Only restore the bits for wallpapers that aren't built in.

1 files changed, 67 insertions, 0 deletions

diff --git a/services/java/com/android/server/SystemBackupAgent.java b/services/java/com/android/server/SystemBackupAgent.java
new file mode 100644
index 0000000..b681961
--- /dev/null
+++ b/services/java/com/android/server/SystemBackupAgent.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server;
+
+import android.backup.AbsoluteFileBackupHelper;
+import android.backup.BackupDataInput;
+import android.backup.BackupDataInputStream;
+import android.backup.BackupDataOutput;
+import android.backup.BackupHelper;
+import android.backup.BackupHelperAgent;
+import android.content.Context;
+import android.os.ParcelFileDescriptor;
+import android.os.ServiceManager;
+import android.os.SystemService;
+import android.util.Log;
+
+import java.io.File;
+import java.io.IOException;
+
+/**
+ * Backup agent for various system-managed data
+ */
+public class SystemBackupAgent extends BackupHelperAgent {
+    private static final String TAG = "SystemBackupAgent";
+
+    private static final String WALLPAPER_IMAGE = "/data/data/com.android.settings/files/wallpaper";
+    private static final String WALLPAPER_INFO = "/data/system/wallpaper_info.xml";
+
+    @Override
+    public void onCreate() {
+        addHelper("wallpaper", new AbsoluteFileBackupHelper(SystemBackupAgent.this,
+                new String[] { WALLPAPER_IMAGE, WALLPAPER_INFO }));
+    }
+
+    @Override
+    public void onRestore(BackupDataInput data, int appVersionCode, ParcelFileDescriptor newState)
+            throws IOException {
+        boolean success = false;
+        try {
+            super.onRestore(data, appVersionCode, newState);
+
+            WallpaperService wallpaper = (WallpaperService)ServiceManager.getService(
+                    Context.WALLPAPER_SERVICE);
+            wallpaper.settingsRestored();
+        } catch (IOException ex) {
+            // If there was a failure, delete everything for the wallpaper, this is too aggresive,
+            // but this is hopefully a rare failure.
+            Log.d(TAG, "restore failed", ex);
+            (new File(WALLPAPER_IMAGE)).delete();
+            (new File(WALLPAPER_INFO)).delete();
+        }
+    }
+}