Android Open Source - android-3.0-howtos Main Fragment

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License

The source code is released under:

Copyright 2012-present Facebook, Inc. You are hereby granted a non-exclusive, worldwide, royalty-free license to use, copy, modify, and distribute this software in source code or binary form for use ...

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Java Source Code

package com.facebook.samples.applinkinghowto;
//w w w  .jav  a2s .  c  o  m
import java.util.ArrayList;

import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.ListView;

import com.facebook.Session;
import com.facebook.SessionState;
import com.facebook.UiLifecycleHelper;
import com.facebook.widget.LoginButton;

public class MainFragment extends Fragment {

  private static final String TAG = "MainFragment";
  
  private UiLifecycleHelper uiHelper;
    private Session.StatusCallback callback = new Session.StatusCallback() {
        @Override
        public void call(final Session session, final SessionState state, final Exception exception) {
            onSessionStateChange(session, state, exception);
        }
    };
  private ListView recipeListView;
  private int recipIndex = -1;
  
  @Override
  public View onCreateView(LayoutInflater inflater, 
      ViewGroup container, 
      Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.main, container, false);
    
    LoginButton authButton = (LoginButton) view.findViewById(R.id.authButton);
    authButton.setFragment(this);
    
    recipeListView = (ListView) view.findViewById(R.id.recipeList);
    ArrayList<Recipe> recipes = ((AppLinkingHowToApplication)getActivity()
        .getApplication())
        .getRecipes();
    recipeListView.setAdapter(new ArrayAdapter<Recipe>(getActivity(),
        android.R.layout.simple_list_item_1,
        recipes));
    recipeListView.setOnItemClickListener(new OnItemClickListener () {
      @Override
      public void onItemClick(AdapterView<?> l, View v,
                  int position, long id) {
        // Launch the recipe details activity, passing on
        // the info on the item that was clicked.
        Intent intent = new Intent();
            intent.setClass(getActivity(), DetailActivity.class);
            intent.putExtra("index", position);
            startActivity(intent);
      }
    });
    
    return view;
  }
    
  @Override
  public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    
    // Check for an incoming deep link
        Uri targetUri = getActivity().getIntent().getData();
        if (targetUri != null) {
          Log.i(TAG, "Incoming deep link: " + targetUri);
          recipIndex = ((AppLinkingHowToApplication)getActivity()
              .getApplication())
              .getRecipeIndexLink(targetUri.toString());
          Log.i(TAG, "Matched URL: " + recipIndex);
        }
  }
  
  @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        uiHelper = new UiLifecycleHelper(getActivity(), callback);
        uiHelper.onCreate(savedInstanceState);
    }

    @Override
    public void onResume() {
        super.onResume();
        
        // For scenarios where the main activity is launched and user
    // session is not null, the session state change notification
    // may not be triggered. Trigger it if it's open/closed.
    Session session = Session.getActiveSession();
    if (session != null &&
        (session.isOpened() || session.isClosed()) ) {
      onSessionStateChange(session, session.getState(), null);
    }
    
        uiHelper.onResume();
    }
    
    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        uiHelper.onActivityResult(requestCode, resultCode, data);
    }
    
    @Override
    public void onPause() {
        super.onPause();
        uiHelper.onPause();
    }
    
    @Override
    public void onDestroy() {
        super.onDestroy();
        uiHelper.onDestroy();
    }
    
    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        uiHelper.onSaveInstanceState(outState);
    }
    
    private void onSessionStateChange(Session session, SessionState state, Exception exception) {
      // Check if the user is authenticated and
        // a deep link needs to be handled.
        if (state.isOpened() && recipIndex >= 0) {
          // Launch the menu details activity, passing on
            // the info on the item that was selected.
          Intent intent = new Intent();
            intent.setClass(getActivity(), DetailActivity.class);
            intent.putExtra("index", recipIndex);
            startActivity(intent);
            // Reset deep link trigger
            recipIndex = -1;
        } else if (state.isOpened()) {
        // Make the recipe list visible
        recipeListView.setVisibility(View.VISIBLE);        
        } else if (state.isClosed()) {
          // Make the recipe list hidden
          recipeListView.setVisibility(View.INVISIBLE);
        }
    }
}

Java Source Code List