从android中的通知栏启动一个应用程序

Question

我有一个应用程序,我希望在我的应用程序运行时将我的应用程序图标显示到通知栏,我还希望当用户点击通知栏中显示的应用程序图标时,我的应用程序将打开.这该怎么做？请帮忙!

Answer 1

要创建状态栏通知,请在onCreate方法中执行此操作:

1. 获取NotificationManager的引用:

     String ns = Context.NOTIFICATION_SERVICE;
     NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);
   

2. 实例化通知:

     int icon = R.drawable.notification_icon;
     CharSequence tickerText = "Hello";
     long when = System.currentTimeMillis();
   
     Notification notification = new Notification(icon, tickerText, when);
   

3. 定义通知的扩展消息和意图:

     Context context = getApplicationContext();
     CharSequence contentTitle = "My notification";
     CharSequence contentText = "Hello World!";
     Intent notificationIntent = new Intent(this, MyClass.class);
     PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);
   
     notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);
   

4. 将通知传递给NotificationManager:

     private static final int HELLO_ID = 1;
   
     mNotificationManager.notify(HELLO_ID, notification);
   

   而已.您的用户现已收到通知.

Answer 2

已接受的答案已弃用.以下是从谷歌文档中显示对话框的方法.

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this).setSmallIcon(R.drawable
            .logo_listy).setContentTitle("My notification").setContentText("Hello World!");

    Intent resultIntent = new Intent(this, ResultActivity.class);
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
    stackBuilder.addParentStack(ResultActivity.class);
    stackBuilder.addNextIntent(resultIntent);
    PendingIntent resultPendingIntent =
            stackBuilder.getPendingIntent(0, PendingIntent.FLAG_UPDATE_CURRENT);
    mBuilder.setContentIntent(resultPendingIntent);

    NotificationManager mNotificationManager =
            (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    mNotificationManager.notify(0, mBuilder.build());

Answer 3

您需要发布带有待处理意图的通知，其中包含启动应用程序的意图。请参阅http://developer.android.com/guide/topics/ui/notifiers/notifications.html了解一般操作方法，并参阅http://javablogs.com/Jump.action?id=628173了解您可能遇到的陷阱掉进。