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Android SDKを用いてFacebookの友達をListViewに表示するコード

Android

何か調べていてあんまりこの手のエントリーが無いのはなんででしょう？気のせいかな？

内容的には単純にAndroidアプリ上でSDKを用いてFacebookのauthorizeを呼び、友達リストとその画像をListViewに表示するソースです。

■参考サイト
・Facebookのオフィシャルサイト
・IBMさんのこのサイト

ぶっちゃけ画像を取ってくるところとか自信ありません。。。
急にコレだけ単なるhttp(s)アクセスになっていて、SDK関係ないし。
これみんなどうしてるんだろう？？？

ちょっと本当の友達が表示されてしまうので、完成キャプチャーは貼れませんが。
一応画像とnameは取れています。

                                                    • -

クラス名を「FriendActivity」としました。
AndroidManifest.xmlに追加

res/layout/friend.xml

実際のFriendActivity.javaはこんな感じです



import java.io.FileNotFoundException;

import java.io.IOException;

import java.net.MalformedURLException;
import java.util.List;

import java.util.ArrayList;
import android.app.Activity;

import android.os.Bundle;

import android.util.Log;
import android.content.Intent;

import android.content.Context;
import android.view.View;

import android.view.ViewGroup;

import android.view.Window;

import android.view.LayoutInflater;
import android.widget.BaseAdapter;

import android.widget.ListView;

import android.widget.TextView;

import android.widget.ImageView;
import org.json.JSONException;

import org.json.JSONObject;

import org.json.JSONArray;
import com.facebook.android.Facebook;

import com.facebook.android.Facebook.DialogListener;

import com.facebook.android.FacebookError;

import com.facebook.android.AsyncFacebookRunner;

import com.facebook.android.DialogError;



public class FriendActivity extends Activity

{

  private FriendListAdapter m_list_view;

  private List m_item_list;
  private Facebook m_facebook;

  private AsyncFacebookRunner m_facebook_runner;
  private static class Friend

  {

    String id;

    String name;

    String img_url;
    Friend (String _id, String _name)

    {

      this.id = _id;

      this.name = _name;

      this.img_url = "https://graph.facebook.com/" + id + "/picture";

    }

  }

  private static class ViewHolder

  {

    ImageView image;

    TextView name;

  }
  @Override

    protected void onCreate(Bundle bundle)

    {

      super.onCreate (bundle);
      requestWindowFeature (Window.FEATURE_INDETERMINATE_PROGRESS);
      setContentView (R.layout.friend);

      setProgressBarIndeterminateVisibility (true);

      setProgressBarIndeterminate (true);
      m_item_list = new ArrayList ();

      connect_facebook ();
      setProgressBarIndeterminate (false);

      setProgressBarIndeterminateVisibility (false);

    }
  @Override

    public void onActivityResult (int requestCode, int resultCode, Intent data)

    {

      super.onActivityResult(requestCode, resultCode, data);

      m_facebook.authorizeCallback (requestCode, resultCode, data);

    }
  private void connect_facebook ()

  {

    m_facebook = new Facebook ("Facebookから取得したID");

    m_facebook.authorize (this, new LoginListener ());

  }
  public class LoginListener implements DialogListener

  {

    @Override

      public void onComplete (Bundle values)

      {

        m_facebook_runner = new AsyncFacebookRunner (m_facebook);

        m_facebook_runner.request ("me/friends", new FriendsRequestListener ());

      }
    @Override

      public void onFacebookError (FacebookError e)

      {

        Log.e ("Facebook", "authorize : Facebook Error:" + e.getMessage ());

      }
    @Override

      public void onError (DialogError e)

      {

        Log.e ("Facebook", "authorize : Error:" + e.getMessage ());

      }
    @Override

      public void onCancel () {}

  }
  public class FriendsRequestListener implements com.facebook.android.AsyncFacebookRunner.RequestListener

  {

    @Override

      public void onComplete(String response, final Object state)

      {

        try

        {

          Log.d ("Facebook", "Friends-Request : response.length(): " + response.length ());

          Log.d ("Facebook", "Friends-Request : Response: " + response);
          final JSONObject json = new JSONObject (response);

          JSONArray d = json.getJSONArray ("data");

          int l = (d != null ? d.length () : 0);

          Log.d ("Facebook-Friends-Request", "d.length (): " + l);
          //for (int i = 0; i < l; i++)

          for (int i = 0; i < 10; i++)

          {

            JSONObject o = d.getJSONObject (i);
            String id = o.getString ("id");

            String name = o.getString ("name");
            m_item_list.add (new Friend (id, name));

          }
          FriendActivity.this.runOnUiThread (new Runnable () {

            public void run ()

            {

              ListView lv = new ListView (FriendActivity.this);

              setContentView (lv);

              m_list_view = new FriendListAdapter (FriendActivity.this);

              lv.setAdapter (m_list_view);

              m_list_view.notifyDataSetChanged ();

