@SuppressLint("SetTextI18n")
        private void init() {

            initView();

            setLongClickable(true);
            butt.setClickable(false);
            butt.setLongClickable(false);
            butt.setText("0");

            super.setOnClickListener(v -> markButton(this));
        }
These variables are accessed from the derived class 'CalculateButton'
main/src/main/java/cgeo/geocaching/ui/CalculatedCoordinateInputGuideView.java