diff --git a/src/com/android/launcher3/model/FirstScreenBroadcast.java b/src/com/android/launcher3/model/FirstScreenBroadcast.java
index 5112304..70d1b48 100644
--- a/src/com/android/launcher3/model/FirstScreenBroadcast.java
+++ b/src/com/android/launcher3/model/FirstScreenBroadcast.java
@@ -17,25 +17,30 @@
 
 import static android.os.Process.myUserHandle;
 
+import static com.android.launcher3.pm.InstallSessionHelper.getUserHandle;
+
+import static java.util.stream.Collectors.groupingBy;
+import static java.util.stream.Collectors.mapping;
+
 import android.app.PendingIntent;
 import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageInstaller.SessionInfo;
+import android.os.UserHandle;
 import android.util.Log;
 
 import com.android.launcher3.LauncherSettings;
 import com.android.launcher3.model.data.FolderInfo;
 import com.android.launcher3.model.data.ItemInfo;
 import com.android.launcher3.model.data.LauncherAppWidgetInfo;
-import com.android.launcher3.util.MultiHashMap;
 import com.android.launcher3.util.PackageUserKey;
 
 import java.util.ArrayList;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Map;
 import java.util.Set;
+import java.util.stream.Collectors;
 
 /**
  * Helper class to send broadcasts to package installers that have:
@@ -61,26 +66,10 @@
 
     private static final String VERIFICATION_TOKEN_EXTRA = "verificationToken";
 
-    private final MultiHashMap<String, String> mPackagesForInstaller;
+    private final HashMap<PackageUserKey, SessionInfo> mSessionInfoForPackage;
 
     public FirstScreenBroadcast(HashMap<PackageUserKey, SessionInfo> sessionInfoForPackage) {
-        mPackagesForInstaller = getPackagesForInstaller(sessionInfoForPackage);
-    }
-
-    /**
-     * @return Map where the key is the package name of the installer, and the value is a list
-     *         of packages with active sessions for that installer.
-     */
-    private MultiHashMap<String, String> getPackagesForInstaller(
-            HashMap<PackageUserKey, SessionInfo> sessionInfoForPackage) {
-        MultiHashMap<String, String> packagesForInstaller = new MultiHashMap<>();
-        for (Map.Entry<PackageUserKey, SessionInfo> entry : sessionInfoForPackage.entrySet()) {
-            if (myUserHandle().equals(entry.getKey().mUser)) {
-                packagesForInstaller.addToList(entry.getValue().getInstallerPackageName(),
-                        entry.getKey().mPackageName);
-            }
-        }
-        return packagesForInstaller;
+        mSessionInfoForPackage = sessionInfoForPackage;
     }
 
     /**
@@ -88,9 +77,15 @@
      * first screen.
      */
     public void sendBroadcasts(Context context, List<ItemInfo> firstScreenItems) {
-        for (Map.Entry<String, ArrayList<String>> entry : mPackagesForInstaller.entrySet()) {
-            sendBroadcastToInstaller(context, entry.getKey(), entry.getValue(), firstScreenItems);
-        }
+        UserHandle myUser = myUserHandle();
+        mSessionInfoForPackage
+                .values()
+                .stream()
+                .filter(info -> myUser.equals(getUserHandle(info)))
+                .collect(groupingBy(SessionInfo::getInstallerPackageName,
+                        mapping(SessionInfo::getAppPackageName, Collectors.toSet())))
+                .forEach((installer, packages) ->
+                    sendBroadcastToInstaller(context, installer, packages, firstScreenItems));
     }
 
