diff --git a/quickstep/src/com/android/launcher3/model/PredictionUpdateTask.java b/quickstep/src/com/android/launcher3/model/PredictionUpdateTask.java
index e504141..2fcbe4e 100644
--- a/quickstep/src/com/android/launcher3/model/PredictionUpdateTask.java
+++ b/quickstep/src/com/android/launcher3/model/PredictionUpdateTask.java
@@ -15,8 +15,9 @@
  */
 package com.android.launcher3.model;
 
+import static com.android.launcher3.LauncherPrefs.nonRestorableItem;
+import static com.android.launcher3.EncryptionType.ENCRYPTED;
 import static com.android.launcher3.LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT;
-import static com.android.launcher3.model.QuickstepModelDelegate.LAST_PREDICTION_ENABLED_STATE;
 import static com.android.quickstep.InstantAppResolverImpl.COMPONENT_CLASS_MARKER;
 
 import android.app.prediction.AppTarget;
@@ -29,6 +30,7 @@
 
 import androidx.annotation.NonNull;
 
+import com.android.launcher3.ConstantItem;
 import com.android.launcher3.LauncherAppState;
 import com.android.launcher3.LauncherPrefs;
 import com.android.launcher3.model.BgDataModel.FixedContainerItems;
@@ -47,6 +49,9 @@
  */
 public class PredictionUpdateTask extends BaseModelUpdateTask {
 
+    public static final ConstantItem<Boolean> LAST_PREDICTION_ENABLED =
+            nonRestorableItem("last_prediction_enabled_state", true, ENCRYPTED);
+
     private final List<AppTarget> mTargets;
     private final PredictorState mPredictorState;
 
@@ -61,8 +66,7 @@
         Context context = app.getContext();
 
         // TODO: remove this
-        LauncherPrefs.getDevicePrefs(context).edit()
-                .putBoolean(LAST_PREDICTION_ENABLED_STATE, !mTargets.isEmpty()).apply();
+        LauncherPrefs.get(context).put(LAST_PREDICTION_ENABLED, !mTargets.isEmpty());
 
         Set<UserHandle> usersForChangedShortcuts =
                 dataModel.extraItems.get(mPredictorState.containerId).items.stream()
diff --git a/quickstep/src/com/android/launcher3/model/QuickstepModelDelegate.java b/quickstep/src/com/android/launcher3/model/QuickstepModelDelegate.java
index 32361a8..667f784 100644
--- a/quickstep/src/com/android/launcher3/model/QuickstepModelDelegate.java
+++ b/quickstep/src/com/android/launcher3/model/QuickstepModelDelegate.java
@@ -18,7 +18,8 @@
 import static android.text.format.DateUtils.DAY_IN_MILLIS;
 import static android.text.format.DateUtils.formatElapsedTime;
 
-import static com.android.launcher3.LauncherPrefs.getDevicePrefs;
+import static com.android.launcher3.LauncherPrefs.nonRestorableItem;
+import static com.android.launcher3.EncryptionType.ENCRYPTED;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_HOTSEAT_PREDICTION;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_PREDICTION;
 import static com.android.launcher3.LauncherSettings.Favorites.CONTAINER_WIDGETS_PREDICTION;
@@ -39,7 +40,6 @@
 import android.app.prediction.AppTargetEvent;
 import android.content.Context;
 import android.content.Intent;
-import android.content.SharedPreferences;
 import android.content.pm.LauncherActivityInfo;
 import android.content.pm.LauncherApps;
 import android.content.pm.ShortcutInfo;
@@ -55,8 +55,10 @@
 import androidx.annotation.VisibleForTesting;
 import androidx.annotation.WorkerThread;
 
+import com.android.launcher3.ConstantItem;
 import com.android.launcher3.InvariantDeviceProfile;
 import com.android.launcher3.LauncherAppState;
+import com.android.launcher3.LauncherPrefs;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.launcher3.logger.LauncherAtom;
 import com.android.launcher3.logging.InstanceId;
@@ -86,14 +88,15 @@
  */
 public class QuickstepModelDelegate extends ModelDelegate {
 
