I read a lot about this problem on Stackoverflow but not of the Helps her works at my problem.
In my Source Code I have this.
vibretor = (Vibrator) this.getSystemService(VIBRATOR_SERVICE);
vibretor.vibrate(600);
and in the AndroidManifeste.xml I have the Permission
<uses-permission android:name="android.permission.VIBRATE"/>
this is all right I think because i looked it up at http://developer.android.com
but it does not worke at all :( So have someone of you a idea how I can get it working?
My testing Devices are: Eee Pad Transformer, Samsung Galaxy S2 and Samsung Galaxy Tab 10.1