I just got some kind of error when trying to using Action Bar Compat support library to my project, I don\'t know what\'s wrong, because I have followed the instructions from th
As in the instructions you mentioned, please make sure to follow this step to add .jar files instead of directly go to Properties > Java Build Path > Libraries to add them.
In the new library project, expand the libs/ folder, right-click each .jar file and select Build Path > Add to Build Path. For example, when creating the the v7 appcompat project, add both the android-support-v4.jar and android-support-v7-appcompat.jar files to the build path.