How to get comments of Facebook Notes Items using

问题:

I want to show Facebook Page's Notes items with those comments and likes using Graph API.

To do that, I'm using the asyncFacebookRunner in Facebook SDK.

Steps are like this:

1. call asyncFacebookRunner.request to get Note Item with PageId

   mAsyncRunner.request(sAPIString, new NotesRequestListener(), null);

2. Response has come. ( I can't highlight function call. Sorry for inconvenient to find it.)

   public class NotesRequestListener implements com.facebook.android.AsyncFacebookRunner.RequestListener 
   {
       /**
        * Called when the request to get notes items has been completed.
        * Retrieve and parse and display the JSON stream.
        */
       @Override
       public void onComplete(String response, Object state) {
           // TODO Auto-generated method stub
           Log.i("My_TAG", "onComplete with response, state");
           try 
           {
               // process the response here: executed in background thread
   
               final JSONObject json = new JSONObject(response);
               JSONArray arrNotesItems = json.getJSONArray("data");
               int l = (arrNotesItems != null ? arrNotesItems.length() : 0);
   
              // !!!!                     
              // This has another request call
              // !!!!
              final ArrayList<WordsItem> newItems = WordsItem.getWordsItems(arrNotesItems,getActivity());
   
               WordsActivity.this.runOnUiThread(new Runnable() {
                   public void run() {
                       wordsItems.clear();
                       wordsItems.addAll(newItems);
                       aa.notifyDataSetChanged();
                   }
               }); // runOnUiThread                          
           } // try
           catch (JSONException e)
           {
               Log.i("My_TAG", "JSON Error in response");
           } // catch
   
   } // onComplete
            ...  other override methods ...
   
   } // Request Listener
   
   
   < Another Class >
   
   public static ArrayList<WordsItem> getWordsItems(JSONArray arrJSON, Activity activity) {
         ArrayList<WordsItem> wordsItems = new ArrayList<WordsItem>();
         int l = (arrJSON != null ? arrJSON.length() : 0);
         try {
              WordsItem newItem;           
              for (int i=0; i<l; i++) {
                  JSONObject jsonObj = arrJSON.getJSONObject(i);
                  String sTitle = jsonObj.getString("subject");
   
                  String sNoteID = jsonObj.getString("id");
                  ... get another fields here ...
                  newItem = new WordItem(...); 
   
                  // !!!!                     
                  // This has request call for comments
                  // !!!!
                  ArrayList<CommentItem> arrComment = getUserComments(sNoteID);
                  wordsItems.add(newItem);
              }                
         } catch (Exception e) {
              e.printStackTrace();
         }
         return wordsItems;
      } // getWordsItems
   

3. call another asyncFacebookRunner.request to get comments of item(with NoteID)

   in getUserComments

   mAsyncRunner.request(sAPIString, new CommentRequestListener(), null);

Before getting comments(OnComplete in CommentRequestListener has not called), getWordsItems returns item array.

So I can't see the comments.

How can I wait to update UI till getting comments? (It's so ironic to synchronize asynchronized calls.)

Thanks in advance.

回答1:

Use facebook object which has non-asynchronous request method. You need not implement listener method.

So, I suggest below means.

1. use mAsyncRunner.request for first request call.
2. use mFacebookRunner.request for second request call.

I hope it may help you:-)

回答2:

Using FQL - Facebook Query Language you can easily get all this information about any particular note info , Also to get likes on that and comments over it as like examples given in the links.