| /* |
| * Copyright 2013 Google Inc. |
| * |
| * 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.example.android.basicsyncadapter; |
| |
| import android.app.Service; |
| import android.content.Intent; |
| import android.os.IBinder; |
| import android.util.Log; |
| |
| /** Service to handle sync requests. |
| * |
| * <p>This service is invoked in response to Intents with action android.content.SyncAdapter, and |
| * returns a Binder connection to SyncAdapter. |
| * |
| * <p>For performance, only one sync adapter will be initialized within this application's context. |
| * |
| * <p>Note: The SyncService itself is not notified when a new sync occurs. It's role is to |
| * manage the lifecycle of our {@link SyncAdapter} and provide a handle to said SyncAdapter to the |
| * OS on request. |
| */ |
| public class SyncService extends Service { |
| private static final String TAG = "SyncService"; |
| |
| private static final Object sSyncAdapterLock = new Object(); |
| private static SyncAdapter sSyncAdapter = null; |
| |
| /** |
| * Thread-safe constructor, creates static {@link SyncAdapter} instance. |
| */ |
| @Override |
| public void onCreate() { |
| super.onCreate(); |
| Log.i(TAG, "Service created"); |
| synchronized (sSyncAdapterLock) { |
| if (sSyncAdapter == null) { |
| sSyncAdapter = new SyncAdapter(getApplicationContext(), true); |
| } |
| } |
| } |
| |
| @Override |
| /** |
| * Logging-only destructor. |
| */ |
| public void onDestroy() { |
| super.onDestroy(); |
| Log.i(TAG, "Service destroyed"); |
| } |
| |
| /** |
| * Return Binder handle for IPC communication with {@link SyncAdapter}. |
| * |
| * <p>New sync requests will be sent directly to the SyncAdapter using this channel. |
| * |
| * @param intent Calling intent |
| * @return Binder handle for {@link SyncAdapter} |
| */ |
| @Override |
| public IBinder onBind(Intent intent) { |
| return sSyncAdapter.getSyncAdapterBinder(); |
| } |
| } |