
-    }
-
-    private static final Object sInstanceLock = new Object();
-    private static UserManagerCompat sInstance;
-
-    public static UserManagerCompat getInstance(Context context) {
-        synchronized (sInstanceLock) {
-            if (sInstance == null) {
-                if (Utilities.ATLEAST_P) {
-                    sInstance = new UserManagerCompatVP(context.getApplicationContext());
-                } else {
-                    sInstance = new UserManagerCompatVNMr1(context.getApplicationContext());
-                }
-            }
-            return sInstance;
-        }
-    }
-
-    /**
-     * Creates a cache for users.
-     */
-    public abstract void enableAndResetCache();
-
-    public abstract List<UserHandle> getUserProfiles();
-    public abstract long getSerialNumberForUser(UserHandle user);
-    public abstract UserHandle getUserForSerialNumber(long serialNumber);
-    public abstract boolean isQuietModeEnabled(UserHandle user);
-    public abstract boolean isUserUnlocked(UserHandle user);
-
-    public abstract boolean isDemoUser();
-    public abstract boolean requestQuietModeEnabled(boolean enableQuietMode, UserHandle user);
-    public abstract boolean isAnyProfileQuietModeEnabled();
-
-    public abstract boolean hasWorkProfile();
-}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatVNMr1.java b/src/com/android/launcher3/compat/UserManagerCompatVNMr1.java
deleted file mode 100644
index 18d9053..0000000
--- a/src/com/android/launcher3/compat/UserManagerCompatVNMr1.java
+++ /dev/null
@@ -1,138 +0,0 @@
-/*
- * Copyright (C) 2016 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.os.Build;
-import android.os.Process;
-import android.os.UserHandle;
-import android.os.UserManager;
-import android.util.ArrayMap;
-import android.util.LongSparseArray;
-
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
-@TargetApi(Build.VERSION_CODES.N_MR1)
-public class UserManagerCompatVNMr1 extends UserManagerCompat {
-
-    protected final UserManager mUserManager;
-
-    protected LongSparseArray<UserHandle> mUsers;
-    // Create a separate reverse map as LongSparseArray.indexOfValue checks if objects are same
-    // and not {@link Object#equals}
-    protected ArrayMap<UserHandle, Long> mUserToSerialMap;
-
-    UserManagerCompatVNMr1(Context context) {
-        mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
-    }
-
-    @Override
-    public boolean isQuietModeEnabled(UserHandle user) {
-        return mUserManager.isQuietModeEnabled(user);
-    }
-
-    @Override
-    public boolean isUserUnlocked(UserHandle user) {
-        return mUserManager.isUserUnlocked(user);
-    }
-
-    @Override
-    public boolean isAnyProfileQuietModeEnabled() {
-        List<UserHandle> userProfiles = getUserProfiles();
-        for (UserHandle userProfile : userProfiles) {
-            if (Process.myUserHandle().equals(userProfile)) {
-                continue;
-            }
-            if (isQuietModeEnabled(userProfile)) {
-                return true;
-            }
-        }
-        return false;
-    }
-
-    @Override
-    public long getSerialNumberForUser(UserHandle user) {
-        synchronized (this) {
-            if (mUserToSerialMap != null) {
-                Long serial = mUserToSerialMap.get(user);
-                return serial == null ? 0 : serial;
-            }
-        }
-        return mUserManager.getSerialNumberForUser(user);
-    }
-
-    @Override
-    public UserHandle getUserForSerialNumber(long serialNumber) {
-        synchronized (this) {
-            if (mUsers != null) {
-                return mUsers.get(serialNumber);
-            }
-        }
-        return mUserManager.getUserForSerialNumber(serialNumber);
-    }
-
-    @Override
-    public boolean isDemoUser() {
-        return mUserManager.isDemoUser();
-    }
-
-    @Override
-    public boolean requestQuietModeEnabled(boolean enableQuietMode, UserHandle user) {
-        return false;
-    }
-
-    @Override
-    public void enableAndResetCache() {
-        synchronized (this) {
-            mUsers = new LongSparseArray<>();
-            mUserToSerialMap = new ArrayMap<>();
-            List<UserHandle> users = mUserManager.getUserProfiles();
-            if (users != null) {
-                for (UserHandle user : users) {
-                    long serial = mUserManager.getSerialNumberForUser(user);
-                    mUsers.put(serial, user);
-                    mUserToSerialMap.put(user, serial);
-                }
-            }
-        }
-    }
-
-    @Override
-    public List<UserHandle> getUserProfiles() {
-        synchronized (this) {
-            if (mUsers != null) {
-                return new ArrayList<>(mUserToSerialMap.keySet());
-            }
-        }
-
-        List<UserHandle> users = mUserManager.getUserProfiles();
-        return users == null ? Collections.<UserHandle>emptyList() : users;
-    }
-
-    @Override
-    public boolean hasWorkProfile() {
-        synchronized (this) {
-            if (mUsers != null) {
-                return mUsers.size() > 1;
-            }
-        }
-        return getUserProfiles().size() > 1;
-    }
-}
diff --git a/src/com/android/launcher3/compat/UserManagerCompatVP.java b/src/com/android/launcher3/compat/UserManagerCompatVP.java
deleted file mode 100644
index fa3902b..0000000
--- a/src/com/android/launcher3/compat/UserManagerCompatVP.java
+++ /dev/null
@@ -1,34 +0,0 @@
-/*
- * Copyright (C) 2018 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.os.Build;
-import android.os.UserHandle;
-
-@TargetApi(Build.VERSION_CODES.P)
-public class UserManagerCompatVP extends UserManagerCompatVNMr1 {
-
-    UserManagerCompatVP(Context context) {
-        super(context);
-    }
-
-    @Override
-    public boolean requestQuietModeEnabled(boolean enableQuietMode, UserHandle user) {
-        return mUserManager.requestQuietModeEnabled(enableQuietMode, user);
-    }
-}
diff --git a/src/com/android/launcher3/dragndrop/AddItemActivity.java b/src/com/android/launcher3/dragndrop/AddItemActivity.java
index 1b0567f..6c40b8a 100644
--- a/src/com/android/launcher3/dragndrop/AddItemActivity.java
+++ b/src/com/android/launcher3/dragndrop/AddItemActivity.java
@@ -50,7 +50,6 @@
 import com.android.launcher3.LauncherAppWidgetHost;
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
 import com.android.launcher3.R;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.model.WidgetItem;
 import com.android.launcher3.pm.PinRequestHelper;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
@@ -61,6 +60,7 @@
 import com.android.launcher3.widget.PendingAddWidgetInfo;
 import com.android.launcher3.widget.WidgetHostViewLoader;
 import com.android.launcher3.widget.WidgetImageView;
+import com.android.launcher3.widget.WidgetManagerHelper;
 
