diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index ce6fb21..ef210d4 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -178,13 +178,6 @@
             >
         </service>
 
-        <receiver
-            android:name="com.android.launcher3.WallpaperChangedReceiver">
-            <intent-filter>
-                <action android:name="android.intent.action.WALLPAPER_CHANGED" />
-            </intent-filter>
-        </receiver>
-
         <!-- Intent received used to install shortcuts from other applications -->
         <receiver
             android:name="com.android.launcher3.InstallShortcutReceiver"
diff --git a/WallpaperPicker/src/com/android/launcher3/WallpaperCropActivity.java b/WallpaperPicker/src/com/android/launcher3/WallpaperCropActivity.java
index 4727d06..eb47380 100644
--- a/WallpaperPicker/src/com/android/launcher3/WallpaperCropActivity.java
+++ b/WallpaperPicker/src/com/android/launcher3/WallpaperCropActivity.java
@@ -19,10 +19,7 @@
 import android.annotation.TargetApi;
 import android.app.ActionBar;
 import android.app.Activity;
-import android.app.WallpaperManager;
-import android.content.Context;
 import android.content.Intent;
-import android.content.SharedPreferences;
 import android.content.res.Configuration;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
@@ -58,9 +55,6 @@
 public class WallpaperCropActivity extends BaseActivity implements Handler.Callback {
     private static final String LOGTAG = "Launcher3.CropActivity";
 
-    protected static final String WALLPAPER_WIDTH_KEY = WallpaperUtils.WALLPAPER_WIDTH_KEY;
-    protected static final String WALLPAPER_HEIGHT_KEY = WallpaperUtils.WALLPAPER_HEIGHT_KEY;
-
     /**
      * The maximum bitmap size we allow to be returned through the intent.
      * Intents have a maximum of 1MB in total size. However, the Bitmap seems to
@@ -69,7 +63,6 @@
      * array instead of a Bitmap instance to avoid overhead.
      */
     public static final int MAX_BMAP_IN_INTENT = 750000;
-    public static final float WALLPAPER_SCREENS_SPAN = WallpaperUtils.WALLPAPER_SCREENS_SPAN;
 
     private static final int MSG_LOAD_IMAGE = 1;
 
@@ -302,7 +295,7 @@
         final Point bounds = cropTask.getImageBounds();
         Runnable onEndCrop = new Runnable() {
             public void run() {
-                updateWallpaperDimensions(bounds.x, bounds.y);
+                WallpaperUtils.saveWallpaperDimensions(bounds.x, bounds.y, WallpaperCropActivity.this);
                 if (finishActivityWhenDone) {
                     setResult(Activity.RESULT_OK);
                     finish();
@@ -328,7 +321,7 @@
             public void run() {
                 // Passing 0, 0 will cause launcher to revert to using the
                 // default wallpaper size
-                updateWallpaperDimensions(0, 0);
+                WallpaperUtils.saveWallpaperDimensions(0, 0, WallpaperCropActivity.this);
                 if (finishActivityWhenDone) {
                     setResult(Activity.RESULT_OK);
                     finish();
@@ -420,7 +413,7 @@
 
         Runnable onEndCrop = new Runnable() {
             public void run() {
-                updateWallpaperDimensions(outWidth, outHeight);
+                WallpaperUtils.saveWallpaperDimensions(outWidth, outHeight, WallpaperCropActivity.this);
                 if (finishActivityWhenDone) {
                     setResult(Activity.RESULT_OK);
                     finish();
@@ -435,22 +428,6 @@
         cropTask.execute();
     }
 
-    protected void updateWallpaperDimensions(int width, int height) {
-        String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY;
-        SharedPreferences sp = getContext().getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
-        SharedPreferences.Editor editor = sp.edit();
-        if (width != 0 && height != 0) {
-            editor.putInt(WALLPAPER_WIDTH_KEY, width);
-            editor.putInt(WALLPAPER_HEIGHT_KEY, height);
-        } else {
-            editor.remove(WALLPAPER_WIDTH_KEY);
-            editor.remove(WALLPAPER_HEIGHT_KEY);
-        }
-        editor.commit();
-        WallpaperUtils.suggestWallpaperDimension(getResources(),
-                sp, getWindowManager(), WallpaperManager.getInstance(getContext()), true);
-    }
-
     static class LoadRequest {
         BitmapSource src;
         boolean touchEnabled;
diff --git a/src/com/android/launcher3/LauncherAppState.java b/src/com/android/launcher3/LauncherAppState.java
index f2d58ff..5a7fadb 100644
--- a/src/com/android/launcher3/LauncherAppState.java
+++ b/src/com/android/launcher3/LauncherAppState.java
@@ -17,6 +17,7 @@
 package com.android.launcher3;
 
 import android.app.SearchManager;
+import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
@@ -37,7 +38,7 @@
     private final IconCache mIconCache;
     private final WidgetPreviewLoader mWidgetCache;
 
