1 /* 2 * Copyright (C) 2017 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.Activity; 24 import android.app.Notification; 25 import android.app.NotificationManager; 26 import android.app.PendingIntent; 27 import android.app.Service; 28 import android.content.Context; 29 import android.content.Intent; 30 import android.os.Bundle; 31 import android.os.IBinder; 32 import android.view.View; 33 import android.view.View.OnClickListener; 34 import android.widget.Button; 35 36 /** 37 * Example service that gets launched from a notification and runs in the background. 38 */ 39 public class NotificationBackgroundService extends Service { 40 @Override 41 public int onStartCommand(Intent intent, int flags, int startId) { 42 ((NotificationManager)getSystemService(Context.NOTIFICATION_SERVICE)) 43 .cancel(R.layout.notification_background_service); 44 stopSelf(startId); 45 return START_NOT_STICKY; 46 } 47 48 @Override 49 public IBinder onBind(Intent intent) { 50 return null; 51 } 52 53 /** 54 * Demo UI that allows the user to post the notification. 55 */ 56 public static class Controller extends Activity { 57 private NotificationManager mNM; 58 59 @Override 60 protected void onCreate(Bundle savedInstanceState) { 61 super.onCreate(savedInstanceState); 62 63 mNM = (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 64 65 setContentView(R.layout.notification_background_service); 66 67 Button button = (Button) findViewById(R.id.notify); 68 button.setOnClickListener(mNotify); 69 } 70 71 private void showNotification(CharSequence text) { 72 // The PendingIntent to launch our activity if the user selects this notification 73 PendingIntent contentIntent = PendingIntent.getService(this, 0, 74 new Intent(this, NotificationBackgroundService.class), 0); 75 76 // Set the info for the views that show in the notification panel. 77 Notification notification = new Notification.Builder(this) 78 .setSmallIcon(R.drawable.stat_sample) // the status icon 79 .setTicker(text) // the status text 80 .setWhen(System.currentTimeMillis()) // the time stamp 81 .setContentTitle(getText(R.string.notification_background_label)) // the label of the entry 82 .setContentText(text) // the contents of the entry 83 .setContentIntent(contentIntent) // The intent to send when the entry is clicked 84 .build(); 85 86 // Send the notification. 87 // We use a layout id because it is a unique number. We use it later to cancel. 88 mNM.notify(R.layout.notification_background_service, notification); 89 } 90 91 private OnClickListener mNotify = new OnClickListener() { 92 public void onClick(View v) { 93 showNotification("Selecting this will cause a background service to run."); 94 } 95 }; 96 } 97 } 98 99