 import java.util.function.Supplier;
 
@@ -82,7 +82,7 @@
 
     // Widget request specific options.
     private LauncherAppWidgetHost mAppWidgetHost;
-    private AppWidgetManagerCompat mAppWidgetManager;
+    private WidgetManagerHelper mAppWidgetManager;
     private int mPendingBindWidgetId;
     private Bundle mWidgetOptions;
 
@@ -209,7 +209,7 @@
         }
         mWidgetCell.setPreview(PinItemDragListener.getPreview(mRequest));
 
-        mAppWidgetManager = AppWidgetManagerCompat.getInstance(this);
+        mAppWidgetManager = new WidgetManagerHelper(this);
         mAppWidgetHost = new LauncherAppWidgetHost(this);
 
         PendingAddWidgetInfo pendingInfo = new PendingAddWidgetInfo(widgetInfo);
diff --git a/src/com/android/launcher3/icons/IconCache.java b/src/com/android/launcher3/icons/IconCache.java
index 4ac6ff4..69b8125 100644
--- a/src/com/android/launcher3/icons/IconCache.java
+++ b/src/com/android/launcher3/icons/IconCache.java
@@ -43,13 +43,13 @@
 import com.android.launcher3.LauncherFiles;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.ComponentWithLabel.ComponentCachingLogic;
 import com.android.launcher3.icons.cache.BaseIconCache;
 import com.android.launcher3.icons.cache.CachingLogic;
 import com.android.launcher3.icons.cache.HandlerRunnable;
 import com.android.launcher3.model.PackageItemInfo;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.InstantAppResolver;
@@ -70,7 +70,7 @@
     private final CachingLogic<ShortcutInfo> mShortcutCachingLogic;
 
     private final LauncherApps mLauncherApps;
-    private final UserManagerCompat mUserManager;
+    private final UserCache mUserManager;
     private final InstantAppResolver mInstantAppResolver;
     private final IconProvider mIconProvider;
 
@@ -83,7 +83,7 @@
         mLauncherActivityInfoCachingLogic = LauncherActivityCachingLogic.newInstance(context);
         mShortcutCachingLogic = new ShortcutCachingLogic();
         mLauncherApps = mContext.getSystemService(LauncherApps.class);
-        mUserManager = UserManagerCompat.getInstance(mContext);
+        mUserManager = UserCache.INSTANCE.get(mContext);
         mInstantAppResolver = InstantAppResolver.newInstance(mContext);
         mIconProvider = new IconProvider(context);
     }
diff --git a/src/com/android/launcher3/icons/IconProvider.java b/src/com/android/launcher3/icons/IconProvider.java
index 26b7eae..1468b27 100644
--- a/src/com/android/launcher3/icons/IconProvider.java
+++ b/src/com/android/launcher3/icons/IconProvider.java
@@ -34,8 +34,8 @@
 import android.util.Log;
 
 import com.android.launcher3.R;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.icons.BitmapInfo.Extender;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.SafeCloseable;
 
