how to check when edittext clicked android

1edittext.setOnTouchListener(new OnTouchListener() {
2    @Override
3    public boolean onTouch(View v, MotionEvent event) {
4        if(MotionEvent.ACTION_UP == event.getAction()) {
5            mQuaternion_1.setText("" + mQ1);
6        }
7
8        return true; // return is important...
9    }
10});