Android Vibrate on touch?

According to this answer, you can perform haptic feedback (vibrate) without asking for any extra permissions. Look at performHapticFeedback method.

View view = findViewById(...)view.performHapticFeedback(HapticFeedbackConstants.VIRTUAL_KEY);

Note: I have not tested this code.

please try this :

Button b = (Button) findViewById(R.id.button1);    b.setOnTouchListener(new OnTouchListener() {        @Override        public boolean onTouch(View v, MotionEvent event) {            // TODO Auto-generated method stub            Vibrator vb = (Vibrator)   getSystemService(Context.VIBRATOR_SERVICE);            vb.vibrate(100);            return false;        }    });

and add this permission to manifest.xml

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

This will vibrate once, when user touches view (will not keep vibrating when user sliding his finger on the view!):

@Overridepublic boolean onTouch(View view, MotionEvent event) {    if(event.getAction() == MotionEvent.ACTION_DOWN) {        Vibrator v = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);        v.vibrate(VIBRATE_DURATION_MS);    }    return true;}

And as Ramesh said, allow permission in manifest:

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