Android的Facebook专辑使用Facebook的Android显示Android Android的SDK

Question

我正在建立一个Android应用程序，其中我使用Facebook的Android SDK登录到Facebook。登录部分顺利，但现在我挂了如何在登录到Facebook后在gridview中显示相册。当所有相册都会在网格视图中显示时，那么当我点击任何一个相册时，它必须用每个图像左上角的复选框打开。所以，当我检查特定图像的复选框时，它必须保存在设备的SD卡和其他功能检查的图像必须拼贴在表格布局具有tablerow &背景颜色为每个表格行。我将附上一些文件，以便您可以了解我想要的内容。希望你的答复也一样。所以请发送完整的源代码。我从过去的20天尝试，但我没有成功:-(很快盼望回复

enter code here公共类相册延伸活动{ 私有静态最后弦乐APP_ID =“1403104849907306”; 私人使用Facebook =新的Facebook （APP_ID）;

// HOLD THE URL TO MAKE THE API CALL TO 
private String URL; 

// STORE THE PAGING URL 
private String pagingURL; 

// FLAG FOR CURRENT PAGE 
int current_page = 1; 

// BOOLEAN TO CHECK IF NEW FEEDS ARE LOADING 
Boolean loadingMore = true; 

Boolean stopLoadingData = false; 

ArrayList<getAlbums> arrAlbums = null; 


public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.display); 

class getAlbumsData extends AsyncTask<Void, Void, Void> { 

     LinearLayout linlaHeaderProgress = (LinearLayout) findViewById(R.id.linlaHeaderProgress); 

     @Override 
     protected void onPreExecute() { 

      // SHOW THE PROGRESS BAR (SPINNER) WHILE LOADING ALBUMS 
      linlaHeaderProgress.setVisibility(View.VISIBLE); 
     } 

     @Override 
     protected Void doInBackground(Void... arg0) { 

      // CHANGE THE LOADING MORE STATUS TO PREVENT DUPLICATE CALLS FOR 
      // MORE DATA WHILE LOADING A BATCH 
      loadingMore = true; 

      // SET THE INITIAL URL TO GET THE FIRST LOT OF ALBUMS 
      URL = "https://graph.facebook.com/" + "100005623513169" 
        + "/photos&access_token=" 
        + facebook.getAccessToken() + "?limit=10"; 


      try { 

       HttpClient hc = new DefaultHttpClient(); 
       HttpGet get = new HttpGet(URL); 
       HttpResponse rp = hc.execute(get); 

       if (rp.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { 
        String queryAlbums = EntityUtils.toString(rp.getEntity()); 

        JSONObject JOTemp = new JSONObject(queryAlbums); 

        JSONArray JAAlbums = JOTemp.getJSONArray("data"); 

        // IN MY CODE, I GET THE NEXT PAGE LINK HERE 

        if (JAAlbums.length() == 0) { 
         stopLoadingData = true; 
         Runnable run = new Runnable() { 

          @Override 
          public void run() { 
           Toast.makeText(getApplicationContext(), 
             "No more Albums", Toast.LENGTH_SHORT) 
             .show(); 
          } 
         }; 
         Albums.this.runOnUiThread(run); 

        } else { 
         // PAGING JSONOBJECT 
         if (JOTemp.has("paging")) { 
          JSONObject JOPaging = JOTemp.getJSONObject("paging"); 

          if (JOPaging.has("next")) { 
           String initialpagingURL = JOPaging 
             .getString("next"); 

           String[] parts = initialpagingURL.split("limit=10"); 
           String getLimit = parts[1]; 

           pagingURL = "https://graph.facebook.com/" 
             + "100005623513169" + "/albums&access_token=" 
             + facebook.getAccessToken() 
             + "?limit=10" + getLimit; 

          } else { 
           stopLoadingData = true; 
           Runnable run = new Runnable() { 

            @Override 
            public void run() { 
             Toast.makeText(getApplicationContext(), 
               "No more Albums", 
               Toast.LENGTH_SHORT).show(); 
            } 
           }; 
           Albums.this.runOnUiThread(run); 
          } 
         } else { 
          stopLoadingData = true; 
          Runnable run = new Runnable() { 

           @Override 
           public void run() { 
            Toast.makeText(getApplicationContext(), 
              "No more Albums", 
              Toast.LENGTH_SHORT).show(); 
           } 
          }; 
          Albums.this.runOnUiThread(run); 

         } 

         getAlbums albums; 

         for (int i = 0; i < JAAlbums.length(); i++) { 
          JSONObject JOAlbums = JAAlbums.getJSONObject(i); 

          if (JOAlbums.has("link")) { 

           albums = new getAlbums(); 

           // GET THE ALBUM ID 
           if (JOAlbums.has("id")) { 
            albums.setAlbumID(JOAlbums.getString("id")); 
           } else { 
            albums.setAlbumID(null); 
           } 