     /**
@@ -99,7 +94,7 @@
      * @param firstScreenItems List of items on the first screen.
      */
     private void sendBroadcastToInstaller(Context context, String installerPackageName,
-            List<String> packages, List<ItemInfo> firstScreenItems) {
+            Set<String> packages, List<ItemInfo> firstScreenItems) {
         Set<String> folderItems = new HashSet<>();
         Set<String> workspaceItems = new HashSet<>();
         Set<String> hotseatItems = new HashSet<>();
diff --git a/src/com/android/launcher3/model/LoaderTask.java b/src/com/android/launcher3/model/LoaderTask.java
index 983ec0c..a9e385f 100644
--- a/src/com/android/launcher3/model/LoaderTask.java
+++ b/src/com/android/launcher3/model/LoaderTask.java
@@ -81,7 +81,6 @@
 import com.android.launcher3.util.ComponentKey;
 import com.android.launcher3.util.IOUtils;
 import com.android.launcher3.util.LooperIdleLock;
-import com.android.launcher3.util.MultiHashMap;
 import com.android.launcher3.util.PackageManagerHelper;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.TraceHelper;
@@ -90,8 +89,10 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.concurrent.CancellationException;
 
 /**
@@ -302,7 +303,7 @@
         final PackageManagerHelper pmHelper = new PackageManagerHelper(context);
         final boolean isSafeMode = pmHelper.isSafeMode();
         final boolean isSdCardReady = Utilities.isBootCompleted();
-        final MultiHashMap<UserHandle, String> pendingPackages = new MultiHashMap<>();
+        final Set<PackageUserKey> pendingPackages = new HashSet<>();
 
         boolean clearDb = false;
         try {
@@ -483,7 +484,7 @@
                                     // SdCard is not ready yet. Package might get available,
                                     // once it is ready.
                                     Log.d(TAG, "Missing pkg, will check later: " + targetPkg);
-                                    pendingPackages.addToList(c.user, targetPkg);
+                                    pendingPackages.add(new PackageUserKey(targetPkg, c.user));
                                     // Add the icon on the workspace anyway.
                                     allowMissingTarget = true;
                                 } else {
diff --git a/src/com/android/launcher3/model/ModelUtils.java b/src/com/android/launcher3/model/ModelUtils.java
index a8cc9ad..9b5fac8 100644
--- a/src/com/android/launcher3/model/ModelUtils.java
+++ b/src/com/android/launcher3/model/ModelUtils.java
@@ -36,8 +36,8 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
+import java.util.Objects;
 import java.util.stream.IntStream;
 
 /**
@@ -56,13 +56,7 @@
             ArrayList<T> currentScreenItems,
             ArrayList<T> otherScreenItems) {
         // Purge any null ItemInfos
-        Iterator<T> iter = allWorkspaceItems.iterator();
-        while (iter.hasNext()) {
-            ItemInfo i = iter.next();
-            if (i == null) {
-                iter.remove();
-            }
-        }
+        allWorkspaceItems.removeIf(Objects::isNull);
         // Order the set of items by their containers first, this allows use to walk through the
         // list sequentially, build up a list of containers that are in the specified screen,
         // as well as all items in those containers.
diff --git a/src/com/android/launcher3/model/SdCardAvailableReceiver.java b/src/com/android/launcher3/model/SdCardAvailableReceiver.java
index eb3cb52..3798575 100644
--- a/src/com/android/launcher3/model/SdCardAvailableReceiver.java
+++ b/src/com/android/launcher3/model/SdCardAvailableReceiver.java
@@ -24,12 +24,11 @@
 
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherModel;
-import com.android.launcher3.util.MultiHashMap;
 import com.android.launcher3.util.PackageManagerHelper;
+import com.android.launcher3.util.PackageUserKey;
 
 import java.util.ArrayList;
-import java.util.HashSet;
-import java.util.Map.Entry;
+import java.util.Set;
 
 /**
  * Helper class to re-query app status when SD-card becomes available.
@@ -42,10 +41,9 @@
 
     private final LauncherModel mModel;
     private final Context mContext;
-    private final MultiHashMap<UserHandle, String> mPackages;
+    private final Set<PackageUserKey> mPackages;
 
-    public SdCardAvailableReceiver(LauncherAppState app,
-            MultiHashMap<UserHandle, String> packages) {
+    public SdCardAvailableReceiver(LauncherAppState app, Set<PackageUserKey> packages) {
         mModel = app.getModel();
         mContext = app.getContext();
         mPackages = packages;
@@ -55,19 +53,17 @@
     public void onReceive(Context context, Intent intent) {
         final LauncherApps launcherApps = context.getSystemService(LauncherApps.class);
         final PackageManagerHelper pmHelper = new PackageManagerHelper(context);
-        for (Entry<UserHandle, ArrayList<String>> entry : mPackages.entrySet()) {
-            UserHandle user = entry.getKey();
+        for (PackageUserKey puk : mPackages) {
+            UserHandle user = puk.mUser;
 
             final ArrayList<String> packagesRemoved = new ArrayList<>();
             final ArrayList<String> packagesUnavailable = new ArrayList<>();
 