@@ -235,7 +235,7 @@
             ComponentName calendar =
                     parseComponentOrNull(context, R.string.calendar_component_name);
             if (calendar != null) {
-                for (UserHandle user : UserManagerCompat.getInstance(context).getUserProfiles()) {
+                for (UserHandle user : UserCache.INSTANCE.get(context).getUserProfiles()) {
                     mCallback.accept(calendar.getPackageName(), user);
                 }
             }
diff --git a/src/com/android/launcher3/model/GridBackupTable.java b/src/com/android/launcher3/model/GridBackupTable.java
index 804a040..11d4edd 100644
--- a/src/com/android/launcher3/model/GridBackupTable.java
+++ b/src/com/android/launcher3/model/GridBackupTable.java
@@ -29,7 +29,7 @@
 
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.LauncherSettings.Settings;
-import com.android.launcher3.compat.UserManagerCompat;
+import com.android.launcher3.pm.UserCache;
 
 /**
  * Helper class to backup and restore Favorites table into a separate table
@@ -94,7 +94,7 @@
     }
 
     private void copyTable(String from, String to) {
-        long userSerial = UserManagerCompat.getInstance(mContext).getSerialNumberForUser(
+        long userSerial = UserCache.INSTANCE.get(mContext).getSerialNumberForUser(
                 Process.myUserHandle());
         dropTable(mDb, to);
         Favorites.addTableToDb(mDb, userSerial, false, to);
diff --git a/src/com/android/launcher3/model/GridSizeMigrationTask.java b/src/com/android/launcher3/model/GridSizeMigrationTask.java
index ac44b0e..8b76190 100644
--- a/src/com/android/launcher3/model/GridSizeMigrationTask.java
+++ b/src/com/android/launcher3/model/GridSizeMigrationTask.java
@@ -28,7 +28,6 @@
 import com.android.launcher3.LauncherSettings.Settings;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.Workspace;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.pm.PackageInstallerCompat;
 import com.android.launcher3.provider.LauncherDbUtils;
@@ -36,6 +35,7 @@
 import com.android.launcher3.util.GridOccupancy;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSparseArrayMap;
+import com.android.launcher3.widget.WidgetManagerHelper;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -692,6 +692,7 @@
         final int indexAppWidgetId = c.getColumnIndexOrThrow(Favorites.APPWIDGET_ID);
 
         ArrayList<DbEntry> entries = new ArrayList<>();
+        WidgetManagerHelper widgetManagerHelper = new WidgetManagerHelper(mContext);
         while (c.moveToNext()) {
             DbEntry entry = new DbEntry();
             entry.id = c.getInt(indexId);
@@ -721,8 +722,8 @@
                                 * entry.spanX * entry.spanY);
 
                         int widgetId = c.getInt(indexAppWidgetId);
-                        LauncherAppWidgetProviderInfo pInfo = AppWidgetManagerCompat.getInstance(
-                                mContext).getLauncherAppWidgetInfo(widgetId);
+                        LauncherAppWidgetProviderInfo pInfo =
+                                widgetManagerHelper.getLauncherAppWidgetInfo(widgetId);
                         Point spans = null;
                         if (pInfo != null) {
                             spans = pInfo.getMinSpans();
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 2754cfc..642edbb 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -36,6 +36,7 @@
 import android.content.pm.ShortcutInfo;
 import android.os.Process;
 import android.os.UserHandle;
+import android.os.UserManager;
 import android.text.TextUtils;
 import android.util.Log;
 import android.util.LongSparseArray;
@@ -55,8 +56,6 @@
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderGridOrganizer;
@@ -70,6 +69,7 @@
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.pm.PackageInstallInfo;
 import com.android.launcher3.pm.PackageInstallerCompat;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.provider.ImportDataTask;
 import com.android.launcher3.qsb.QsbContainerView;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
@@ -81,6 +81,7 @@
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.TraceHelper;
+import com.android.launcher3.widget.WidgetManagerHelper;
 
 import java.util.ArrayList;
 import java.util.Collections;
@@ -110,10 +111,11 @@
     private final LoaderResults mResults;
 
     private final LauncherApps mLauncherApps;
-    private final UserManagerCompat mUserManager;
+    private final UserManager mUserManager;
+    private final UserCache mUserCache;
+
     private final DeepShortcutManager mShortcutManager;
     private final PackageInstallerCompat mPackageInstaller;
-    private final AppWidgetManagerCompat mAppWidgetManager;
     private final IconCache mIconCache;
 
     private boolean mStopped;
@@ -126,10 +128,10 @@
         mResults = results;
 
         mLauncherApps = mApp.getContext().getSystemService(LauncherApps.class);
-        mUserManager = UserManagerCompat.getInstance(mApp.getContext());
+        mUserManager = mApp.getContext().getSystemService(UserManager.class);
+        mUserCache = UserCache.INSTANCE.get(mApp.getContext());
         mShortcutManager = DeepShortcutManager.getInstance(mApp.getContext());
         mPackageInstaller = PackageInstallerCompat.getInstance(mApp.getContext());
-        mAppWidgetManager = AppWidgetManagerCompat.getInstance(mApp.getContext());
         mIconCache = mApp.getIconCache();
     }
 
