Android: class not found exception: android.support.v4.app.FragmentPager
android, classnotfoundexception
Solution
You have to add compatibility library by right clicking your project and selecting Android Tools -> Add Compatibility Library. Once its added, clean your project and build again.
Problem
In my code I import `android.support.v4.view.ViewPager` but I get a `ClassNotFoundException: android.support.v4.view.ViewPager` when I set content view to this xml file: ``` ... <android.support.v4.app.FragmentPager android:layout_height="0px" android:layout_width="match_parent" android:layout_weight="1" android:id="@+id/pager"> </android.support.v4.app.FragmentPager> ... ```