diff --git a/api/current.xml b/api/current.xml
index 2672d5388047f..c47fd5a3d3966 100644
--- a/api/current.xml
+++ b/api/current.xml
@@ -2825,6 +2825,17 @@
  visibility="public"
 >
 </field>
+<field name="detachWallpaper"
+ type="int"
+ transient="false"
+ volatile="false"
+ value="16843430"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="detailColumn"
  type="int"
  transient="false"
@@ -162482,6 +162493,17 @@
  visibility="protected"
 >
 </method>
+<method name="getDetachWallpaper"
+ return="boolean"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</method>
 <method name="getDuration"
  return="long"
  abstract="false"
@@ -162728,6 +162750,19 @@
 <parameter name="listener" type="android.view.animation.Animation.AnimationListener">
 </parameter>
 </method>
+<method name="setDetachWallpaper"
+ return="void"
+ abstract="false"
+ native="false"
+ synchronized="false"
+ static="false"
+ final="false"
+ deprecated="not deprecated"
+ visibility="public"
+>
+<parameter name="detachWallpaper" type="boolean">
+</parameter>
+</method>
 <method name="setDuration"
  return="void"
  abstract="false"
diff --git a/core/java/android/view/animation/Animation.java b/core/java/android/view/animation/Animation.java
index 2f5e601f31ebb..c8396c4d49799 100644
--- a/core/java/android/view/animation/Animation.java
+++ b/core/java/android/view/animation/Animation.java
@@ -175,6 +175,11 @@ public abstract class Animation implements Cloneable {
      */
     private int mZAdjustment;
     
+    /**
+     * Don't animate the wallpaper.
+     */
+    private boolean mDetachWallpaper = false;
+
     private boolean mMore = true;
     private boolean mOneMoreTime = true;
 
@@ -218,6 +223,8 @@ public abstract class Animation implements Cloneable {
 
         setZAdjustment(a.getInt(com.android.internal.R.styleable.Animation_zAdjustment, ZORDER_NORMAL));
         
+        setDetachWallpaper(a.getBoolean(com.android.internal.R.styleable.Animation_detachWallpaper, false));
+        
         ensureInterpolator();
 
         a.recycle();
@@ -514,6 +521,19 @@ public abstract class Animation implements Cloneable {
         mZAdjustment = zAdjustment;
     }
     
+    /**
+     * If detachWallpaper is true, and this is a window animation of a window
+     * that has a wallpaper background, then the window will be detached from
+     * the wallpaper while it runs.  That is, the animation will only be applied
+     * to the window, and the wallpaper behind it will remain static.
+     *
+     * @param detachWallpaper true if the wallpaper should be detached from the animation
+     * @attr ref android.R.styleable#Animation_detachWallpaper
+     */
+    public void setDetachWallpaper(boolean detachWallpaper) {
+        mDetachWallpaper = detachWallpaper;
+    }
+
     /**
      * Gets the acceleration curve type for this animation.
      *
@@ -610,6 +630,14 @@ public abstract class Animation implements Cloneable {
         return mZAdjustment;
     }
 
+    /**
+     * Return value of {@link #setDetachWallpaper(boolean)}.
+     * @attr ref android.R.styleable#Animation_detachWallpaper
+     */
+    public boolean getDetachWallpaper() {
+        return mDetachWallpaper;
+    }
+
     /**
      * <p>Indicates whether or not this animation will affect the transformation
      * matrix. For instance, a fade animation will not affect the matrix whereas
diff --git a/core/res/res/anim/wallpaper_close_enter.xml b/core/res/res/anim/wallpaper_close_enter.xml
index 0d130098eea2b..5bc299e6d1493 100644
--- a/core/res/res/anim/wallpaper_close_enter.xml
+++ b/core/res/res/anim/wallpaper_close_enter.xml
@@ -17,8 +17,22 @@
 */
 -->
 