@@ -319,7 +321,7 @@
             final LoaderCursor c = new LoaderCursor(contentResolver.query(
                     LauncherSettings.Favorites.CONTENT_URI, null, null, null, null), mApp);
 
-            HashMap<ComponentKey, AppWidgetProviderInfo> widgetProvidersMap = null;
+            Map<ComponentKey, AppWidgetProviderInfo> widgetProvidersMap = null;
 
             try {
                 final int appWidgetIdIndex = c.getColumnIndexOrThrow(
@@ -338,8 +340,8 @@
                 final LongSparseArray<UserHandle> allUsers = c.allUsers;
                 final LongSparseArray<Boolean> quietMode = new LongSparseArray<>();
                 final LongSparseArray<Boolean> unlockedUsers = new LongSparseArray<>();
-                for (UserHandle user : mUserManager.getUserProfiles()) {
-                    long serialNo = mUserManager.getSerialNumberForUser(user);
+                for (UserHandle user : mUserCache.getUserProfiles()) {
+                    long serialNo = mUserCache.getSerialNumberForUser(user);
                     allUsers.put(serialNo, user);
                     quietMode.put(serialNo, mUserManager.isQuietModeEnabled(user));
 
@@ -634,7 +636,7 @@
                                     LauncherAppWidgetInfo.FLAG_PROVIDER_NOT_READY);
 
                             if (widgetProvidersMap == null) {
-                                widgetProvidersMap = mAppWidgetManager.getAllProvidersMap();
+                                widgetProvidersMap = WidgetManagerHelper.getAllProvidersMap(context);
                             }
                             final AppWidgetProviderInfo provider = widgetProvidersMap.get(
                                     new ComponentKey(component, c.user));
@@ -844,7 +846,7 @@
     }
 
     private List<LauncherActivityInfo> loadAllApps() {
-        final List<UserHandle> profiles = mUserManager.getUserProfiles();
+        final List<UserHandle> profiles = mUserCache.getUserProfiles();
         List<LauncherActivityInfo> allActivityList = new ArrayList<>();
         // Clear the list of apps
         mBgAllAppsList.clear();
@@ -884,7 +886,7 @@
         mBgDataModel.deepShortcutMap.clear();
         mBgDataModel.hasShortcutHostPermission = mShortcutManager.hasHostPermission();
         if (mBgDataModel.hasShortcutHostPermission) {
-            for (UserHandle user : mUserManager.getUserProfiles()) {
+            for (UserHandle user : mUserCache.getUserProfiles()) {
                 if (mUserManager.isUserUnlocked(user)) {
                     List<ShortcutInfo> shortcuts =
                             mShortcutManager.queryForAllShortcuts(user);
diff --git a/src/com/android/launcher3/model/PackageUpdatedTask.java b/src/com/android/launcher3/model/PackageUpdatedTask.java
index 1e614bd..3361ff0 100644
--- a/src/com/android/launcher3/model/PackageUpdatedTask.java
+++ b/src/com/android/launcher3/model/PackageUpdatedTask.java
@@ -25,6 +25,7 @@
 import android.content.pm.ShortcutInfo;
 import android.os.Process;
 import android.os.UserHandle;
+import android.os.UserManager;
 import android.util.Log;
 
 import com.android.launcher3.InstallShortcutReceiver;
@@ -35,7 +36,6 @@
 import com.android.launcher3.SessionCommitReceiver;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.icons.BitmapInfo;
 import com.android.launcher3.icons.IconCache;
@@ -155,7 +155,7 @@
                 appsList.updateDisabledFlags(matcher, flagOp);
                 break;
             case OP_USER_AVAILABILITY_CHANGE:
-                flagOp = UserManagerCompat.getInstance(context).isQuietModeEnabled(mUser)
+                flagOp = context.getSystemService(UserManager.class).isQuietModeEnabled(mUser)
                         ? FlagOp.addFlag(WorkspaceItemInfo.FLAG_DISABLED_QUIET_USER)
                         : FlagOp.removeFlag(WorkspaceItemInfo.FLAG_DISABLED_QUIET_USER);
                 // We want to update all packages for this user.
diff --git a/src/com/android/launcher3/model/UserLockStateChangedTask.java b/src/com/android/launcher3/model/UserLockStateChangedTask.java
index db1c307..694ae1a 100644
--- a/src/com/android/launcher3/model/UserLockStateChangedTask.java
+++ b/src/com/android/launcher3/model/UserLockStateChangedTask.java
@@ -20,12 +20,12 @@
 import android.content.Context;
 import android.content.pm.ShortcutInfo;
 import android.os.UserHandle;
+import android.os.UserManager;
 
