Android - getting fragment to work in Gingerbread using android.support.v4.app

Question

Trying to get a Fragment to load in Gingerbread using android.support.v4.app but I keep getting the following error:

The method replace(int, Fragment) in the type FragmentTransaction is not applicable for the arguments (int, Welcome)

My Welcome class extends Fragment, not sure what I am doing wrong here?

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        loadfrag();
    }

    private void loadfrag() {
        Welcome frag = new Welcome();
        android.app.FragmentTransaction transaction = getFragmentManager().beginTransaction();
        transaction.replace(R.id.flactivity_main, frag); **<--- line with error**
        transaction.commit();
    }
}


import android.support.v4.app.Fragment;

public class Welcome extends Fragment{
    private final String TAG = this.getClass().getSimpleName();
    private ViewGroup mrootview;
    private Activity mactivity;
    private Context mcontext;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState){
        //mrootview = (ViewGroup) 
        return inflater.inflate(R.layout.welcome, container, false);

    }
}

Answer 1

Instead of getFragmentManager() method use getSupportFragmentManager().