Set setOnScrollChangeListener
in a NestedScrollView
params to get
- NestedScrollView v (parent with scroll)
- int scrollY
- int oldScrollY
To detect whether the offset is at the bottom, it is necessary to obtain the value of content height v.getChildAt(0).getMeasuredHeight()
and compare the current scroll over the height of the parent, if you have the same value , it means that it has reached the end.
You can get the height with parent view with v.getMeasuredHeight()
NestedScrollView scroller = (NestedScrollView) findViewById(R.id.myScroll);
if (scroller != null) {
scroller.setOnScrollChangeListener(new NestedScrollView.OnScrollChangeListener() {
@Override
public void onScrollChange(NestedScrollView v, int scrollX, int scrollY, int oldScrollX, int oldScrollY) {
if (scrollY > oldScrollY) {
Log.i(TAG, "Scroll DOWN");
}
if (scrollY < oldScrollY) {
Log.i(TAG, "Scroll UP");
}
if (scrollY == 0) {
Log.i(TAG, "TOP SCROLL");
}
if (scrollY == ( v.getMeasuredHeight() - v.getChildAt(0).getMeasuredHeight() )) {
Log.i(TAG, "BOTTOM SCROLL");
}
}
});
}