Android Vibrate on touch?

Question

I am trying to make my device vibrate when I touch an object on Screen. I am using this code:

 Vibrator v = (Vibrator) getSystemService(getApplicationContext().VIBRATOR_SERVICE); 
 v.vibrate(300);    

with the permission in the manifest file but I don't seem to get any results. Any suggestions? Also, my hardware supports vibrate.

Answer 1

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.

Answer 2

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"/>

Answer 3

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

@Override
public 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"/>