Android: static status bar notification

How to create a static status bar notification? Like in skype app or others... It must be visible while app is running, even if it runs in bac开发者_开发技巧kground.

Create a notification and include FLAG_ONGOING_EVENT in the set of flags. Note that when your application is finished, you should cancel the notification.

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