How to implement scrollbar with thumb for fast scrolling

Question

I need to implement a screen having around 1000 thumbnails. This screen should support gesture based scrolling as well as fast scrolling using a scrollbar with thumb. So if user

Answer 1

See this answer. It gives details about how to customize the look of the fast scroll thumb on API level >= 11.

Answer 2

ListView thumb support:

ListView vList = ...;
vList.setFastScrollEnabled(true);

GridView thumb support:

GridView vGrid = ...;
vGrid .setFastScrollEnabled(true);

Your can also divide content into sections. In order to to that the adapter must implement following interface:

android.widget.SectionIndexer