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.icons.LauncherIcons;
 import com.android.launcher3.shortcuts.DeepShortcutManager;
 import com.android.launcher3.shortcuts.ShortcutKey;
@@ -51,7 +51,7 @@
     @Override
     public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
         Context context = app.getContext();
-        boolean isUserUnlocked = UserManagerCompat.getInstance(context).isUserUnlocked(mUser);
+        boolean isUserUnlocked = context.getSystemService(UserManager.class).isUserUnlocked(mUser);
         DeepShortcutManager deepShortcutManager = DeepShortcutManager.getInstance(context);
 
         HashMap<ShortcutKey, ShortcutInfo> pinnedShortcuts = new HashMap<>();
diff --git a/src/com/android/launcher3/pm/ShortcutConfigActivityInfo.java b/src/com/android/launcher3/pm/ShortcutConfigActivityInfo.java
index 0922e41..b563171 100644
--- a/src/com/android/launcher3/pm/ShortcutConfigActivityInfo.java
+++ b/src/com/android/launcher3/pm/ShortcutConfigActivityInfo.java
@@ -41,7 +41,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.icons.ComponentWithLabel;
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.util.PackageUserKey;
@@ -179,7 +178,7 @@
             final List<UserHandle> users;
             final String packageName;
             if (packageUser == null) {
-                users = UserManagerCompat.getInstance(context).getUserProfiles();
+                users = UserCache.INSTANCE.get(context).getUserProfiles();
                 packageName = null;
             } else {
                 users = new ArrayList<>(1);
diff --git a/src/com/android/launcher3/pm/UserCache.java b/src/com/android/launcher3/pm/UserCache.java
new file mode 100644
index 0000000..678b647
--- /dev/null
+++ b/src/com/android/launcher3/pm/UserCache.java
@@ -0,0 +1,175 @@
+/*
+ * 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 android.content.Context;
+import android.content.Intent;
+import android.os.Process;
+import android.os.UserHandle;
+import android.os.UserManager;
+import android.util.ArrayMap;
+import android.util.LongSparseArray;
+
+import com.android.launcher3.util.MainThreadInitializedObject;
+import com.android.launcher3.util.SafeCloseable;
+import com.android.launcher3.util.SimpleBroadcastReceiver;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Class which manages a local cache of user handles to avoid system rpc
+ */
+public class UserCache {
+
+    public static final MainThreadInitializedObject<UserCache> INSTANCE =
+            new MainThreadInitializedObject<>(UserCache::new);
+
+    private final Context mContext;
+    private final UserManager mUserManager;
+    private final ArrayList<Runnable> mUserChangeListeners = new ArrayList<>();
+    private final SimpleBroadcastReceiver mUserChangeReceiver =
+            new SimpleBroadcastReceiver(this::onUsersChanged);
+
+    private LongSparseArray<UserHandle> mUsers;
+    // Create a separate reverse map as LongSparseArray.indexOfValue checks if objects are same
+    // and not {@link Object#equals}
+    private ArrayMap<UserHandle, Long> mUserToSerialMap;
+
+    private UserCache(Context context) {
+        mContext = context;
+        mUserManager = context.getSystemService(UserManager.class);
+    }
+
+    private void onUsersChanged(Intent intent) {
+        enableAndResetCache();
+        mUserChangeListeners.forEach(Runnable::run);
+    }
+
+    /**
+     * Adds a listener for user additions and removals
+     */
+    public SafeCloseable addUserChangeListener(Runnable command) {
+        synchronized (this) {
+            if (mUserChangeListeners.isEmpty()) {
+                // Enable caching and start listening for user broadcast
+                mUserChangeReceiver.register(mContext,
+                        Intent.ACTION_MANAGED_PROFILE_ADDED,
+                        Intent.ACTION_MANAGED_PROFILE_REMOVED);
+                enableAndResetCache();
+            }
+            mUserChangeListeners.add(command);
+            return () -> removeUserChangeListener(command);
+        }
+    }
+
+    private void enableAndResetCache() {
+        synchronized (this) {
+            mUsers = new LongSparseArray<>();
+            mUserToSerialMap = new ArrayMap<>();
+            List<UserHandle> users = mUserManager.getUserProfiles();
+            if (users != null) {
+                for (UserHandle user : users) {
+                    long serial = mUserManager.getSerialNumberForUser(user);
+                    mUsers.put(serial, user);
+                    mUserToSerialMap.put(user, serial);
+                }
+            }
+        }
+    }
+
+    private void removeUserChangeListener(Runnable command) {
+        synchronized (this) {
+            mUserChangeListeners.add(command);
+            if (mUserChangeListeners.isEmpty()) {
+                // Disable cache and stop listening
+                mContext.unregisterReceiver(mUserChangeReceiver);
+
+                mUsers = null;
+                mUserToSerialMap = null;
+            }
+        }
+    }
+
+    /**
+     * Returns true if any user profile has quiet mode enabled.
+     */
+    public boolean isAnyProfileQuietModeEnabled() {
+        List<UserHandle> userProfiles = getUserProfiles();
+        for (UserHandle userProfile : userProfiles) {
+            if (Process.myUserHandle().equals(userProfile)) {
+                continue;
+            }
+            if (mUserManager.isQuietModeEnabled(userProfile)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    /**
+     * @see UserManager#getSerialNumberForUser(UserHandle)
+     */
+    public long getSerialNumberForUser(UserHandle user) {
+        synchronized (this) {
+            if (mUserToSerialMap != null) {
+                Long serial = mUserToSerialMap.get(user);
+                return serial == null ? 0 : serial;
+            }
+        }
+        return mUserManager.getSerialNumberForUser(user);
+    }
+
+    /**
+     * @see UserManager#getUserForSerialNumber(long)
+     */
+    public UserHandle getUserForSerialNumber(long serialNumber) {
+        synchronized (this) {
+            if (mUsers != null) {
+                return mUsers.get(serialNumber);
+            }
+        }
+        return mUserManager.getUserForSerialNumber(serialNumber);
+    }
+
+    /**
+     * @see UserManager#getUserProfiles()
+     */
+    public List<UserHandle> getUserProfiles() {
+        synchronized (this) {
+            if (mUsers != null) {
+                return new ArrayList<>(mUserToSerialMap.keySet());
+            }
+        }
+
+        List<UserHandle> users = mUserManager.getUserProfiles();
+        return users == null ? Collections.emptyList() : users;
+    }
+
+    /**
+     * Returns true is there is at least one user profile enabled
+     */
+    public boolean hasWorkProfile() {
+        synchronized (this) {
+            if (mUsers != null) {
+                return mUsers.size() > 1;
+            }
+        }
+        return getUserProfiles().size() > 1;
+    }
+}
diff --git a/src/com/android/launcher3/provider/ImportDataTask.java b/src/com/android/launcher3/provider/ImportDataTask.java
index 970a03e..732fb0b 100644
--- a/src/com/android/launcher3/provider/ImportDataTask.java
+++ b/src/com/android/launcher3/provider/ImportDataTask.java
@@ -43,10 +43,10 @@
 import com.android.launcher3.LauncherSettings.Favorites;
 import com.android.launcher3.LauncherSettings.Settings;
 import com.android.launcher3.Workspace;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logging.FileLog;
 import com.android.launcher3.model.GridSizeMigrationTask;
+import com.android.launcher3.pm.UserCache;
 import com.android.launcher3.util.IntArray;
 import com.android.launcher3.util.IntSparseArrayMap;
 import com.android.launcher3.util.PackageManagerHelper;
@@ -100,7 +100,7 @@
      * 3) In the end fills any holes in hotseat with items from default hotseat layout.
      */
     private void importWorkspaceItems() throws Exception {
-        String profileId = Long.toString(UserManagerCompat.getInstance(mContext)
+        String profileId = Long.toString(UserCache.INSTANCE.get(mContext)
                 .getSerialNumberForUser(Process.myUserHandle()));
 
