使用Facebook-Android SDK訪問朋友的麻煩

Question

我一直在努力與Android和Facebook的圖形API，我敢肯定，這是中級程序員的小菜一碟。我想要的是一個非常簡單的Android應用程序，它將用戶登錄到Facebook，獲得用戶同意訪問信息，最後無縫地查詢圖形API以獲取用戶朋友。我提到工作無縫，因爲我看到許多示例應用程序需要用戶按下「獲取朋友」按鈕，但我不想那樣做。我希望提取用戶朋友而不要求他推送任何東西。

我粘貼了下面的代碼。我可以登錄並授予我的應用程序許可。接下來，我期望它展示我的朋友，但它只是指引我到一個空白頁面。問題可能是我在錯誤的地方訪問了圖形API，因爲Logcat不包含我在請求前後打印的消息。你可以幫我嗎。

公共類FacebookLogin延伸活動{

Facebook mFacebook = new Facebook("XXXXXXXXXXXX"); 
AsyncFacebookRunner mAsyncRunner = new AsyncFacebookRunner(mFacebook); 
View linearLayout; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    linearLayout = findViewById(R.id.main_layout); 

    mFacebook.authorize(this, new DialogListener() { 
     @Override 
     public void onComplete(Bundle values) 
     { 
      Log.d("Facebook-Example-Friends Request", "Started API request"); 
      mAsyncRunner.request("me/friends", new FriendsRequestListener()); 
      Log.d("Facebook-Example-Friends Request", "Finished API request"); 
     } 

     @Override 
     public void onFacebookError(FacebookError error) {} 

     @Override 
     public void onError(DialogError e) {} 

     @Override 
     public void onCancel() {} 
    }); 
} 

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 

    mFacebook.authorizeCallback(requestCode, resultCode, data); 
} 

public class FriendsRequestListener implements RequestListener 
{ 
    /** 
    * Called when the request to get friends has been completed. 
    * Retrieve, parse and display the JSON stream. 
    */ 
    public void onComplete(final String response) 
    { 
     Log.d("Facebook-Example-Friends Request", "FriendsListenerOnComplete"); 

     try 
     { 
      JSONObject json = Util.parseJson(response); 
      final JSONArray friends = json.getJSONArray("data"); 

      FacebookLogin.this.runOnUiThread(new Runnable() 
      { 
       public void run() 
       { 
        int l = (friends != null ? friends.length() : 0); 

        for (int i=0; i<l; i++) 
        { 
         try 
         { 
          JSONObject o = friends.getJSONObject(i); 

          TextView tv = new TextView(FacebookLogin.this); 
          tv.setText(o.getString("name")); 
          ((LinearLayout) linearLayout).addView(tv); 
         } 
         catch(JSONException e) 
         { 
          Toast.makeText(getApplicationContext(), "JSON parsing error", Toast.LENGTH_LONG); 
         } 
        } 
       } 
      }); 
     } 
     catch(JSONException e) 
     { 
      Log.d("Facebook-Example-Friends Request", "JSON Error in response"); 
     } 
     catch(FacebookError e) 
     { 
      Log.d("Facebook-Example-Friends Request", "Facebook Error in response"); 
     } 
    } 
} 

}

Answer 1

我想你看到這個答案你有一些想法.. Facebook/Twitter Integration in my android application

和

http://android-sample-solution.blogspot.com