More work on rotation animation.

Change-Id: Ib8206db98b68cb1e0b16e4c55d949e80ff31bd9f

Author: Dianne Hackborn

core/res/res/anim/screen_rotate_finish_exit.xml

@@ -24,12 +24,14 @@
             android:pivotX="50%" android:pivotY="50%"
             android:interpolator="@interpolator/accelerate_decelerate"
             android:fillEnabled="true"
-            android:fillBefore="false" android:fillAfter="true"
+            android:fillBefore="true" android:fillAfter="true"
             android:duration="@android:integer/config_shortAnimTime"/>
     <scale android:fromXScale="100%" android:toXScale="100%p"
             android:fromYScale="100%" android:toYScale="100%p"
             android:pivotX="50%" android:pivotY="50%"
             android:interpolator="@interpolator/accelerate_decelerate"
+            android:fillEnabled="true"
+            android:fillBefore="true" android:fillAfter="true"
             android:duration="@android:integer/config_mediumAnimTime" />
     <alpha android:fromAlpha="1.0" android:toAlpha="0"
             android:interpolator="@interpolator/accelerate_decelerate"

services/java/com/android/server/wm/BlackFrame.java

@@ -157,6 +157,14 @@ public void setMatrix(Matrix matrix) {
         }
     }
 
+    public void setAlpha(float alpha) {
+        for (int i=0; i<mBlackSurfaces.length; i++) {
+            if (mBlackSurfaces[i] != null) {
+                mBlackSurfaces[i].surface.setAlpha(alpha);
+            }
+        }
+    }
+
     public void clearMatrix() {
         for (int i=0; i<mBlackSurfaces.length; i++) {
             if (mBlackSurfaces[i] != null) {