-            for (String pkg : new HashSet<>(entry.getValue())) {
-                if (!launcherApps.isPackageEnabled(pkg, user)) {
-                    if (pmHelper.isAppOnSdcard(pkg, user)) {
-                        packagesUnavailable.add(pkg);
-                    } else {
-                        packagesRemoved.add(pkg);
-                    }
+            if (!launcherApps.isPackageEnabled(puk.mPackageName, user)) {
+                if (pmHelper.isAppOnSdcard(puk.mPackageName, user)) {
+                    packagesUnavailable.add(puk.mPackageName);
+                } else {
+                    packagesRemoved.add(puk.mPackageName);
                 }
             }
             if (!packagesRemoved.isEmpty()) {
diff --git a/src/com/android/launcher3/model/ShortcutsChangedTask.java b/src/com/android/launcher3/model/ShortcutsChangedTask.java
index 88006ba..6fedad1 100644
--- a/src/com/android/launcher3/model/ShortcutsChangedTask.java
+++ b/src/com/android/launcher3/model/ShortcutsChangedTask.java
@@ -25,11 +25,12 @@
 import com.android.launcher3.shortcuts.ShortcutKey;
 import com.android.launcher3.shortcuts.ShortcutRequest;
 import com.android.launcher3.util.ItemInfoMatcher;
-import com.android.launcher3.util.MultiHashMap;
 
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Set;
+import java.util.stream.Collectors;
 
 /**
  * Handles changes due to shortcut manager updates (deep shortcut changes)
@@ -53,54 +54,53 @@
     public void execute(LauncherAppState app, BgDataModel dataModel, AllAppsList apps) {
         final Context context = app.getContext();
         // Find WorkspaceItemInfo's that have changed on the workspace.
-        HashSet<ShortcutKey> removedKeys = new HashSet<>();
-        MultiHashMap<ShortcutKey, WorkspaceItemInfo> keyToShortcutInfo = new MultiHashMap<>();
-        HashSet<String> allIds = new HashSet<>();
+        ArrayList<WorkspaceItemInfo> matchingWorkspaceItems = new ArrayList<>();
 
         synchronized (dataModel) {
             dataModel.forAllWorkspaceItemInfos(mUser, si -> {
                 if ((si.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT)
                         && mPackageName.equals(si.getIntent().getPackage())) {
-                    keyToShortcutInfo.addToList(ShortcutKey.fromItemInfo(si), si);
-                    allIds.add(si.getDeepShortcutId());
+                    matchingWorkspaceItems.add(si);
                 }
             });
         }
 
