Wait Till Get My Id And My Friends Id Facebook

I want to wait till i get my user name and my id, and also to wait until I get the user names and users id of my friends in facebook. how can I implement it? I wrote a code after t

Solution 1:

For dependent threads, you can use a countdown latch : http://developer.android.com/reference/java/util/concurrent/CountDownLatch.html

Here is an example:

http://www.javacodegeeks.com/2011/09/java-concurrency-tutorial.html

Solution 2:

Using Android Facebook 3.0 setup the Fragment to manage the states using this tutorial

https://developers.facebook.com/docs/tutorials/androidsdk/3.0/scrumptious/authenticate/

You can use the prebuilt facebook login button to also login using the xml

<com.facebook.widget.LoginButton
    android:id="@+id/authButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="51dp" />

Then either using the Session StatusCallback

https://developers.facebook.com/docs/reference/android/3.0/Session.StatusCallback or the overrides you created in the fragment in the previous tutorial you can initiate a call to retrieve your friends which would look like this

voidgetFriendsWithApp(final Intent intent){
       finalProgressDialogmDialog=newProgressDialog(this);
       mDialog.setMessage("Loading...");
       mDialog.setCancelable(false);
       mDialog.show();
       StringfqlQuery="SELECT uid, name, pic_square FROM user WHERE uid IN " +
              "(SELECT uid2 FROM friend WHERE uid1 = me())";
        Bundleparams=newBundle();
        params.putString("q", fqlQuery);
        Sessionsession= Session.getActiveSession();
        Requestrequest=newRequest(session,
            "/fql",                         
            params,                         
            HttpMethod.GET,                 
            newRequest.Callback(){         
                publicvoidonCompleted(Response response) {
                    try {
                        mDialog.dismiss();
                        TypelistType=newTypeToken<ArrayList<Friend>>(){}.getType();
                        Utils.friends = newGson().fromJson(response.getGraphObject().getInnerJSONObject().getJSONArray("data").toString(), listType);
                        startActivity(intent);
//This is where you would do what you want after you retrieve your json with friends
                    } catch (JSONException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                }                  
        }); 
      Request.executeBatchAsync(request);          
}