Android Open Source - fragments Main Fragment

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License

The source code is released under:

GNU General Public License

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Java Source Code

package edu.cs4730.fragcomdemo;
/*from   w ww.j  av a2 s  .  c  o m*/
import android.app.Activity;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;

/**
 * A simple {@link Fragment} subclass.
 * 
 */
public class MainFragment extends Fragment {

  private OnFragmentInteractionListener mListener;

  Button btn1, btn2;
  
  public MainFragment() {
    // Required empty public constructor
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View myView = inflater.inflate(R.layout.fragment_main, container, false);
    
    //button to call firstfragment
    btn1 = (Button) myView.findViewById(R.id.button1);
    btn1.setOnClickListener( new View.OnClickListener(){
      @Override
      public void onClick(View v) {
        if (mListener != null) {
          //this is calling the interface, which call into the activity, so it 
          //can change to the first fragment and send a simple string as well.
          mListener.onFragmentInteraction(1);
        }
      }
    });
    //button to call secondfragment.
    btn2 = (Button) myView.findViewById(R.id.button2);
    btn2.setOnClickListener( new View.OnClickListener(){
      @Override
      public void onClick(View v) {
        if (mListener != null) {
          //this is calling the interface, which call into the activity, so it 
          //can change to the second fragment and send a simple string as well.
          mListener.onFragmentInteraction(2);
        }
      }
    });
    return myView;
  }

  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    try {
      mListener = (OnFragmentInteractionListener) activity;
    } catch (ClassCastException e) {
      throw new ClassCastException(activity.toString()
          + " must implement OnFragmentInteractionListener");
    }
  }

  @Override
  public void onDetach() {
    super.onDetach();
    mListener = null;
  }

  /**
   * This interface must be implemented by activities that contain this
   * fragment to allow an interaction in this fragment to be communicated to
   * the activity and potentially other fragments contained in that activity.
   * <p>
   * See the Android Training lesson <a href=
   * "http://developer.android.com/training/basics/fragments/communicating.html"
   * >Communicating with Other Fragments</a> for more information.
   */
  public interface OnFragmentInteractionListener {
    // TODO: Update argument type and name
    public void onFragmentInteraction(int which);
  }
}

Java Source Code List