-        final ArrayList<WorkspaceItemInfo> updatedWorkspaceItemInfos = new ArrayList<>();
-        if (!keyToShortcutInfo.isEmpty()) {
+        if (!matchingWorkspaceItems.isEmpty()) {
             // Update the workspace to reflect the changes to updated shortcuts residing on it.
+            List<String> allLauncherKnownIds = matchingWorkspaceItems.stream()
+                    .map(WorkspaceItemInfo::getDeepShortcutId)
+                    .distinct()
+                    .collect(Collectors.toList());
             List<ShortcutInfo> shortcuts = new ShortcutRequest(context, mUser)
-                    .forPackage(mPackageName, new ArrayList<>(allIds))
+                    .forPackage(mPackageName, allLauncherKnownIds)
                     .query(ShortcutRequest.ALL);
+
+            Set<String> nonPinnedIds = new HashSet<>(allLauncherKnownIds);
+            ArrayList<WorkspaceItemInfo> updatedWorkspaceItemInfos = new ArrayList<>();
             for (ShortcutInfo fullDetails : shortcuts) {
-                ShortcutKey key = ShortcutKey.fromInfo(fullDetails);
-                List<WorkspaceItemInfo> workspaceItemInfos = keyToShortcutInfo.remove(key);
                 if (!fullDetails.isPinned()) {
-                    // The shortcut was previously pinned but is no longer, so remove it from
-                    // the workspace and our pinned shortcut counts.
-                    // Note that we put this check here, after querying for full details,
-                    // because there's a possible race condition between pinning and
-                    // receiving this callback.
-                    removedKeys.add(key);
                     continue;
                 }
-                for (final WorkspaceItemInfo workspaceItemInfo : workspaceItemInfos) {
-                    workspaceItemInfo.updateFromDeepShortcutInfo(fullDetails, context);
-                    app.getIconCache().getShortcutIcon(workspaceItemInfo, fullDetails);
-                    updatedWorkspaceItemInfos.add(workspaceItemInfo);
-                }
+
+                String sid = fullDetails.getId();
+                nonPinnedIds.remove(sid);
+                matchingWorkspaceItems
+                        .stream()
+                        .filter(itemInfo -> sid.equals(itemInfo.getDeepShortcutId()))
+                        .forEach(workspaceItemInfo -> {
+                            workspaceItemInfo.updateFromDeepShortcutInfo(fullDetails, context);
+                            app.getIconCache().getShortcutIcon(workspaceItemInfo, fullDetails);
+                            updatedWorkspaceItemInfos.add(workspaceItemInfo);
+                        });
             }
-        }
 
-        // If there are still entries in keyToShortcutInfo, that means that
-        // the corresponding shortcuts weren't passed in onShortcutsChanged(). This
-        // means they were cleared, so we remove and unpin them now.
-        removedKeys.addAll(keyToShortcutInfo.keySet());
-
-        bindUpdatedWorkspaceItems(updatedWorkspaceItemInfos);
-        if (!keyToShortcutInfo.isEmpty()) {
-            deleteAndBindComponentsRemoved(ItemInfoMatcher.ofShortcutKeys(removedKeys));
+            bindUpdatedWorkspaceItems(updatedWorkspaceItemInfos);
+            if (!nonPinnedIds.isEmpty()) {
+                deleteAndBindComponentsRemoved(ItemInfoMatcher.ofShortcutKeys(
+                        nonPinnedIds.stream()
+                                .map(id -> new ShortcutKey(mPackageName, mUser, id))
+                                .collect(Collectors.toSet())));
+            }
         }
 
         if (mUpdateIdMap) {
diff --git a/src/com/android/launcher3/popup/PopupDataProvider.java b/src/com/android/launcher3/popup/PopupDataProvider.java
index 5a5f668..76048ba 100644
--- a/src/com/android/launcher3/popup/PopupDataProvider.java
+++ b/src/com/android/launcher3/popup/PopupDataProvider.java
@@ -38,7 +38,6 @@
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.function.Consumer;
@@ -202,20 +201,11 @@
     }
 
     public List<WidgetItem> getWidgetsForPackageUser(PackageUserKey packageUserKey) {
-        for (WidgetListRowEntry entry : mAllWidgets) {
-            if (entry.pkgItem.packageName.equals(packageUserKey.mPackageName)) {
-                ArrayList<WidgetItem> widgets = new ArrayList<>(entry.widgets);
-                // Remove widgets not associated with the correct user.
-                Iterator<WidgetItem> iterator = widgets.iterator();
-                while (iterator.hasNext()) {
-                    if (!iterator.next().user.equals(packageUserKey.mUser)) {
-                        iterator.remove();
-                    }
-                }
-                return widgets.isEmpty() ? null : widgets;
-            }
-        }
-        return null;
+        return mAllWidgets.stream()
+                .filter(row -> row.pkgItem.packageName.equals(packageUserKey.mPackageName))
+                .flatMap(row -> row.widgets.stream())
+                .filter(widget -> packageUserKey.mUser.equals(widget.user))
+                .collect(Collectors.toList());
     }
 