           // GET THE ALBUM NAME 
           if (JOAlbums.has("name")) { 
            albums.setAlbumName(JOAlbums 
              .getString("name")); 
           } else { 
            albums.setAlbumName(null); 
           } 

           // GET THE ALBUM COVER PHOTO 
           if (JOAlbums.has("cover_photo")) { 
            albums.setAlbumCover("https://graph.facebook.com/" 
              + JOAlbums.getString("cover_photo") 
              + "/picture?type=normal" 
              + "&access_token=" 
              + facebook.getAccessToken()); 
           } else { 
            albums.setAlbumCover("https://graph.facebook.com/" 
              + JOAlbums.getString("id") 
              + "/picture?type=album" 
              + "&access_token=" 
              + facebook.getAccessToken()); 
           } 

           // GET THE ALBUM'S PHOTO COUNT 
           if (JOAlbums.has("count")) { 
            albums.setAlbumPhotoCount(JOAlbums 
              .getString("count")); 
           } else { 
            albums.setAlbumPhotoCount("0"); 
           } 

           arrAlbums.add(albums); 
          } 
         } 
        } 
       } 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 

      return null; 
     } 

     @Override 
     protected void onPostExecute(Void result) { 

      ListView lv = null; 
      ListAdapter adapter = null; 
      // SET THE ADAPTER TO THE LISTVIEW 
      lv.setAdapter(adapter); 

      // CHANGE THE LOADING MORE STATUS 
      loadingMore = false; 

      // HIDE THE PROGRESS BAR (SPINNER) AFTER LOADING ALBUMS 
      linlaHeaderProgress.setVisibility(View.GONE); 
     } 

    } 

    class loadMoreAlbums extends AsyncTask<Void, Void, Void> { 

     LinearLayout linlaProgressBar = (LinearLayout)findViewById(R.id.linlaProgressBar); 

     @Override 
     protected void onPreExecute() { 
      // SHOW THE BOTTOM PROGRESS BAR (SPINNER) WHILE LOADING MORE ALBUMS 
      linlaProgressBar.setVisibility(View.VISIBLE); 
     } 

     @Override 
     protected Void doInBackground(Void... params) { 

      // SET LOADING MORE "TRUE" 
      loadingMore = true; 

      // INCREMENT CURRENT PAGE 
      current_page += 1; 

      // Next page request 
      URL = pagingURL; 
      // Log.e("NEW URL", URL); 

      try { 

       HttpClient hc = new DefaultHttpClient(); 
       HttpGet get = new HttpGet(URL); 
       HttpResponse rp = hc.execute(get); 

       if (rp.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { 
        String queryAlbums = EntityUtils.toString(rp.getEntity()); 
        // Log.e("RESULT", queryAlbums); 

        JSONObject JOTemp = new JSONObject(queryAlbums); 

        JSONArray JAAlbums = JOTemp.getJSONArray("data"); 

        if (JAAlbums.length() == 0) { 
         stopLoadingData = true; 

         Runnable run = new Runnable() { 

          @Override 
          public void run() { 
           Toast.makeText(getApplicationContext(), 
             "No more Albums", Toast.LENGTH_SHORT) 
             .show(); 
          } 
         }; 
         Albums.this.runOnUiThread(run); 

        } else { 
         // PAGING JSONOBJECT 
         JSONObject JOPaging = JOTemp.getJSONObject("paging"); 
         // Log.e("PAGING", JOPaging.toString()); 

         if (JOPaging.has("next")) { 
          String initialpagingURL = JOPaging 
            .getString("next"); 
          // Log.e("initialpagingURL", initialpagingURL); 

          String[] parts = initialpagingURL.split("limit=10"); 
          String getLimit = parts[1]; 

          pagingURL = "https://graph.facebook.com/" 
            + "100005623513169" + "/albums&access_token=" 
            + facebook.getAccessToken() 
            + "?limit=10" + getLimit; 
          // Log.e("NEW PAGING URL", pagingURL); 

         } else { 
          stopLoadingData = true; 
          Runnable run = new Runnable() { 

           @Override 
           public void run() { 
            Toast.makeText(getApplicationContext(), 
              "No more Albums available", 
              Toast.LENGTH_SHORT).show(); 
           } 
          }; 
          Albums.this.runOnUiThread(run); 
         } 

         getAlbums albums; 

         for (int i = 0; i < JAAlbums.length(); i++) { 
          JSONObject JOAlbums = JAAlbums.getJSONObject(i); 
          // Log.e("INDIVIDUAL ALBUMS", JOAlbums.toString()); 

          if (JOAlbums.has("link")) { 

           albums = new getAlbums(); 

