diff --git a/src/com/android/launcher3/InstallShortcutReceiver.java b/src/com/android/launcher3/InstallShortcutReceiver.java
index ea59fff..5c5f5e4 100644
--- a/src/com/android/launcher3/InstallShortcutReceiver.java
+++ b/src/com/android/launcher3/InstallShortcutReceiver.java
@@ -57,6 +57,7 @@
 import java.net.URISyntaxException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.List;
@@ -172,7 +173,7 @@
             Log.d(TAG, "APPS_PENDING_INSTALL: " + strings
                     + ", removing packages: " + packageNames);
         }
-        if (Utilities.isEmpty(strings)) {
+        if (strings == null || ((Collection) strings).isEmpty()) {
             return;
         }
         Set<String> newStrings = new HashSet<>(strings);
@@ -268,7 +269,7 @@
         HashSet<ShortcutKey> result = new HashSet<>();
 
         Set<String> strings = Utilities.getPrefs(context).getStringSet(APPS_PENDING_INSTALL, null);
-        if (Utilities.isEmpty(strings)) {
+        if (strings == null || ((Collection) strings).isEmpty()) {
             return result;
         }
 
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index fc3af7e..73fba4e 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -146,6 +146,7 @@
 import java.util.HashSet;
 import java.util.List;
 import java.util.Set;
+import java.util.function.Predicate;
 
 import androidx.annotation.Nullable;
 
@@ -1118,7 +1119,7 @@
         }
     };
 
-    public void updateNotificationDots(final Set<PackageUserKey> updatedDots) {
+    public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         mWorkspace.updateNotificationDots(updatedDots);
         mAppsView.getAppsStore().updateNotificationDots(updatedDots);
 
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index c847120..60dfbb7 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -57,8 +57,6 @@
 import java.io.Closeable;
 import java.io.IOException;
 import java.lang.reflect.Method;
-import java.util.Collection;
-import java.util.HashSet;
 import java.util.Locale;
 import java.util.concurrent.Executor;
 import java.util.concurrent.LinkedBlockingQueue;
@@ -514,47 +512,12 @@
         }
     }
 
-    /**
-     * Returns true if {@param original} contains all entries defined in {@param updates} and
-     * have the same value.
-     * The comparison uses {@link Object#equals(Object)} to compare the values.
-     */
-    public static boolean containsAll(Bundle original, Bundle updates) {
-        for (String key : updates.keySet()) {
-            Object value1 = updates.get(key);
-            Object value2 = original.get(key);
-            if (value1 == null) {
-                if (value2 != null) {
-                    return false;
-                }
-            } else if (!value1.equals(value2)) {
-                return false;
-            }
-        }
-        return true;
-    }
-
-    /** Returns whether the collection is null or empty. */
-    public static boolean isEmpty(Collection c) {
-        return c == null || c.isEmpty();
-    }
-
     public static boolean isBinderSizeError(Exception e) {
         return e.getCause() instanceof TransactionTooLargeException
                 || e.getCause() instanceof DeadObjectException;
     }
 
     /**
-     * Returns a HashSet with a single element. We use this instead of Collections.singleton()
-     * because HashSet ensures all operations, such as remove, are supported.
-     */
-    public static <T> HashSet<T> singletonHashSet(T elem) {
-        HashSet<T> hashSet = new HashSet<>(1);
-        hashSet.add(elem);
-        return hashSet;
-    }
-
-    /**
      * Utility method to post a runnable on the handler, skipping the synchronization barriers.
      */
     public static void postAsyncCallback(Handler handler, Runnable callback) {
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 3438a26..2db6cd9 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -98,6 +98,7 @@
 import java.util.ArrayList;
 import java.util.HashSet;
 import java.util.Set;
+import java.util.function.Predicate;
 
 /**
  * The workspace is a wide area with a wallpaper and a finite number of pages.
@@ -3059,7 +3060,7 @@
         });
     }
 
-    public void updateNotificationDots(final Set<PackageUserKey> updatedDots) {
+    public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         final PackageUserKey packageUserKey = new PackageUserKey(null, null);
         final IntSet folderIds = new IntSet();
         mapOverItems(MAP_RECURSE, new ItemOperator() {
@@ -3067,7 +3068,7 @@
             public boolean evaluate(ItemInfo info, View v) {
                 if (info instanceof ShortcutInfo && v instanceof BubbleTextView) {
                     if (!packageUserKey.updateFromItemInfo(info)
-                            || updatedDots.contains(packageUserKey)) {
+                            || updatedDots.test(packageUserKey)) {
                         ((BubbleTextView) v).applyDotState(info, true /* animate */);
                         folderIds.add(info.container);
                     }
diff --git a/src/com/android/launcher3/allapps/AllAppsStore.java b/src/com/android/launcher3/allapps/AllAppsStore.java
index 52d7d28..8e7fec8 100644
--- a/src/com/android/launcher3/allapps/AllAppsStore.java
+++ b/src/com/android/launcher3/allapps/AllAppsStore.java
@@ -31,6 +31,7 @@
 import java.util.List;
 import java.util.Set;
 import java.util.function.Consumer;
+import java.util.function.Predicate;
 
