While loop in setOnTouchListener

Question

I want to do some action when button is pressed and stop those action when button is releasd. I have used the following code but it does not work. you may check my code here-

 ok = (Button)findViewById(R.id.button1);
 ok.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {

            my_var=true;
            if (event.getAction() == MotionEvent.ACTION_DOWN) {
                while(my_var) do_something();
            }else if (event.getAction() == MotionEvent.ACTION_UP) {
                my_var=false;
            }

            return true;
        }
    });

Is there any alternative solution for the above. Thanx in advance.

Answer 1

I think what you want is an AutoRepeatButton

Basically it's a class that extends Button and adds some scheduled callbacks (you can adjust the interval) that happen as long as the ACTION_DOWN MotionEvent is occurring.

There are a few implementations floating around but I like the following one the best:

https://stackoverflow.com/a/8463940/833647

Answer 2

To achieve so, you have to set my_var to false somewhere in the do_something method.