A variety of work on animations.

- The lock screen now fades in and out.
- Fixed a bug where we would accidentally freeze the screen when switching
  to an activity with a different orientation than the current (but
  the screen itself is in the current orientation).  This would mess up
  the animations on the car dock.
- New API to force a particular animation for an activity transition
  (untested).
- New wallpaper animations.
- Resources now uses the next API version when in a development build,
  to help applications being developed against such builds.

Change-Id: I2d9998f8400967ff09a04d693dc4ce55f0dbef5b
diff --git a/core/java/android/app/Activity.java b/core/java/android/app/Activity.java
index 4561899..8755477 100644
--- a/core/java/android/app/Activity.java
+++ b/core/java/android/app/Activity.java
@@ -3015,6 +3015,23 @@
     }
 
     /**
+     * Call immediately after one of the flavors of {@link #startActivity(Intent)}
+     * or {@link #finish} to specify an explicit transition animation to
+     * perform next.
+     * @param enterAnim A resource ID of the animation resource to use for
+     * the incoming activity.
+     * @param exitAnim A resource ID of the animation resource to use for
+     * the outgoing activity.
+     */
+    public void overridePendingTransition(int enterAnim, int exitAnim) {
+        try {
+            ActivityManagerNative.getDefault().overridePendingTransition(
+                    mToken, getPackageName(), enterAnim, exitAnim);
+        } catch (RemoteException e) {
+        }
+    }
+    
+    /**
      * Call this to set the result that your activity will return to its
      * caller.
      *