Android Open Source - fragments Second Fragment

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License

The source code is released under:

GNU General Public License

Java Source Code

package edu.cs4730.fragcomdemo;
//w w  w .j a va2s  . co  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;
import android.widget.TextView;

/**
 * A simple {@link Fragment} subclass. Activities that contain this fragment
 * must implement the {@link SecondFragment.OnFragmentInteractionListener}
 * interface to handle interaction events. Use the
 * {@link SecondFragment#newInstance} factory method to create an instance of
 * this fragment.
 * 
 */
public class SecondFragment extends Fragment {
  // TODO: Rename parameter arguments, choose names that match
  // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
  private static final String ARG_PARAM1 = "param1";
  private static final String ARG_PARAM2 = "param2";

  // TODO: Rename and change types of parameters
  private String mParam1;
  private String mParam2;

  private OnFragmentInteractionListener2 mListener;

  
  TextView tv1, tv2;
  Button btn1;
  
  /**
   * Use this factory method to create a new instance of this fragment using
   * the provided parameters.
   * 
   * @param param1
   *            Parameter 1.
   * @param param2
   *            Parameter 2.
   * @return A new instance of fragment SecondFragment.
   */
  // TODO: Rename and change types and number of parameters
  public static SecondFragment newInstance(String param1, String param2) {
    SecondFragment fragment = new SecondFragment();
    Bundle args = new Bundle();
    args.putString(ARG_PARAM1, param1);
    args.putString(ARG_PARAM2, param2);
    fragment.setArguments(args);
    return fragment;
  }

  public SecondFragment() {
    // Required empty public constructor
  }

  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (getArguments() != null) {
      mParam1 = getArguments().getString(ARG_PARAM1);
      mParam2 = getArguments().getString(ARG_PARAM2);
    }
  }

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container,
      Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View myView = inflater.inflate(R.layout.fragment_second, container, false);
    tv1 = (TextView) myView.findViewById(R.id.sf_tv1);
    tv1.setText("Parameter1: "+mParam1);
    tv2 = (TextView) myView.findViewById(R.id.sf_tv2);
    tv2.setText("Parameter2: "+mParam2);
    btn1 = (Button) myView.findViewById(R.id.sf_btn1);
    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.onFragmentInteraction2("Called by SecondFramgnet");
        }
      }
    });
    
    return myView;
  }


  @Override
  public void onAttach(Activity activity) {
    super.onAttach(activity);
    try {
      mListener = (OnFragmentInteractionListener2) 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 OnFragmentInteractionListener2 {
    // TODO: Update argument type and name
    public void onFragmentInteraction2(String Data);
  }

}

Java Source Code List

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