Redraw static wallpapers when a redraw is needed.

Bug: 7242944
Change-Id: I913e3486de77468e73da79b4d83be3cf4f1547dd

Author: Craig Mautner

packages/SystemUI/src/com/android/systemui/ImageWallpaper.java

@@ -261,6 +261,19 @@ public void onSurfaceChanged(SurfaceHolder holder, int format, int width, int he
             }
         }
 
+        @Override
+        public void onSurfaceRedrawNeeded(SurfaceHolder holder) {
+            if (DEBUG) {
+                Log.d(TAG, "onSurfaceRedrawNeeded:");
+            }
+            super.onSurfaceRedrawNeeded(holder);
+
+            synchronized (mLock) {
+                mRedrawNeeded = true;
+                drawFrameLocked();
+            }
+        }
+
         void drawFrameLocked() {
             if (!mVisible) {
                 if (DEBUG) {