           // GET THE ALBUM ID 
           if (JOAlbums.has("id")) { 
            albums.setAlbumID(JOAlbums.getString("id")); 
           } else { 
            albums.setAlbumID(null); 
           } 

           // GET THE ALBUM NAME 
           if (JOAlbums.has("name")) { 
            albums.setAlbumName(JOAlbums 
              .getString("name")); 
           } else { 
            albums.setAlbumName(null); 
           } 

           // GET THE ALBUM COVER PHOTO 
           if (JOAlbums.has("cover_photo")) { 
            albums.setAlbumCover("https://graph.facebook.com/" 
              + JOAlbums.getString("cover_photo") 
              + "/picture?type=album" 
              + "&access_token=" 
              + facebook 
                .getAccessToken()); 
           } else { 
            albums.setAlbumCover("https://graph.facebook.com/" 
              + JOAlbums.getString("id") 
              + "/picture?type=album" 
              + "&access_token=" 
              + facebook 
                .getAccessToken()); 
           } 

           // GET THE ALBUM'S PHOTO COUNT 
           if (JOAlbums.has("count")) { 
            albums.setAlbumPhotoCount(JOAlbums 
              .getString("count")); 
           } else { 
            albums.setAlbumPhotoCount("0"); 
           } 

           arrAlbums.add(albums); 
          } 
         } 
        } 
       } 
      } catch (Exception e) { 
       e.printStackTrace(); 
      } 

      return null; 
     } 

     @Override 
     protected void onPostExecute(Void result) { 

      AdapterView<ListAdapter> lv = null; 
      // get listview current position - used to maintain scroll position 
      int currentPosition = lv.getFirstVisiblePosition(); 

      // APPEND NEW DATA TO THE ARRAYLIST AND SET THE ADAPTER TO THE 
      // LISTVIEW 
      AlbumsAdapter adapter = new AlbumsAdapter(Albums.this, arrAlbums); 
      lv.setAdapter(adapter); 

     // Setting new scroll position 
     ((ListView) lv).setSelectionFromTop(currentPosition + 1, 0); 

      // SET LOADINGMORE "FALSE" AFTER ADDING NEW FEEDS TO THE EXISTING 
      // LIST 
     loadingMore = false; 

      // HIDE THE BOTTOM PROGRESS BAR (SPINNER) AFTER LOADING MORE ALBUMS 
     linlaProgressBar.setVisibility(View.GONE); 
     } 

    } 
} 

}

Answer 1

你应该使用Facebook SDK 3.0+的Android，并利用他们的Request.executeAsync（）方法将用户登录到应用程序和检索会话后对象，您可以在Graph API上发出请求。这里是我的请求用户的相册的方法：

/** 
* Makes a request for user's photo albums from Facebook Graph API 
* @param session 
*/ 
private void fetchAlbumsFromFB(Session session) { 

    // callback after Graph API response with user object 
    Request.GraphUserCallback graphUserCallback; 
    graphUserCallback = new Request.GraphUserCallback() { 
     @Override 
     public void onCompleted(GraphUser user, Response response) { 
      JSONObject jsonObject = null; 
      if (user != null) 
       jsonObject = user.getInnerJSONObject(); 

      ImageAdapter.getInstance().setPhotoAlbums(jsonObject); 
     } 
    }; 

    // assign callback to final instance variable in inner class 
    final Request.GraphUserCallback finalCallback = graphUserCallback; 
    Request.Callback wrapperCallback = new Request.Callback() { 
     @Override 
     public void onCompleted(Response response) { 
      finalCallback.onCompleted(response.getGraphObjectAs(GraphUser.class), response); 
     } 
    }; 

    // make a new async request 
    Bundle params = new Bundle(); 
    params.putString("fields", "photos"); 
    Request request = new Request(session, "me/albums", params, null, wrapperCallback); 
    request.executeAsync(); 
} 

然后你可以分析这样的JSON响应：

/** 
* Updates the array with cover photos from albums 
* 
* @param photosObject 
*/ 
public void setPhotoAlbums(JSONObject photosObject) { 
    try { 
     mPhotoAlbumsArray = photosObject.getJSONArray("data"); 
     coverPhotosArr = new String[mPhotoAlbumsArray.length()]; 
     for (int i = 0; i < mPhotoAlbumsArray.length(); i++) { 
      JSONObject obj1 = mPhotoAlbumsArray.getJSONObject(i); 
      JSONObject obj2 = (JSONObject) obj1.get("photos"); 
      JSONArray obj3 = obj2.getJSONArray("data"); 
      JSONObject obj4 = obj3.getJSONObject(0); 
      String picture = String.valueOf(obj4.get("picture")); 
      coverPhotosArr[i] = picture; 
     } 

     // notify GridView's adapter that underlying data has been changed 
     notifyDataSetChanged(); 
    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
}