         boolean createEmptyRowOnFirstScreen;
diff --git a/src/com/android/launcher3/qsb/QsbContainerView.java b/src/com/android/launcher3/qsb/QsbContainerView.java
index 0eb4285..289e0d8 100644
--- a/src/com/android/launcher3/qsb/QsbContainerView.java
+++ b/src/com/android/launcher3/qsb/QsbContainerView.java
@@ -54,7 +54,7 @@
  * A frame layout which contains a QSB. This internally uses fragment to bind the view, which
  * allows it to contain the logic for {@link Fragment#startActivityForResult(Intent, int)}.
  *
- * Note: AppWidgetManagerCompat can be disabled using FeatureFlags. In QSB, we should use
+ * Note: WidgetManagerHelper can be disabled using FeatureFlags. In QSB, we should use
  * AppWidgetManager directly, so that it keeps working in that case.
  */
 public class QsbContainerView extends FrameLayout {
diff --git a/src/com/android/launcher3/touch/ItemClickHandler.java b/src/com/android/launcher3/touch/ItemClickHandler.java
index 455af5a..7e65840 100644
--- a/src/com/android/launcher3/touch/ItemClickHandler.java
+++ b/src/com/android/launcher3/touch/ItemClickHandler.java
@@ -49,7 +49,6 @@
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
 import com.android.launcher3.WorkspaceItemInfo;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.folder.Folder;
 import com.android.launcher3.folder.FolderIcon;
 import com.android.launcher3.pm.PackageInstallerCompat;
@@ -57,6 +56,7 @@
 import com.android.launcher3.views.FloatingIconView;
 import com.android.launcher3.widget.PendingAppWidgetHostView;
 import com.android.launcher3.widget.WidgetAddFlowHandler;
+import com.android.launcher3.widget.WidgetManagerHelper;
 
