[Android] How to create status bar notification?

To create a status bar notification:


1. Get a reference to the NotificationManager:

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

2. Instantiate the Notification:

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

Notification notification = new Notification(icon, tickerText, when);

3. Define the Notification's expanded message and Intent:

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. Pass the Notification to the NotificationManager:

private static final int HELLO_ID = 1;

mNotificationManager.notify(HELLO_ID, notification);
That's it. Your user has now been notified.

Reference:

• 狀態欄通知(status bar notification)
• Android Developer - Creating Status Bar Notification
• Android - 標題的狀態列