     /**
diff --git a/src/com/android/launcher3/popup/SystemShortcut.java b/src/com/android/launcher3/popup/SystemShortcut.java
index 7998488..81302ac 100644
--- a/src/com/android/launcher3/popup/SystemShortcut.java
+++ b/src/com/android/launcher3/popup/SystemShortcut.java
@@ -99,7 +99,7 @@
         final List<WidgetItem> widgets =
                 launcher.getPopupDataProvider().getWidgetsForPackageUser(new PackageUserKey(
                         itemInfo.getTargetComponent().getPackageName(), itemInfo.user));
-        if (widgets == null) {
+        if (widgets.isEmpty()) {
             return null;
         }
         return new Widgets(launcher, itemInfo);
diff --git a/src/com/android/launcher3/util/ItemInfoMatcher.java b/src/com/android/launcher3/util/ItemInfoMatcher.java
index e98af35..d26bb57 100644
--- a/src/com/android/launcher3/util/ItemInfoMatcher.java
+++ b/src/com/android/launcher3/util/ItemInfoMatcher.java
@@ -27,6 +27,7 @@
 import com.android.launcher3.shortcuts.ShortcutKey;
 
 import java.util.HashSet;
+import java.util.Set;
 
 /**
  * A utility class to check for {@link ItemInfo}
@@ -99,7 +100,7 @@
         return (info, cn) -> packageNames.contains(cn.getPackageName()) && info.user.equals(user);
     }
 
-    static ItemInfoMatcher ofShortcutKeys(HashSet<ShortcutKey> keys) {
+    static ItemInfoMatcher ofShortcutKeys(Set<ShortcutKey> keys) {
         return  (info, cn) -> info.itemType == Favorites.ITEM_TYPE_DEEP_SHORTCUT &&
                         keys.contains(ShortcutKey.fromItemInfo(info));
     }
diff --git a/src/com/android/launcher3/util/MultiHashMap.java b/src/com/android/launcher3/util/MultiHashMap.java
deleted file mode 100644
index b7275c1..0000000
--- a/src/com/android/launcher3/util/MultiHashMap.java
+++ /dev/null
@@ -1,52 +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.util;
-
-import java.util.ArrayList;
-import java.util.HashMap;
-
-/**
- * A utility map from keys to an ArrayList of values.
- */
-public class MultiHashMap<K, V> extends HashMap<K, ArrayList<V>> {
-
-    public MultiHashMap() { }
-
-    public MultiHashMap(int size) {
-        super(size);
-    }
-
-    public void addToList(K key, V value) {
-        ArrayList<V> list = get(key);
-        if (list == null) {
-            list = new ArrayList<>();
-            list.add(value);
-            put(key, list);
-        } else {
-            list.add(value);
-        }
-    }
-
-    @Override
-    public MultiHashMap<K, V> clone() {
-        MultiHashMap<K, V> map = new MultiHashMap<>(size());
-        for (Entry<K, ArrayList<V>> entry : entrySet()) {
-            map.put(entry.getKey(), new ArrayList<V>(entry.getValue()));
-        }
-        return map;
-    }
-}
diff --git a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
index a64df62..34ebbac 100644
--- a/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
+++ b/src_shortcuts_overrides/com/android/launcher3/model/WidgetsModel.java
@@ -26,7 +26,6 @@
 import com.android.launcher3.icons.IconCache;
 import com.android.launcher3.model.data.PackageItemInfo;
 import com.android.launcher3.pm.ShortcutConfigActivityInfo;
-import com.android.launcher3.util.MultiHashMap;
 import com.android.launcher3.util.PackageUserKey;
 import com.android.launcher3.util.Preconditions;
 import com.android.launcher3.widget.WidgetItemComparator;
@@ -36,11 +35,12 @@
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
+import java.util.function.Predicate;
+import java.util.stream.Collectors;
 
 /**
  * Widgets data model that is used by the adapters of the widget views and controllers.
@@ -57,9 +57,7 @@
     private static final boolean DEBUG = false;
 
     /* Map of widgets and shortcuts that are tracked per package. */
-    private final MultiHashMap<PackageItemInfo, WidgetItem> mWidgetsList = new MultiHashMap<>();
-
-    private AppFilter mAppFilter;
+    private final Map<PackageItemInfo, List<WidgetItem>> mWidgetsList = new HashMap<>();
 
