Initial AOSP WallpaperPicker2 commit.
Change-Id: If8770266dd3ff0d7dc3ee97820e815e39312a7ff
diff --git a/src/com/android/wallpaper/backup/MissingHashCodeGenerator.java b/src/com/android/wallpaper/backup/MissingHashCodeGenerator.java
new file mode 100755
index 0000000..f934fe7
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+++ b/src/com/android/wallpaper/backup/MissingHashCodeGenerator.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2017 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.wallpaper.backup;
+
+import android.annotation.SuppressLint;
+import android.app.WallpaperManager;
+import android.content.BroadcastReceiver;
+import android.content.Context;
+import android.content.Intent;
+
+import com.android.wallpaper.compat.BuildCompat;
+import com.android.wallpaper.module.Injector;
+import com.android.wallpaper.module.InjectorProvider;
+import com.android.wallpaper.module.WallpaperPreferences;
+
+/**
+ * Generates hash codes for currently set static image wallpapers on N+ devices where they are
+ * missing because older versions of the app did not generate and set them.
+ * <p>
+ * Static image wallpaper hash codes are necessary on N+ devices for the purposes of backup &
+ * restore because N+ WallpaperManager integer IDs are local to physical devices and not backed up
+ * and restored on the framework side.
+ */
+@SuppressLint("ServiceCast")
+public class MissingHashCodeGenerator extends BroadcastReceiver {
+
+ @Override
+ public void onReceive(Context context, Intent intent) {
+ // This receiver is a no-op on pre-N Android and should only respond to a MY_PACKAGE_REPLACED
+ // intent.
+ if (!intent.getAction().equals(Intent.ACTION_MY_PACKAGE_REPLACED)
+ || !BuildCompat.isAtLeastN()) {
+ return;
+ }
+
+ WallpaperManager wallpaperManager = WallpaperManager.getInstance(context);
+
+ // Make this receiver a no-op if running in the context of profile where wallpapers are not
+ // supported.
+ if (!wallpaperManager.isWallpaperSupported()) {
+ return;
+ }
+
+ Injector injector = InjectorProvider.getInjector();
+ WallpaperPreferences wallpaperPreferences = injector.getPreferences(context);
+ // Delegate the longer-running work of generating missing hash codes to a JobScheduler job if
+ // there's no hash codes saved.
+ if (wallpaperPreferences.getHomeWallpaperHashCode() != 0
+ && wallpaperPreferences.getLockWallpaperHashCode() != 0) {
+ return;
+ }
+
+ MissingHashCodeGeneratorJobService.schedule(context);
+ }
+}