+<!-- This version zooms the new non-wallpaper down on top of the
+     wallpaper, without zooming the wallpaper itself. -->
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+        android:interpolator="@anim/decelerate_interpolator"
+        android:zAdjustment="top">
+    <scale android:fromXScale="2.0" android:toXScale="1.0"
+           android:fromYScale="2.0" android:toYScale="1.0"
+           android:pivotX="50%p" android:pivotY="50%p"
+           android:duration="@android:integer/config_mediumAnimTime" />
+    <alpha android:fromAlpha="0" android:toAlpha="1.0"
+            android:duration="@android:integer/config_mediumAnimTime"/>
+</set>
+
 <!-- This version zooms the new non-wallpaper down on top of the
      wallpaper. -->
+<!-- 
 <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:interpolator="@anim/decelerate_interpolator">
     <scale android:fromXScale="2.0" android:toXScale="1.0"
@@ -26,6 +40,7 @@
            android:pivotX="50%p" android:pivotY="50%p"
            android:duration="@android:integer/config_mediumAnimTime" />
 </set>
+-->
 
 <!-- This version is a variation on the inter-activity slide that
     also scales the wallpaper. -->
diff --git a/core/res/res/anim/wallpaper_close_exit.xml b/core/res/res/anim/wallpaper_close_exit.xml
index 5d91e308f09ab..c3ae6206a0eba 100644
--- a/core/res/res/anim/wallpaper_close_exit.xml
+++ b/core/res/res/anim/wallpaper_close_exit.xml
@@ -17,8 +17,20 @@
 */
 -->
 
+<!-- This version zooms the new non-wallpaper down on top of the
+     wallpaper, without zooming the wallpaper itself. -->
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+        android:interpolator="@anim/decelerate_interpolator"
+        android:detachWallpaper="true">
+    <scale android:fromXScale="1.0" android:toXScale=".5"
+           android:fromYScale="1.0" android:toYScale=".5"
+           android:pivotX="50%p" android:pivotY="50%p"
+           android:duration="@android:integer/config_mediumAnimTime" />
+</set>
+
 <!-- This version zooms the new non-wallpaper down on top of the
      wallpaper.  The wallpaper here just stays fixed behind. -->
+<!--
 <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:interpolator="@anim/decelerate_interpolator"
         android:zAdjustment="top">
@@ -29,6 +41,7 @@
     <alpha android:fromAlpha="1.0" android:toAlpha="0"
             android:duration="@android:integer/config_mediumAnimTime"/>
 </set>
+-->
 
 <!-- This version is a variation on the inter-activity slide that
     also scales the wallpaper. -->
diff --git a/core/res/res/anim/wallpaper_open_enter.xml b/core/res/res/anim/wallpaper_open_enter.xml
index cf27cf0458330..7fe7e1efde1ac 100644
--- a/core/res/res/anim/wallpaper_open_enter.xml
+++ b/core/res/res/anim/wallpaper_open_enter.xml
@@ -17,8 +17,20 @@
 */
 -->
 
+<!-- This version zooms the new non-wallpaper down on top of the
+     wallpaper, without zooming the wallpaper itself. -->
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+        android:interpolator="@anim/decelerate_interpolator"
+        android:detachWallpaper="true">
+    <scale android:fromXScale=".5" android:toXScale="1.0"
+           android:fromYScale=".5" android:toYScale="1.0"
+           android:pivotX="50%p" android:pivotY="50%p"
+           android:duration="@android:integer/config_mediumAnimTime" />
+</set>
+
 <!-- This version zooms the new non-wallpaper up off the wallpaper the
      wallpaper.  The wallpaper here just stays fixed behind. -->
+<!--
 <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:interpolator="@anim/decelerate_interpolator"
         android:zAdjustment="top">
@@ -29,6 +41,7 @@
     <alpha android:fromAlpha="0.0" android:toAlpha="1.0"
             android:duration="@android:integer/config_mediumAnimTime"/>
 </set>
+-->
 
 <!-- This version is a variation on the inter-activity slide that
     also scales the wallpaper. -->
diff --git a/core/res/res/anim/wallpaper_open_exit.xml b/core/res/res/anim/wallpaper_open_exit.xml
index b7a539c1fc412..9489c6d28729f 100644
--- a/core/res/res/anim/wallpaper_open_exit.xml
+++ b/core/res/res/anim/wallpaper_open_exit.xml
@@ -17,8 +17,22 @@
 */
 -->
 
