Android Development: How To Use onKeyUp?

Question

I\'m new to Android development and I can\'t seem to find a good guide on how to use an onKeyUp listener.

In my app, I have a big EditText,

Answer 1

Writing this out of my head but it should be among the following lines:

text.setKeyListener(new KeyListener() {
    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {


        if(keyCode == KeyEvent.KEYCODE_0) dosomething // pick the custom key from keyEvent


        return super.onKeyUp(keyCode, event);
    }
});