-    private boolean mWallpaperChangedSinceLastCheck;
+    @Thunk boolean mWallpaperChangedSinceLastCheck;
 
     private static WeakReference<LauncherProvider> sLauncherProvider;
     private static Context sContext;
@@ -100,6 +101,16 @@
 
         sContext.registerReceiver(mModel, filter);
         UserManagerCompat.getInstance(sContext).enableAndResetCache();
+
+        if (!Utilities.ATLEAST_KITKAT) {
+            sContext.registerReceiver(new BroadcastReceiver() {
+
+                @Override
+                public void onReceive(Context context, Intent intent) {
+                    mWallpaperChangedSinceLastCheck = true;
+                }
+            }, new IntentFilter(Intent.ACTION_WALLPAPER_CHANGED));
+        }
     }
 
     /**
@@ -156,10 +167,6 @@
     public WidgetPreviewLoader getWidgetCache() {
         return mWidgetCache;
     }
-    
-    public void onWallpaperChanged() {
-        mWallpaperChangedSinceLastCheck = true;
-    }
 
     public boolean hasWallpaperChangedSinceLastCheck() {
         boolean result = mWallpaperChangedSinceLastCheck;
diff --git a/src/com/android/launcher3/WallpaperChangedReceiver.java b/src/com/android/launcher3/WallpaperChangedReceiver.java
deleted file mode 100644
index 2d5612f..0000000
--- a/src/com/android/launcher3/WallpaperChangedReceiver.java
+++ /dev/null
@@ -1,29 +0,0 @@
-/*
- * Copyright (C) 2013 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;
-
-import android.content.BroadcastReceiver;
-import android.content.Context;
-import android.content.Intent;
-
-public class WallpaperChangedReceiver extends BroadcastReceiver {
-    public void onReceive(Context context, Intent data) {
-        LauncherAppState.setApplicationContext(context.getApplicationContext());
-        LauncherAppState appState = LauncherAppState.getInstance();
-        appState.onWallpaperChanged();
-    }
-}
diff --git a/src/com/android/launcher3/Workspace.java b/src/com/android/launcher3/Workspace.java
index 387fd1f..f299a45 100644
--- a/src/com/android/launcher3/Workspace.java
+++ b/src/com/android/launcher3/Workspace.java
@@ -28,7 +28,6 @@
 import android.appwidget.AppWidgetProviderInfo;
 import android.content.ComponentName;
 import android.content.Context;
-import android.content.SharedPreferences;
 import android.content.res.Resources;
 import android.content.res.TypedArray;
 import android.graphics.Bitmap;
@@ -1308,12 +1307,12 @@
     protected void setWallpaperDimension() {
         new AsyncTask<Void, Void, Void>() {
             public Void doInBackground(Void ... args) {
-                String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY;
-                SharedPreferences sp =
-                        mLauncher.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
-                WallpaperUtils.suggestWallpaperDimension(mLauncher.getResources(),
-                        sp, mLauncher.getWindowManager(), mWallpaperManager,
-                        mLauncher.overrideWallpaperDimensions());
+                if (Utilities.ATLEAST_KITKAT) {
+                    WallpaperUtils.suggestWallpaperDimension(mLauncher);
+                } else {
+                    WallpaperUtils.suggestWallpaperDimensionPreK(mLauncher,
+                            mLauncher.overrideWallpaperDimensions());
+                }
                 return null;
             }
         }.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, (Void) null);
diff --git a/src/com/android/launcher3/util/WallpaperUtils.java b/src/com/android/launcher3/util/WallpaperUtils.java
index b9fccbc..a5251e1 100644
--- a/src/com/android/launcher3/util/WallpaperUtils.java
+++ b/src/com/android/launcher3/util/WallpaperUtils.java
@@ -17,13 +17,16 @@
 package com.android.launcher3.util;
 
 import android.annotation.TargetApi;
+import android.app.Activity;
 import android.app.WallpaperManager;
+import android.content.Context;
 import android.content.SharedPreferences;
 import android.content.res.Resources;
 import android.graphics.Point;
 import android.os.Build;
 import android.view.WindowManager;
 
+import com.android.launcher3.LauncherFiles;
 import com.android.launcher3.Utilities;
 
 /**
@@ -35,28 +38,59 @@
     public static final String WALLPAPER_HEIGHT_KEY = "wallpaper.height";
     public static final float WALLPAPER_SCREENS_SPAN = 2f;
 
