My fragment cannot be cast to android.support.v4.app.Fragment

Question

I created a very simple fragment to test my app and I got the following error message:

03-31 16:04:39.834: E/AndroidRuntime(7860): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.team3.domore/com.team3.domore.TabActivity}: java.lang.ClassCastException: com.team3.domore.SomeFrag cannot be cast to android.support.v4.app.Fragment 

My fragment is really simple...

import android.app.Fragment; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup;  public class SomeFrag extends Fragment {     @Override     public View onCreateView(LayoutInflater inflater, ViewGroup container,             Bundle savedInstanceState) {         return inflater.inflate(R.layout.alarm_frag, container, false);     }      @Override     public void onStart() {         super.onStart();     } } 

Please help...I've been struggling with this for almost two hours..

EDIT: I'm pretty sure where I called this fragment (an activity that extends FragmentActivity) is working... just this fragment part is not working...

Answer 1

Your SomeFrag extends

android.app.Fragment 

as stated in the imports. Change the import to

android.support.v4.app.Fragment 

and the cast will succeed.

Answer 2

try changing following import

import android.app.Fragment 

to import android.support.v4.app.Fragment