Get maximum HorizontalScrollView scroll amount

Question

I\'m adding floating arrows to my HorizontalScrollView which will let the user know that there are more item\'s outside of the current view.

What I need

Answer 1

The child of the horizontal scrollview should have the correct width. Try this

Log.e("ScrollWidth",Integer.toString(horizontalScrollview.getChildAt(0).getMeasuredWidth()-
        getWindowManager().getDefaultDisplay().getWidth()));

This should be the max scroll amount.

Put the following code in your onCreate method

ViewTreeObserver vto = scrollView.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
    @Override
    public void onGlobalLayout() {
        scrollView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        Log.e("ScrollWidth",Integer.toString(horizontalScrollview.getChildAt(0)
                .getMeasuredWidth()-getWindowManager().getDefaultDisplay().getWidth()));

    }
});