 /**
  * A utility class to maintain the collection of all apps.
@@ -122,11 +123,11 @@
         mIconContainers.remove(container);
     }
 
-    public void updateNotificationDots(Set<PackageUserKey> updatedDots) {
+    public void updateNotificationDots(Predicate<PackageUserKey> updatedDots) {
         updateAllIcons((child) -> {
             if (child.getTag() instanceof ItemInfo) {
                 ItemInfo info = (ItemInfo) child.getTag();
-                if (mTempKey.updateFromItemInfo(info) && updatedDots.contains(mTempKey)) {
+                if (mTempKey.updateFromItemInfo(info) && updatedDots.test(mTempKey)) {
                     child.applyDotState(info, true /* animate */);
                 }
             }
diff --git a/src/com/android/launcher3/popup/PopupContainerWithArrow.java b/src/com/android/launcher3/popup/PopupContainerWithArrow.java
index 288d568..9b23f3f 100644
--- a/src/com/android/launcher3/popup/PopupContainerWithArrow.java
+++ b/src/com/android/launcher3/popup/PopupContainerWithArrow.java
@@ -73,6 +73,7 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
+import java.util.function.Predicate;
 
 /**
  * A container for shortcuts to deep links and notifications associated with an app.
@@ -463,10 +464,10 @@
     /**
      * Updates the notification header if the original icon's dot updated.
      */
-    public void updateNotificationHeader(Set<PackageUserKey> updatedDots) {
+    public void updateNotificationHeader(Predicate<PackageUserKey> updatedDots) {
         ItemInfo itemInfo = (ItemInfo) mOriginalIcon.getTag();
         PackageUserKey packageUser = PackageUserKey.fromItemInfo(itemInfo);
-        if (updatedDots.contains(packageUser)) {
+        if (updatedDots.test(packageUser)) {
             updateNotificationHeader();
         }
     }
diff --git a/src/com/android/launcher3/popup/PopupDataProvider.java b/src/com/android/launcher3/popup/PopupDataProvider.java
index 984a03d..f4da858 100644
--- a/src/com/android/launcher3/popup/PopupDataProvider.java
+++ b/src/com/android/launcher3/popup/PopupDataProvider.java
@@ -85,7 +85,7 @@
             }
         }
         if (dotShouldBeRefreshed) {
-            mLauncher.updateNotificationDots(Utilities.singletonHashSet(postedPackageUserKey));
+            mLauncher.updateNotificationDots(t -> postedPackageUserKey.equals(t));
         }
     }
 
@@ -97,7 +97,7 @@
             if (oldDotInfo.getNotificationKeys().size() == 0) {
                 mPackageUserToDotInfos.remove(removedPackageUserKey);
             }
-            mLauncher.updateNotificationDots(Utilities.singletonHashSet(removedPackageUserKey));
+            mLauncher.updateNotificationDots(t -> removedPackageUserKey.equals(t));
             trimNotifications(mPackageUserToDotInfos);
         }
     }
@@ -133,7 +133,7 @@
         }
 
         if (!updatedDots.isEmpty()) {
-            mLauncher.updateNotificationDots(updatedDots.keySet());
+            mLauncher.updateNotificationDots(updatedDots::containsKey);
         }
         trimNotifications(updatedDots);
     }
diff --git a/src/com/android/launcher3/qsb/QsbContainerView.java b/src/com/android/launcher3/qsb/QsbContainerView.java
index 57a458b..c2bae6d 100644
--- a/src/com/android/launcher3/qsb/QsbContainerView.java
+++ b/src/com/android/launcher3/qsb/QsbContainerView.java
@@ -159,7 +159,7 @@
                 mQsb.setId(R.id.qsb_widget);
 
                 if (!isInPreviewMode()) {
-                    if (!Utilities.containsAll(AppWidgetManager.getInstance(context)
+                    if (!containsAll(AppWidgetManager.getInstance(context)
                             .getAppWidgetOptions(widgetId), opts)) {
                         mQsb.updateAppWidgetOptions(opts);
                     }
@@ -296,4 +296,24 @@
 
         QsbWidgetHostView newView(Context context);
     }
+
+    /**
+     * Returns true if {@param original} contains all entries defined in {@param updates} and
+     * have the same value.
+     * The comparison uses {@link Object#equals(Object)} to compare the values.
+     */
+    private static boolean containsAll(Bundle original, Bundle updates) {
+        for (String key : updates.keySet()) {
+            Object value1 = updates.get(key);
+            Object value2 = original.get(key);
+            if (value1 == null) {
+                if (value2 != null) {
+                    return false;
+                }
+            } else if (!value1.equals(value2)) {
+                return false;
+            }
+        }
+        return true;
+    }
 }