To create a status bar notification

1. Get a reference to the NotificationManager:

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1	String ns = Context.NOTIFICATION_SERVICE;

2	NotificationManager mNotificationManager = (NotificationManager) getSystemService(ns);

2. Instantiate the Notification:

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1	int icon = R.drawable.notification_icon;

2	CharSequence tickerText = "Hello";

3	long when = System.currentTimeMillis();

4

5

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

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

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1	Context context = getApplicationContext();

2	CharSequence contentTitle = "My notification";

3	CharSequence contentText = "Hello World!";

4	Intent notificationIntent = new Intent(this, MyClass.class);

5	PendingIntent contentIntent = PendingIntent.getActivity(this, 0, notificationIntent, 0);

6

7	notification.setLatestEventInfo(context, contentTitle, contentText, contentIntent);

4. Pass the Notification to the NotificationManager:

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1	private static final int HELLO_ID = 1;

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3

4	mNotificationManager.notify(HELLO_ID, notification);

User 는 이제 Notification 을 통보 받는다.

출처 : http://developer.android.com/guide/topics/ui/notifiers/notifications.html