1 files changed, 84 insertions, 0 deletions
diff --git a/common/src/com/android/tv/common/util/SharedPreferencesUtils.java b/common/src/com/android/tv/common/util/SharedPreferencesUtils.java
new file mode 100644
index 00000000..e8bfe61b
--- /dev/null
+++ b/common/src/com/android/tv/common/util/SharedPreferencesUtils.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (C) 2015 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.tv.common.util;
+
+import android.content.Context;
+import android.os.AsyncTask;
+import android.preference.PreferenceManager;
+import com.android.tv.common.CommonConstants;
+
+/** Static utilities for {@link android.content.SharedPreferences} */
+public final class SharedPreferencesUtils {
+    // Note that changing the preference name will reset the preference values.
+    public static final String SHARED_PREF_FEATURES = "sharePreferencesFeatures";
+    public static final String SHARED_PREF_BROWSABLE = "browsable_shared_preference";
+    public static final String SHARED_PREF_WATCHED_HISTORY = "watched_history_shared_preference";
+    public static final String SHARED_PREF_DVR_WATCHED_POSITION =
+            "dvr_watched_position_shared_preference";
+    public static final String SHARED_PREF_AUDIO_CAPABILITIES =
+            CommonConstants.BASE_PACKAGE + ".audio_capabilities";
+    public static final String SHARED_PREF_RECURRING_RUNNER = "sharedPreferencesRecurringRunner";
+    public static final String SHARED_PREF_EPG = "epg_preferences";
+    public static final String SHARED_PREF_SERIES_RECORDINGS = "seriesRecordings";
+    /** No need to pre-initialize. It's used only on the worker thread. */
+    public static final String SHARED_PREF_CHANNEL_LOGO_URIS = "channelLogoUris";
+    /** Stores the UI related settings */
+    public static final String SHARED_PREF_UI_SETTINGS = "ui_settings";
+
+    public static final String SHARED_PREF_PREVIEW_PROGRAMS = "previewPrograms";
+
+    private static boolean sInitializeCalled;
+
+    /**
+     * {@link android.content.SharedPreferences} loads the preference file when {@link
+     * Context#getSharedPreferences(String, int)} is called for the first time. Call {@link
+     * Context#getSharedPreferences(String, int)} as early as possible to avoid the ANR due to the
+     * file loading.
+     */
+    public static synchronized void initialize(final Context context, final Runnable postTask) {
+        if (!sInitializeCalled) {
+            sInitializeCalled = true;
+            new AsyncTask<Void, Void, Void>() {
+                @Override
+                protected Void doInBackground(Void... params) {
+                    PreferenceManager.getDefaultSharedPreferences(context);
+                    context.getSharedPreferences(SHARED_PREF_FEATURES, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(SHARED_PREF_BROWSABLE, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(SHARED_PREF_WATCHED_HISTORY, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(
+                            SHARED_PREF_DVR_WATCHED_POSITION, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(
+                            SHARED_PREF_AUDIO_CAPABILITIES, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(
+                            SHARED_PREF_RECURRING_RUNNER, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(SHARED_PREF_EPG, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(
+                            SHARED_PREF_SERIES_RECORDINGS, Context.MODE_PRIVATE);
+                    context.getSharedPreferences(SHARED_PREF_UI_SETTINGS, Context.MODE_PRIVATE);
+                    return null;
+                }
+
+                @Override
+                protected void onPostExecute(Void result) {
+                    postTask.run();
+                }
+            }.execute();
+        }
+    }
+
+    private SharedPreferencesUtils() {}
+}