Calling a method in one fragment from another

Question

I\'ve been trying for a while already (as well, searching in here) for something to help me to refresh listView in my MainFragment, when a button is pressed in other fragmen

Answer 1

you should use interface for this. define an interface in OtherFragment class and implement that in your MainActivity and define a public method in your MainFragment for refreshing your ListView and call that method from your MainActivity. here is an example :

public Class OtherFragment extends Fragment implements OnClickListener {

private Communicator communicator;

   ...

public void setCommunicator(Communicator communicator) {
    this.communicator = communicator;
}

@Override
public void onClick(View v) {
   communicator.clicked();
}

   public interface Communicator {
      public void clicked();
   }
}

and in your MainActivity :

public class MainActivity extends Activity implements OtherFragment.Communicator {

   MainFragment mainFragment;

   @Override
   protected void onCreate(Bundle b) {
      ...
      OtherFragment otherFragment = new OtherFragment();
      otherFragment.setCommunicator(this);
      ...
   }

   ...

   @Override 
   public void clicked() {
     mainFragment.updateList();
   }
}

and in your MainFragment :

public class MainFragment extends Fragment {

    ...

    public void updateList() {
        // update list
    }
}