Seriously, i don\'t know what to do to solve this problem. My android project was working fine, until i needed to import a library with Maven. Since that, everything starte
Make sure that any compatibility lib jars that you're using in your main project (like android-support-v4.jar) are the same versions as those used in any of the projects that your main project references.
I had this same problem and what solved it was to copy and paste the android-support-v4.jar from another library project (that my main project was referencing) and pasting it into my main project's /libs folder.
I did the following steps to resolve the issue on Android Studio.
recompile and it should work.