scrollview on scroll listener android code example

Example 1: kotlin scrollView scroll listener

scrollView.getViewTreeObserver().addOnScrollChangedListener(new OnScrollChangedListener() {
    @Override
    public void onScrollChanged() {
        int scrollY = rootScrollView.getScrollY(); // For ScrollView
        int scrollX = rootScrollView.getScrollX(); // For HorizontalScrollView
        // DO SOMETHING WITH THE SCROLL COORDINATES
    }
});

Example 2: scrollview scroll programmatically android

nestedScrollView.fullScroll(View.FOCUS_UP);
nestedScrollView.smoothScrollTo(0,0);

Example 3: scrollview scroll programmatically android

nestedScrollView.fullScroll(View.FOCUS_DOWN);
nestedScrollView.fullScroll(View.FOCUS_UP);