Android: Enable Scrollbars in Custom View

Question

I have implemented a custom Layout that extends RelativeLayout. It displays lots of different elements that are created at run-time and is scrollable in both dimensions usin

Answer 1

Just had this same problem and finally figured it out.

The "problem" is that you are extending RelativeLayout, which is a subclass of ViewGroup. I found that I had no problem doing what you described in your question to get a custom View to display scrollbars, but when I extended ViewGroup or one of its subclasses, no scrollbars appeared.

I finally remembered that ViewGroups, by default, don't draw themselves. I added one line to my custom ViewGroup constructor: setWillNotDraw(false);

What do you know, the scrollbars appeared!

Hope that helps.