-    public static void suggestWallpaperDimension(Resources res,
-            final SharedPreferences sharedPrefs,
-            WindowManager windowManager,
-            final WallpaperManager wallpaperManager, boolean fallBackToDefaults) {
-        final Point defaultWallpaperSize = WallpaperUtils.getDefaultWallpaperSize(res, windowManager);
+    public static void saveWallpaperDimensions(int width, int height, Activity activity) {
+        if (Utilities.ATLEAST_KITKAT) {
+            // From Kitkat onwards, ImageWallpaper does not care about the
+            // desired width and desired height of the wallpaper.
+            return;
+        }
+        String spKey = LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY;
+        SharedPreferences sp = activity.getSharedPreferences(spKey, Context.MODE_MULTI_PROCESS);
+        SharedPreferences.Editor editor = sp.edit();
+        if (width != 0 && height != 0) {
+            editor.putInt(WALLPAPER_WIDTH_KEY, width);
+            editor.putInt(WALLPAPER_HEIGHT_KEY, height);
+        } else {
+            editor.remove(WALLPAPER_WIDTH_KEY);
+            editor.remove(WALLPAPER_HEIGHT_KEY);
+        }
+        editor.commit();
+        suggestWallpaperDimensionPreK(activity, true);
+    }
+
+    public static void suggestWallpaperDimensionPreK(
+            Activity activity, boolean fallBackToDefaults) {
+        final Point defaultWallpaperSize = getDefaultWallpaperSize(
+                activity.getResources(), activity.getWindowManager());
+
+        SharedPreferences sp = activity.getSharedPreferences(
+                LauncherFiles.WALLPAPER_CROP_PREFERENCES_KEY, Context.MODE_MULTI_PROCESS);
         // If we have saved a wallpaper width/height, use that instead
+        int width = sp.getInt(WALLPAPER_WIDTH_KEY, -1);
+        int height = sp.getInt(WALLPAPER_HEIGHT_KEY, -1);
 
-        int savedWidth = sharedPrefs.getInt(WALLPAPER_WIDTH_KEY, -1);
-        int savedHeight = sharedPrefs.getInt(WALLPAPER_HEIGHT_KEY, -1);
-
-        if (savedWidth == -1 || savedHeight == -1) {
+        if (width == -1 || height == -1) {
             if (!fallBackToDefaults) {
                 return;
             } else {
-                savedWidth = defaultWallpaperSize.x;
-                savedHeight = defaultWallpaperSize.y;
+                width = defaultWallpaperSize.x;
+                height = defaultWallpaperSize.y;
             }
         }
 
-        if (savedWidth != wallpaperManager.getDesiredMinimumWidth() ||
-                savedHeight != wallpaperManager.getDesiredMinimumHeight()) {
-            wallpaperManager.suggestDesiredDimensions(savedWidth, savedHeight);
+        WallpaperManager wm = WallpaperManager.getInstance(activity);
+        if (width != wm.getDesiredMinimumWidth() || height != wm.getDesiredMinimumHeight()) {
+            wm.suggestDesiredDimensions(width, height);
+        }
+    }
+
+    public static void suggestWallpaperDimension(Activity activity) {
+        // Only live wallpapers care about desired size. Update the size to what launcher expects.
+        final Point size = getDefaultWallpaperSize(
+                activity.getResources(), activity.getWindowManager());
+        WallpaperManager wm = WallpaperManager.getInstance(activity);
+        if (size.x != wm.getDesiredMinimumWidth() || size.y != wm.getDesiredMinimumHeight()) {
+            wm.suggestDesiredDimensions(size.x, size.y);
         }
     }
 
@@ -64,7 +98,7 @@
      * As a ratio of screen height, the total distance we want the parallax effect to span
      * horizontally
      */
-    public static float wallpaperTravelToScreenWidthRatio(int width, int height) {
+    private static float wallpaperTravelToScreenWidthRatio(int width, int height) {
         float aspectRatio = width / (float) height;
 
         // At an aspect ratio of 16/10, the wallpaper parallax effect should span 1.5 * screen width
@@ -94,19 +128,10 @@
     @TargetApi(Build.VERSION_CODES.JELLY_BEAN_MR1)
     public static Point getDefaultWallpaperSize(Resources res, WindowManager windowManager) {
         if (sDefaultWallpaperSize == null) {
-            Point minDims = new Point();
-            Point maxDims = new Point();
-            windowManager.getDefaultDisplay().getCurrentSizeRange(minDims, maxDims);
-
-            int maxDim = Math.max(maxDims.x, maxDims.y);
-            int minDim = Math.max(minDims.x, minDims.y);
-
-            if (Utilities.ATLEAST_JB_MR1) {
-                Point realSize = new Point();
-                windowManager.getDefaultDisplay().getRealSize(realSize);
-                maxDim = Math.max(realSize.x, realSize.y);
-                minDim = Math.min(realSize.x, realSize.y);
-            }
+            Point realSize = new Point();
+            windowManager.getDefaultDisplay().getRealSize(realSize);
+            int maxDim = Math.max(realSize.x, realSize.y);
+            int minDim = Math.min(realSize.x, realSize.y);
 
             // We need to ensure that there is enough extra space in the wallpaper
             // for the intended parallax effects