NotificationCompat.Builder builder =newNotificationCompat.Builder(MainActivity.this);

builder.setSmallIcon(R.drawable.gangqin);

builder.setContentTitle("哇,好開心哦");

builder.setContentText("這么多的tuisongixoaxi");

Notification notification = builder.build();

NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);

manager.notify(NOTIFICATION_ID,notification);