Detect if a ScrollView is scrolling up or down - Android

Question

I have one ScrollView with one LinearLayout with TextViews. I want to detect when ScrollView is scrolling up or down to hide/show ActionBar.

Answer 1

you need to create a class that extends ScrollView

public class ExampleScrollView extends ScrollView 

and then Override onScrollChanged that gives you the old and new scroll positions and from there you can detect which direction

protected void onScrollChanged(int l, int t, int oldl, int oldt)