26.1 Intercepting Touch Events

Touch events can be intercepted by a view object through the registration of an onTouchListener event listener and the implementation of the corresponding onTouch() callback method. The following code, for example, ensures that any touches on a ConstraintLayout view instance named myLayout result in a call to the onTouch() method:

myLayout.setOnTouchListener(

       new ConstraintLayout.OnTouchListener() {

              public boolean onTouch(View v, MotionEvent m) {

                     // Perform tasks here

                     return true;

        &...