commit 6b53fd28e5de1ef5263b4cffaf7c5b6d99005e76
author longyu.huang <longyu.huang@ck-telecom.com> Wed May 06 01:46:23 2015 -0700
committer longyu.huang <longyu.huang@ck-telecom.com> Wed May 06 01:57:36 2015 -0700
tree 03c9ec510dc8162033326db6110a7902c155735d
parent e8d735c70a594abdfbf9ff16ef2ccfc9b87a3635

optimize wallpaper load,avoid show black wallpaper.

[Preconditions]
open auto-rotate

[Procedures]
1.enter Contacts app, and rotate 90 degrees to the right
2.press power key to lock screen,and unlock
3.rotare 90 degrees to the left and exit Contacts app
4.the wallpaper will be black first,then show the really wallpaper

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

diff --git a/packages/SystemUI/src/com/android/systemui/ImageWallpaper.java b/packages/SystemUI/src/com/android/systemui/ImageWallpaper.java
index 7c725b3..81f6d56 100644
--- a/packages/SystemUI/src/com/android/systemui/ImageWallpaper.java
+++ b/packages/SystemUI/src/com/android/systemui/ImageWallpaper.java
@@ -236,7 +236,9 @@
                     Log.d(TAG, "Visibility changed to visible=" + visible);
                 }
                 mVisible = visible;
-                drawFrame();
+                if (visible) {
+                    drawFrame();
+                }
             }
         }