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vscroll1.setOnScrollChangeListener(new View.OnScrollChangeListener() {

            @Override

            public void onScrollChange(View v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {

                // Calculate the scroll progress as a percentage

                int scrollProgress = (scrollY * 100) / vscroll1.getMaxScrollAmount();

                // Set the text of textview1 to the scroll progress as an integer value

                textview1.setText(String.valueOf(scrollProgress));

            }

        });