 /**
  * Class for handling clicks on workspace and all-apps items
@@ -123,8 +123,8 @@
 
         final LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
         if (v.isReadyForClickSetup()) {
-            LauncherAppWidgetProviderInfo appWidgetInfo = AppWidgetManagerCompat
-                    .getInstance(launcher).findProvider(info.providerName, info.user);
+            LauncherAppWidgetProviderInfo appWidgetInfo = new WidgetManagerHelper(launcher)
+                    .findProvider(info.providerName, info.user);
             if (appWidgetInfo == null) {
                 return;
             }
diff --git a/src/com/android/launcher3/util/ContentWriter.java b/src/com/android/launcher3/util/ContentWriter.java
index 2d64353..30c9ff9 100644
--- a/src/com/android/launcher3/util/ContentWriter.java
+++ b/src/com/android/launcher3/util/ContentWriter.java
@@ -19,15 +19,14 @@
 import android.content.ContentValues;
 import android.content.Context;
 import android.content.Intent;
-import android.graphics.Bitmap;
 import android.net.Uri;
 import android.os.UserHandle;
 
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherSettings;
-import com.android.launcher3.compat.UserManagerCompat;
 import com.android.launcher3.icons.BitmapInfo;
 import com.android.launcher3.icons.GraphicsUtils;
+import com.android.launcher3.pm.UserCache;
 
 /**
  * A wrapper around {@link ContentValues} with some utility methods.
@@ -87,7 +86,7 @@
     }
 
     public ContentWriter put(String key, UserHandle user) {
-        return put(key, UserManagerCompat.getInstance(mContext).getSerialNumberForUser(user));
+        return put(key, UserCache.INSTANCE.get(mContext).getSerialNumberForUser(user));
     }
 
     /**
diff --git a/src/com/android/launcher3/widget/WidgetHostViewLoader.java b/src/com/android/launcher3/widget/WidgetHostViewLoader.java
index 8dcdd44..c022374 100644
--- a/src/com/android/launcher3/widget/WidgetHostViewLoader.java
+++ b/src/com/android/launcher3/widget/WidgetHostViewLoader.java
@@ -13,7 +13,6 @@
 import com.android.launcher3.DropTarget;
 import com.android.launcher3.Launcher;
 import com.android.launcher3.LauncherAppWidgetProviderInfo;
-import com.android.launcher3.compat.AppWidgetManagerCompat;
 import com.android.launcher3.dragndrop.DragController;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.dragndrop.DragOptions;
@@ -103,7 +102,7 @@
                 if (LOGD) {
                     Log.d(TAG, "Binding widget, id: " + mWidgetLoadingId);
                 }
-                if(AppWidgetManagerCompat.getInstance(mLauncher).bindAppWidgetIdIfAllowed(
+                if (new WidgetManagerHelper(mLauncher).bindAppWidgetIdIfAllowed(
                         mWidgetLoadingId, pInfo, options)) {
 
