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
onStartCommand(Intent intent, int flags, int startId)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
onBind(Intent intent)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
onCreate(Bundle savedInstanceState)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 
showNotification(CharSequence text)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