Android Error [Attempt to invoke virtual method 'void android.app.ActionBar' on a null object reference]

Question

I have a code module which implements viewpager with navigation drawer, however, when I run the code I get the following error

01-26 09:20:02.958: D/AndroidR         


        

Answer 1

If you are using android.app.ActionBar and android.app.Activity you should change the app theme in application tag:

< application
     android:theme="@android:style/Theme.Holo.Light">