Custom (gradient) background of ActionBar Compat

Question

I am using Action Bar Compat so that my action bar with navigation drawer was backward compatible down to API level 9 and I want to change the background of the action bar.

Answer 1

I also use that sample code from Android Developer and use the gradient XML as like yours.

I found the different of this file between yours and mine is android:shape="line" / android:shape="rectangle".

So I try to change my rectangle to line. My app also occurs the same exception and the OS is restarted. Maybe the shape is the key point.