Make sure to properly default the screen size during wallpaper restore

The wallpaper service claims a desired width/height of (-1,-1) during
initial setup, so look to the default display's metrics if necessary.

Change-Id: I341f12fb7b0b9d6b7761c277f23fc68fa5355256

1 files changed, 9 insertions, 0 deletions

diff --git a/core/java/android/app/backup/WallpaperBackupHelper.java b/core/java/android/app/backup/WallpaperBackupHelper.java
index d70b3d3..6539711 100644
--- a/core/java/android/app/backup/WallpaperBackupHelper.java
+++ b/core/java/android/app/backup/WallpaperBackupHelper.java
@@ -21,6 +21,8 @@ import android.content.Context;
 import android.graphics.BitmapFactory;
 import android.os.ParcelFileDescriptor;
 import android.util.Slog;
+import android.view.Display;
+import android.view.WindowManager;
 
 import java.io.File;
 
@@ -65,6 +67,13 @@ public class WallpaperBackupHelper extends FileBackupHelperBase implements Backu
         mDesiredMinWidth = (double) wpm.getDesiredMinimumWidth();
         mDesiredMinHeight = (double) wpm.getDesiredMinimumHeight();
 
+        if (mDesiredMinWidth <= 0 || mDesiredMinHeight <= 0) {
+            WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
+            Display d = wm.getDefaultDisplay();
+            mDesiredMinWidth = d.getWidth();
+            mDesiredMinHeight = d.getHeight();
+        }
+
         if (DEBUG) {
             Slog.d(TAG, "dmW=" + mDesiredMinWidth + " dmH=" + mDesiredMinHeight);
         }