            }

          });

        }

        catch (JSONException e)

        {

          Log.d ("Facebook", "Friends-Request : JSON Error in response");

        }

      }
    @Override

      public void onFacebookError (FacebookError e, final Object state)

      {

        Log.e ("Facebook", "Friends-Request : Facebook Error:" + e.getMessage ());

      }
    @Override

      public void onFileNotFoundException (FileNotFoundException e, final Object state)

      {

        Log.e ("Facebook", "Friends-Request : Resource not found:" + e.getMessage ());

      }
    @Override

      public void onIOException (IOException e, final Object state)

      {

        Log.e ("Facebook", "Friends-Request : Network Error:" + e.getMessage ());

      }
    @Override

      public void onMalformedURLException (MalformedURLException e, final Object state)

      {

        Log.e ("Facebook", "Friends-Request : Invalid URL:" + e.getMessage ());

      }

  }
  private class FriendListAdapter extends BaseAdapter

  {

    private LayoutInflater m_layoutInflater;
    public FriendListAdapter (Context context)

    {

      m_layoutInflater = (LayoutInflater)context.getSystemService (Context.LAYOUT_INFLATER_SERVICE);

    }
    @Override

      public int getCount () { return m_item_list.size (); }

    @Override

      public Object getItem (int position) { return m_item_list.get (position); }

    @Override

      public long getItemId (int position) { return position; }

    @Override

      public View getView (int position, View convertView, ViewGroup parent)

      {

        ViewHolder holder;
        if (convertView == null)

        {

          convertView = m_layoutInflater.inflate (R.layout.friend, null);

          holder = new ViewHolder ();
          holder.image = (ImageView) convertView.findViewById (R.id.image);

          holder.name = (TextView) convertView.findViewById (R.id.name);
          convertView.setTag (holder);

        }

        else

        {

          holder = (ViewHolder)convertView.getTag ();

        }
        Friend data = (Friend)getItem (position);
        GetImageAsyncTask task = new GetImageAsyncTask (getApplicationContext (), holder.image);

        task.execute (data.img_url);
        holder.name.setText (data.name);

        return convertView;

      }

  }

}

外部クラスはGetImageAsyncTaskぐらいですが、一般的なAsyncのクラスです。

GetImageAsyncTask.java



import java.io.IOException;

import java.io.InputStream;

import java.net.URL;

import java.net.MalformedURLException;
import android.util.Log;
import android.os.AsyncTask;

import android.content.Context;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.widget.ImageView;



public class GetImageAsyncTask extends AsyncTask

{

	  private Context m_context;

	  private ImageView m_image_view;
	  public GetImageAsyncTask (Context context, ImageView image)

	  {

	    this.m_context = context;

	    this.m_image_view = image;

	  }
	  @Override

	    protected void onPreExecute ()

	    {

	      /*

	      // バックグラウンドの処理前にUIスレッドでダイアログ表示

	      m_progress = new ProgressDialog (this.m_context);
	      //m_progress.setMessage (getResources().getText(R.string.data_loading));

	      m_progress.setIndeterminate (true);

	      m_progress.show ();

	        */

	    }
	  @Override

	    protected Bitmap doInBackground (String... params)

	    {

	      synchronized (m_context)

	      {

	        try

	        {

	          //キャッシュより画像データを取得

	          Bitmap image = ImageCache.get (params[0]);

	          if (image == null)

	          {

	            //キャッシュにデータが存在しない場合はwebより画像データを取得

	            URL image_url = new URL (params[0]);

	            InputStream is;

	            is = image_url.openStream ();

	            image = BitmapFactory.decodeStream (is);
	            //取得した画像データをキャッシュに保持

	            ImageCache.set (params[0], image);

	          }
	          return image;

	        }

	        catch (MalformedURLException e)

	        {

	          Log.d ("GetImageAsyncTask", "Failed AsyncImageGetTask MalformedURLException = " + e.getMessage ());

	          return null;

	        }

	        catch (IOException e)

	        {

	          Log.d ("GetImageAsyncTask", "Failed AsyncImageGetTask IOException = " + e.getMessage ());

	          return null;

	        }

	      }

	    }
	  @Override

	    protected void onPostExecute (Bitmap result)

	    {

	      // 処理中ダイアログをクローズ

	      //m_progress.dismiss();
	      m_image_view.setImageBitmap (result);

	    }

}

ImageCache.java



import android.graphics.Bitmap;

import java.util.HashMap;
public class ImageCache

{

  private static HashMap cache = new HashMap ();
  public static Bitmap get (String key)

  {

    if (cache.containsKey (key))

      return cache.get (key);
    return null;

  }
  public static void set (String key, Bitmap image)

  {

    cache.put (key, image);

  }
  public static void clear ()

  {

    cache = null;

    cache = new HashMap ();

  }

}