1 /* 2 * Copyright (C) 2013 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.example.android.supportv4.content; 18 19 //BEGIN_INCLUDE(complete) 20 import android.app.IntentService; 21 import android.content.Intent; 22 import android.os.SystemClock; 23 import android.util.Log; 24 25 public class SimpleWakefulService extends IntentService { 26 public SimpleWakefulService() { 27 super("SimpleWakefulService"); 28 } 29 30 @Override 31 protected void onHandleIntent(Intent intent) { 32 // At this point SimpleWakefulReceiver is still holding a wake lock 33 // for us. We can do whatever we need to here and then tell it that 34 // it can release the wakelock. This sample just does some slow work, 35 // but more complicated implementations could take their own wake 36 // lock here before releasing the receiver's. 37 // 38 // Note that when using this approach you should be aware that if your 39 // service gets killed and restarted while in the middle of such work 40 // (so the Intent gets re-delivered to perform the work again), it will 41 // at that point no longer be holding a wake lock since we are depending 42 // on SimpleWakefulReceiver to that for us. If this is a concern, you can 43 // acquire a separate wake lock here. 44 for (int i=0; i<5; i++) { 45 Log.i("SimpleWakefulReceiver", "Running service " + (i+1) 46 + "/5 @ " + SystemClock.elapsedRealtime()); 47 try { 48 Thread.sleep(5000); 49 } catch (InterruptedException e) { 50 } 51 } 52 Log.i("SimpleWakefulReceiver", "Completed service @ " + SystemClock.elapsedRealtime()); 53 SimpleWakefulReceiver.completeWakefulIntent(intent); 54 } 55 } 56 //END_INCLUDE(complete) 57