                     // Widget id bound. Inflate the widget.
diff --git a/src/com/android/launcher3/widget/WidgetManagerHelper.java b/src/com/android/launcher3/widget/WidgetManagerHelper.java
new file mode 100644
index 0000000..8b08d77
--- /dev/null
+++ b/src/com/android/launcher3/widget/WidgetManagerHelper.java
@@ -0,0 +1,148 @@
+/*
+ * 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.widget;
+
+import android.annotation.TargetApi;
+import android.appwidget.AppWidgetManager;
+import android.appwidget.AppWidgetProviderInfo;
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Process;
+import android.os.UserHandle;
+
+import androidx.annotation.Nullable;
+
+import com.android.launcher3.LauncherAppWidgetInfo;
+import com.android.launcher3.LauncherAppWidgetProviderInfo;
+import com.android.launcher3.Utilities;
+import com.android.launcher3.model.WidgetsModel;
+import com.android.launcher3.pm.UserCache;
+import com.android.launcher3.util.ComponentKey;
+import com.android.launcher3.util.PackageUserKey;
+import com.android.launcher3.widget.custom.CustomWidgetManager;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+/**
+ * Utility class to working with {@link AppWidgetManager}
+ */
+public class WidgetManagerHelper {
+
+    final AppWidgetManager mAppWidgetManager;
+    final Context mContext;
+
+    public WidgetManagerHelper(Context context) {
+        mContext = context;
+        mAppWidgetManager = AppWidgetManager.getInstance(context);
+    }
+
+    /**
+     * @see AppWidgetManager#getAppWidgetInfo(int)
+     */
+    public LauncherAppWidgetProviderInfo getLauncherAppWidgetInfo(int appWidgetId) {
+        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
+            return CustomWidgetManager.INSTANCE.get(mContext).getWidgetProvider(appWidgetId);
+        }
+        AppWidgetProviderInfo info = mAppWidgetManager.getAppWidgetInfo(appWidgetId);
+        return info == null ? null : LauncherAppWidgetProviderInfo.fromProviderInfo(mContext, info);
+    }
+
+    /**
+     * @see AppWidgetManager#getInstalledProvidersForPackage(String, UserHandle)
+     */
+    @TargetApi(Build.VERSION_CODES.O)
+    public List<AppWidgetProviderInfo> getAllProviders(@Nullable PackageUserKey packageUser) {
+        if (WidgetsModel.GO_DISABLE_WIDGETS) {
+            return Collections.emptyList();
+        }
+
+        if (packageUser == null) {
+            return allWidgetsSteam(mContext).collect(Collectors.toList());
+        }
+
+        if (Utilities.ATLEAST_OREO) {
+            return mAppWidgetManager.getInstalledProvidersForPackage(
+                    packageUser.mPackageName, packageUser.mUser);
+        }
+
+        String pkg = packageUser.mPackageName;
+        return Stream.concat(
+                // Only get providers for the given package/user.
+                mAppWidgetManager.getInstalledProvidersForProfile(packageUser.mUser)
+                        .stream()
+                        .filter(w -> w.provider.equals(pkg)),
+                Process.myUserHandle().equals(packageUser.mUser)
+                        && mContext.getPackageName().equals(pkg)
+                        ? CustomWidgetManager.INSTANCE.get(mContext).stream()
+                        : Stream.empty())
+                .collect(Collectors.toList());
+    }
+
+    /**
+     * @see AppWidgetManager#bindAppWidgetIdIfAllowed(int, UserHandle, ComponentName, Bundle)
+     */
+    public boolean bindAppWidgetIdIfAllowed(int appWidgetId, AppWidgetProviderInfo info,
+            Bundle options) {
+        if (WidgetsModel.GO_DISABLE_WIDGETS) {
+            return false;
+        }
+        if (appWidgetId <= LauncherAppWidgetInfo.CUSTOM_WIDGET_ID) {
+            return true;
+        }
+        return mAppWidgetManager.bindAppWidgetIdIfAllowed(
+                appWidgetId, info.getProfile(), info.provider, options);
+    }
+
+    public LauncherAppWidgetProviderInfo findProvider(ComponentName provider, UserHandle user) {
+        if (WidgetsModel.GO_DISABLE_WIDGETS) {
+            return null;
+        }
+        for (AppWidgetProviderInfo info :
+                getAllProviders(new PackageUserKey(provider.getPackageName(), user))) {
+            if (info.provider.equals(provider)) {
+                return LauncherAppWidgetProviderInfo.fromProviderInfo(mContext, info);
+            }
+        }
+        return null;
+    }
+
+    public static Map<ComponentKey, AppWidgetProviderInfo> getAllProvidersMap(Context context) {
+        if (WidgetsModel.GO_DISABLE_WIDGETS) {
+            return Collections.emptyMap();
+        }
+        return allWidgetsSteam(context).collect(
+                        Collectors.toMap(info -> new ComponentKey(info.provider, info.getProfile()),
+                        Function.identity()));
+    }
+
+    private static Stream<AppWidgetProviderInfo> allWidgetsSteam(Context context) {
+        AppWidgetManager awm = context.getSystemService(AppWidgetManager.class);
+        return Stream.concat(
+                UserCache.INSTANCE.get(context)
+                        .getUserProfiles()
+                        .stream()
+                        .flatMap(u -> awm.getInstalledProvidersForProfile(u).stream()),
+                CustomWidgetManager.INSTANCE.get(context).stream());
+    }
+}
diff --git a/src/com/android/launcher3/widget/custom/CustomWidgetManager.java b/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
index b3569f2..2aed936 100644
--- a/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
+++ b/src/com/android/launcher3/widget/custom/CustomWidgetManager.java
@@ -41,6 +41,7 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.function.Consumer;
+import java.util.stream.Stream;
 
 /**
  * CustomWidgetManager handles custom widgets implemented as a plugin.
@@ -112,11 +113,11 @@
     }
 
     /**
-     * Returns the list of custom widgets.
+     * Returns the stream of custom widgets.
      */
     @NonNull
-    public List<CustomAppWidgetProviderInfo> getCustomWidgets() {
-        return mCustomWidgets;
+    public Stream<CustomAppWidgetProviderInfo> stream() {
+        return mCustomWidgets.stream();
     }
 
     /**