     /**
      * Returns a list of {@link WidgetListRowEntry}. All {@link WidgetItem} in a single row
@@ -74,8 +72,9 @@
         AlphabeticIndexCompat indexer = new AlphabeticIndexCompat(context);
 
         WidgetItemComparator widgetComparator = new WidgetItemComparator();
-        for (Map.Entry<PackageItemInfo, ArrayList<WidgetItem>> entry : mWidgetsList.entrySet()) {
-            WidgetListRowEntry row = new WidgetListRowEntry(entry.getKey(), entry.getValue());
+        for (Map.Entry<PackageItemInfo, List<WidgetItem>> entry : mWidgetsList.entrySet()) {
+            WidgetListRowEntry row = new WidgetListRowEntry(
+                    entry.getKey(), new ArrayList<>(entry.getValue()));
             row.titleSectionName = (row.pkgItem.title == null) ? "" :
                     indexer.computeSectionName(row.pkgItem.title);
             Collections.sort(row.widgets, widgetComparator);
@@ -146,77 +145,42 @@
         if (packageUser == null) {
             mWidgetsList.clear();
         } else {
-            // Only clear the widgets for the given package/user.
-            PackageItemInfo packageItem = null;
-            for (PackageItemInfo item : mWidgetsList.keySet()) {
-                if (item.packageName.equals(packageUser.mPackageName)) {
-                    packageItem = item;
-                    break;
-                }
-            }
+            PackageItemInfo packageItem = mWidgetsList.keySet()
+                    .stream()
+                    .filter(item -> item.packageName.equals(packageUser.mPackageName))
+                    .findFirst()
+                    .orElse(null);
             if (packageItem != null) {
                 // We want to preserve the user that was on the packageItem previously,
                 // so add it to tmpPackageItemInfos here to avoid creating a new entry.
                 tmpPackageItemInfos.put(packageItem.packageName, packageItem);
 
-                Iterator<WidgetItem> widgetItemIterator = mWidgetsList.get(packageItem).iterator();
-                while (widgetItemIterator.hasNext()) {
-                    WidgetItem nextWidget = widgetItemIterator.next();
-                    if (nextWidget.componentName.getPackageName().equals(packageUser.mPackageName)
-                            && nextWidget.user.equals(packageUser.mUser)) {
-                        widgetItemIterator.remove();
-                    }
-                }
+                // Add the widgets for other users in the rawList as it only contains widgets for
+                // packageUser
+                List<WidgetItem> otherUserItems = mWidgetsList.remove(packageItem);
+                otherUserItems.removeIf(w -> w.user.equals(packageUser.mUser));
+                rawWidgetsShortcuts.addAll(otherUserItems);
             }
         }
 
-        InvariantDeviceProfile idp = app.getInvariantDeviceProfile();
         UserHandle myUser = Process.myUserHandle();
 
         // add and update.
-        for (WidgetItem item : rawWidgetsShortcuts) {
-            if (item.widgetInfo != null) {
-                if ((item.widgetInfo.getWidgetFeatures() & WIDGET_FEATURE_HIDE_FROM_PICKER) != 0) {
-                    // Widget is hidden from picker
-                    continue;
-                }
-
-                // Ensure that all widgets we show can be added on a workspace of this size
-                int minSpanX = Math.min(item.widgetInfo.spanX, item.widgetInfo.minSpanX);
-                int minSpanY = Math.min(item.widgetInfo.spanY, item.widgetInfo.minSpanY);
-                if (minSpanX > idp.numColumns || minSpanY > idp.numRows) {
-                    if (DEBUG) {
-                        Log.d(TAG, String.format(
-                                "Widget %s : (%d X %d) can't fit on this device",
-                                item.componentName, minSpanX, minSpanY));
+        mWidgetsList.putAll(rawWidgetsShortcuts.stream()
+                .filter(new WidgetValidityCheck(app))
+                .collect(Collectors.groupingBy(item -> {
+                    String packageName = item.componentName.getPackageName();
+                    PackageItemInfo pInfo = tmpPackageItemInfos.get(packageName);
+                    if (pInfo == null) {
+                        pInfo = new PackageItemInfo(packageName);
+                        pInfo.user = item.user;
+                        tmpPackageItemInfos.put(packageName,  pInfo);
+                    } else if (!myUser.equals(pInfo.user)) {
+                        // Keep updating the user, until we get the primary user.
+                        pInfo.user = item.user;
                     }
-                    continue;
-                }
-            }
-
-            if (mAppFilter == null) {
-                mAppFilter = AppFilter.newInstance(app.getContext());
-            }
-            if (!mAppFilter.shouldShowApp(item.componentName)) {
-                if (DEBUG) {
-                    Log.d(TAG, String.format("%s is filtered and not added to the widget tray.",
-                            item.componentName));
-                }
-                continue;
-            }
-
-            String packageName = item.componentName.getPackageName();
-            PackageItemInfo pInfo = tmpPackageItemInfos.get(packageName);
-            if (pInfo == null) {
-                pInfo = new PackageItemInfo(packageName);
-                pInfo.user = item.user;
-                tmpPackageItemInfos.put(packageName,  pInfo);
-            } else if (!myUser.equals(pInfo.user)) {
-                // Keep updating the user, until we get the primary user.
-                pInfo.user = item.user;
-            }
-            mWidgetsList.addToList(pInfo, item);
-        }
+                    return pInfo;
+                })));
 
