1 /* 2 * Copyright (C) 2007 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.apis.app; 18 19 // Need the following import to get access to the app resources, since this 20 // class is in a sub-package. 21 import com.example.android.apis.R; 22 23 import android.app.Notification; 24 import android.app.NotificationManager; 25 import android.app.PendingIntent; 26 import android.app.Service; 27 import android.content.Intent; 28 import android.os.Binder; 29 import android.os.ConditionVariable; 30 import android.os.IBinder; 31 import android.os.Parcel; 32 import android.os.RemoteException; 33 34 /** 35 * This is an example of service that will update its status bar balloon 36 * every 5 seconds for a minute. 37 * 38 */ 39 public class NotifyingService extends Service { 40 41 // Use a layout id for a unique identifier 42 private static int MOOD_NOTIFICATIONS = R.layout.status_bar_notifications; 43 44 // variable which controls the notification thread 45 private ConditionVariable mCondition; 46 47 @Override onCreate()48 public void onCreate() { 49 mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 50 51 // Start up the thread running the service. Note that we create a 52 // separate thread because the service normally runs in the process's 53 // main thread, which we don't want to block. 54 Thread notifyingThread = new Thread(null, mTask, "NotifyingService"); 55 mCondition = new ConditionVariable(false); 56 notifyingThread.start(); 57 } 58 59 @Override onDestroy()60 public void onDestroy() { 61 // Cancel the persistent notification. 62 mNM.cancel(MOOD_NOTIFICATIONS); 63 // Stop the thread from generating further notifications 64 mCondition.open(); 65 } 66 67 private Runnable mTask = new Runnable() { 68 public void run() { 69 for (int i = 0; i < 4; ++i) { 70 showNotification(R.drawable.stat_happy, 71 R.string.status_bar_notifications_happy_message); 72 if (mCondition.block(5 * 1000)) 73 break; 74 showNotification(R.drawable.stat_neutral, 75 R.string.status_bar_notifications_ok_message); 76 if (mCondition.block(5 * 1000)) 77 break; 78 showNotification(R.drawable.stat_sad, 79 R.string.status_bar_notifications_sad_message); 80 if (mCondition.block(5 * 1000)) 81 break; 82 } 83 // Done with our work... stop the service! 84 NotifyingService.this.stopSelf(); 85 } 86 }; 87 88 @Override onBind(Intent intent)89 public IBinder onBind(Intent intent) { 90 return mBinder; 91 } 92 showNotification(int moodId, int textId)93 private void showNotification(int moodId, int textId) { 94 // In this sample, we'll use the same text for the ticker and the expanded notification 95 CharSequence text = getText(textId); 96 97 // Set the icon, scrolling text and timestamp. 98 // Note that in this example, we pass null for tickerText. We update the icon enough that 99 // it is distracting to show the ticker text every time it changes. We strongly suggest 100 // that you do this as well. (Think of of the "New hardware found" or "Network connection 101 // changed" messages that always pop up) 102 Notification notification = new Notification(moodId, null, System.currentTimeMillis()); 103 104 // The PendingIntent to launch our activity if the user selects this notification 105 PendingIntent contentIntent = PendingIntent.getActivity(this, 0, 106 new Intent(this, NotifyingController.class), 0); 107 108 // Set the info for the views that show in the notification panel. 109 notification.setLatestEventInfo(this, getText(R.string.status_bar_notifications_mood_title), 110 text, contentIntent); 111 112 // Send the notification. 113 // We use a layout id because it is a unique number. We use it later to cancel. 114 mNM.notify(MOOD_NOTIFICATIONS, notification); 115 } 116 117 // This is the object that receives interactions from clients. See 118 // RemoteService for a more complete example. 119 private final IBinder mBinder = new Binder() { 120 @Override 121 protected boolean onTransact(int code, Parcel data, Parcel reply, 122 int flags) throws RemoteException { 123 return super.onTransact(code, data, reply, flags); 124 } 125 }; 126 127 private NotificationManager mNM; 128 } 129