+<!-- This version zooms the new non-wallpaper down on top of the
+     wallpaper, without zooming the wallpaper itself. -->
+<set xmlns:android="http://schemas.android.com/apk/res/android"
+        android:interpolator="@anim/decelerate_interpolator"
+        android:zAdjustment="top">
+    <scale android:fromXScale="1.0" android:toXScale="2.0"
+           android:fromYScale="1.0" android:toYScale="2.0"
+           android:pivotX="50%p" android:pivotY="50%p"
+           android:duration="@android:integer/config_mediumAnimTime" />
+    <alpha android:fromAlpha="1.0" android:toAlpha="0"
+            android:duration="@android:integer/config_mediumAnimTime"/>
+</set>
+
 <!-- This version zooms the new non-wallpaper down on top of the
      wallpaper. -->
+<!--
 <set xmlns:android="http://schemas.android.com/apk/res/android"
         android:interpolator="@anim/decelerate_interpolator">
     <scale android:fromXScale="1.0" android:toXScale="2.0"
@@ -26,6 +40,7 @@
            android:pivotX="50%p" android:pivotY="50%p"
            android:duration="@android:integer/config_mediumAnimTime" />
 </set>
+-->
 
 <!-- This version is a variation on the inter-activity slide that
     also scales the wallpaper. -->
diff --git a/core/res/res/values/attrs.xml b/core/res/res/values/attrs.xml
index 193fdb2bbe38e..df2a715d35b16 100644
--- a/core/res/res/values/attrs.xml
+++ b/core/res/res/values/attrs.xml
@@ -2639,6 +2639,9 @@
                  content for the duration of the animation. -->
             <enum name="bottom" value="-1" />
         </attr>
+        <!-- Special option for window animations: if this window is on top
+             of a wallpaper, don't animate the wallpaper with it. -->
+        <attr name="detachWallpaper" format="boolean" />
     </declare-styleable>
 
     <declare-styleable name="RotateAnimation">
diff --git a/core/res/res/values/public.xml b/core/res/res/values/public.xml
index 4d23ef4ef6ac1..305e415e793cb 100644
--- a/core/res/res/values/public.xml
+++ b/core/res/res/values/public.xml
@@ -1170,6 +1170,7 @@
   <public type="attr" name="detailColumn" />
   <public type="attr" name="detailSocialSummary" />
   <public type="attr" name="thumbnail" />
+  <public type="attr" name="detachWallpaper" />
 
   <public type="style" name="Theme.Wallpaper" />
   <public type="style" name="Theme.Wallpaper.NoTitleBar" />
diff --git a/services/java/com/android/server/WindowManagerService.java b/services/java/com/android/server/WindowManagerService.java
index 38d2304fbcb4a..f742f9fa023e0 100644
--- a/services/java/com/android/server/WindowManagerService.java
+++ b/services/java/com/android/server/WindowManagerService.java
@@ -7320,18 +7320,22 @@ public class WindowManagerService extends IWindowManager.Stub
             // are currently targeting.
             if (mAttrs.type == TYPE_WALLPAPER && mLowerWallpaperTarget == null
                     && mWallpaperTarget != null) {
-                if (mWallpaperTarget.mHasLocalTransformation) {
+                if (mWallpaperTarget.mHasLocalTransformation &&
+                        mWallpaperTarget.mAnimation != null &&
+                        !mWallpaperTarget.mAnimation.getDetachWallpaper()) {
                     attachedTransformation = mWallpaperTarget.mTransformation;
+                    if (DEBUG_WALLPAPER && attachedTransformation != null) {
+                        Log.v(TAG, "WP target attached xform: " + attachedTransformation);
+                    }
                 }
                 if (mWallpaperTarget.mAppToken != null &&
-                        mWallpaperTarget.mAppToken.hasTransformation) {
+                        mWallpaperTarget.mAppToken.hasTransformation &&
+                        mWallpaperTarget.mAppToken.animation != null &&
+                        !mWallpaperTarget.mAppToken.animation.getDetachWallpaper()) {
                     appTransformation = mWallpaperTarget.mAppToken.transformation;
-                }
-                if (DEBUG_WALLPAPER && attachedTransformation != null) {
-                    Log.v(TAG, "WP target attached xform: " + attachedTransformation);
-                }
-                if (DEBUG_WALLPAPER && appTransformation != null) {
-                    Log.v(TAG, "WP target app xform: " + appTransformation);
+                    if (DEBUG_WALLPAPER && appTransformation != null) {
+                        Log.v(TAG, "WP target app xform: " + appTransformation);
+                    }
                 }
             }