         // Update each package entry
         IconCache iconCache = app.getIconCache();
@@ -227,9 +191,9 @@
 
     public void onPackageIconsUpdated(Set<String> packageNames, UserHandle user,
             LauncherAppState app) {
-        for (Entry<PackageItemInfo, ArrayList<WidgetItem>> entry : mWidgetsList.entrySet()) {
+        for (Entry<PackageItemInfo, List<WidgetItem>> entry : mWidgetsList.entrySet()) {
             if (packageNames.contains(entry.getKey().packageName)) {
-                ArrayList<WidgetItem> items = entry.getValue();
+                List<WidgetItem> items = entry.getValue();
                 int count = items.size();
                 for (int i = 0; i < count; i++) {
                     WidgetItem item = items.get(i);
@@ -249,7 +213,7 @@
 
     public WidgetItem getWidgetProviderInfoByProviderName(
             ComponentName providerName) {
-        ArrayList<WidgetItem> widgetsList = mWidgetsList.get(
+        List<WidgetItem> widgetsList = mWidgetsList.get(
                 new PackageItemInfo(providerName.getPackageName()));
         if (widgetsList == null) {
             return null;
@@ -262,4 +226,46 @@
         }
         return null;
     }
+
+    private static class WidgetValidityCheck implements Predicate<WidgetItem> {
+
+        private final InvariantDeviceProfile mIdp;
+        private final AppFilter mAppFilter;
+
+        WidgetValidityCheck(LauncherAppState app) {
+            mIdp = app.getInvariantDeviceProfile();
+            mAppFilter = AppFilter.newInstance(app.getContext());
+        }
+
+        @Override
+        public boolean test(WidgetItem item) {
+            if (item.widgetInfo != null) {
+                if ((item.widgetInfo.getWidgetFeatures() & WIDGET_FEATURE_HIDE_FROM_PICKER) != 0) {
+                    // Widget is hidden from picker
+                    return false;
+                }
+
+                // Ensure that all widgets we show can be added on a workspace of this size
+                int minSpanX = Math.min(item.widgetInfo.spanX, item.widgetInfo.minSpanX);
+                int minSpanY = Math.min(item.widgetInfo.spanY, item.widgetInfo.minSpanY);
+                if (minSpanX > mIdp.numColumns || minSpanY > mIdp.numRows) {
+                    if (DEBUG) {
+                        Log.d(TAG, String.format(
+                                "Widget %s : (%d X %d) can't fit on this device",
+                                item.componentName, minSpanX, minSpanY));
+                    }
+                    return false;
+                }
+            }
+            if (!mAppFilter.shouldShowApp(item.componentName)) {
+                if (DEBUG) {
+                    Log.d(TAG, String.format("%s is filtered and not added to the widget tray.",
+                            item.componentName));
+                }
+                return false;
+            }
+
+            return true;
+        }
+    }
 }
\ No newline at end of file