-    public static final String LAST_PREDICTION_ENABLED_STATE = "last_prediction_enabled_state";
-    private static final String LAST_SNAPSHOT_TIME_MILLIS = "LAST_SNAPSHOT_TIME_MILLIS";
     private static final String BUNDLE_KEY_ADDED_APP_WIDGETS = "added_app_widgets";
     private static final int NUM_OF_RECOMMENDED_WIDGETS_PREDICATION = 20;
 
     private static final boolean IS_DEBUG = false;
     private static final String TAG = "QuickstepModelDelegate";
 
+    private static final ConstantItem<Long> LAST_SNAPSHOT_TIME_MILLIS =
+            nonRestorableItem("LAST_SNAPSHOT_TIME_MILLIS", 0L, ENCRYPTED);
+
     @VisibleForTesting
     final PredictorState mAllAppsState =
             new PredictorState(CONTAINER_PREDICTION, "all_apps_predictions");
@@ -211,8 +214,8 @@
         super.modelLoadComplete();
 
         // Log snapshot of the model
-        SharedPreferences prefs = getDevicePrefs(mApp.getContext());
-        long lastSnapshotTimeMillis = prefs.getLong(LAST_SNAPSHOT_TIME_MILLIS, 0);
+        LauncherPrefs prefs = LauncherPrefs.get(mApp.getContext());
+        long lastSnapshotTimeMillis = prefs.get(LAST_SNAPSHOT_TIME_MILLIS);
         // Log snapshot only if previous snapshot was older than a day
         long now = System.currentTimeMillis();
         if (now - lastSnapshotTimeMillis < DAY_IN_MILLIS) {
@@ -233,7 +236,7 @@
                 StatsLogCompatManager.writeSnapshot(info.buildProto(parent), instanceId);
             }
             additionalSnapshotEvents(instanceId);
-            prefs.edit().putLong(LAST_SNAPSHOT_TIME_MILLIS, now).apply();
+            prefs.put(LAST_SNAPSHOT_TIME_MILLIS, now);
         }
 
         // Only register for launcher snapshot logging if this is the primary ModelDelegate
diff --git a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
index d3a01f2..f8d695c 100644
--- a/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
+++ b/quickstep/src/com/android/quickstep/logging/SettingsChangeLogger.java
@@ -26,7 +26,7 @@
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_DISABLED;
 import static com.android.launcher3.logging.StatsLogManager.LauncherEvent.LAUNCHER_THEMED_ICON_ENABLED;
 import static com.android.launcher3.model.DeviceGridState.KEY_WORKSPACE_SIZE;
-import static com.android.launcher3.model.QuickstepModelDelegate.LAST_PREDICTION_ENABLED_STATE;
+import static com.android.launcher3.model.PredictionUpdateTask.LAST_PREDICTION_ENABLED;
 import static com.android.launcher3.util.DisplayController.CHANGE_NAVIGATION_MODE;
 import static com.android.launcher3.util.SettingsCache.NOTIFICATION_BADGING_URI;
 import static com.android.launcher3.util.Themes.KEY_THEMED_ICONS;
@@ -155,13 +155,12 @@
 
     @Override
     public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {
-        if (LAST_PREDICTION_ENABLED_STATE.equals(key)
+        if (LAST_PREDICTION_ENABLED.getSharedPrefKey().equals(key)
                 || KEY_WORKSPACE_SIZE.equals(key)
                 || KEY_THEMED_ICONS.equals(key)
                 || mLoggablePrefs.containsKey(key)) {
 
-            mHomeScreenSuggestionEvent = getDevicePrefs(mContext)
-                    .getBoolean(LAST_PREDICTION_ENABLED_STATE, true)
+            mHomeScreenSuggestionEvent = LauncherPrefs.get(mContext).get(LAST_PREDICTION_ENABLED)
                     ? LAUNCHER_HOME_SCREEN_SUGGESTIONS_ENABLED
                     : LAUNCHER_HOME_SCREEN_SUGGESTIONS_DISABLED;
 
diff --git a/src/com/android/launcher3/LauncherPrefs.kt b/src/com/android/launcher3/LauncherPrefs.kt
index f2df230..e822cca 100644
--- a/src/com/android/launcher3/LauncherPrefs.kt
+++ b/src/com/android/launcher3/LauncherPrefs.kt
@@ -413,7 +413,6 @@
                 type
             )
 
-        @VisibleForTesting
         @JvmStatic
         fun <T> nonRestorableItem(
             sharedPrefKey: String,