Android notification and vibrate

vibrate permission <uses-permission android:name="android.permission.VIBRATE" />

code
			NotificationManager manager = (NotificationManager) this
					.getSystemService(NOTIFICATION_SERVICE);
			Notification notification = new Notification(
					R.drawable.ic_launcher, "Hello from service",
					System.currentTimeMillis());
			Intent click_intent = new Intent(ServiceStart.this, StopWatch.class);

			notification.setLatestEventInfo(Views.STOPWATCH_CONTEXT
					.getApplicationContext(), "contentTitle", "contentText",
					PendingIntent.getActivity(Views.STOPWATCH_CONTEXT, 1,
							click_intent, 0));

			notification.flags = notification.flags
					| notification.FLAG_AUTO_CANCEL;

			// vibration (sleep, stat, sleep, start, sleep)
			if (States.notification_vibration == true) {
				long[] vibrate = new long[] { 100, 300, 100, 300, 100 };
				notification.vibrate = vibrate;
			}

			manager.notify(States.notification_timer_id, notification);