I'm new to Android, so don't judge me strict. Yesterday I've created a project, which implements an Action Bar. The day before yesterday I did an example with Fragments. And I wanted to make this work on API lower than 11, but I couldn't. I have installed Android Compatibility package and copied the .jar file into 'libs' directory, which I created in project main folder. In Java Build Path I've added the .jar file to Libraries... and that's all. I really don't know what else I can do. Maybe somebody played with this compatibility?
Thanks in advance.