synchronization issue

ParseQuery<ParseObject> query = ParseQuery.getQuery("Activity"); query.whereEqualTo("type", "follow"); query.whereEqualTo("fromUser", ParseUser.getCurrentUser()); query.include("toUser"); query.setCachePolicy(ParseQuery.CachePolicy.NETWORK_ELSE_CACHE);

    //images of whom i am following
    ParseQuery<ParseObject> queryFollowed =ParseQuery.getQuery("Feed");
    queryFollowed.whereMatchesKeyInQuery("user", "toUser", query);
    //query.whereEqualTo("mediaType", "image");
    //query.include("user");
    // queryFollowed.whereExists("image");

    // my images 
    ParseQuery<ParseObject> userParseObjects = ParseQuery.getQuery("Feed");
    userParseObjects.whereEqualTo("user", ParseUser.getCurrentUser());
    //query.whereEqualTo("mediaType", "image");
    //query.include("user");
    //userParseObjects.whereExists("image");

    // combine both queries
    List<ParseQuery<ParseObject>> queries = new ArrayList<ParseQuery<ParseObject>>();
    queries.add(userParseObjects);
    queries.add(queryFollowed);


    ParseQuery<ParseObject> mainQuery = ParseQuery.or(queries);
    mainQuery.include("user");
    mainQuery.setLimit(downloadCount);
    mainQuery.setSkip(skip);
    //mainQuery.whereEqualTo("mediaType", "image");
    mainQuery.orderByDescending("updatedAt");

    Utilities.printLog("image above fing query");

    Utilities.printLog("current user"+ParseUser.getCurrentUser());

    mainQuery.findInBackground(new FindCallback<ParseObject>(){
        @Override
        public void done(List<ParseObject> object, ParseException e) {
            // TODO Auto-generated method stub
            if (object == null) 
            {

                Utilities.printLog("error message"+e.getMessage());
            }
            else 
            {
                if(object.size()==0)
                {
                    dataRemaing=false;
                    Utilities.printLog("object data remaining"+dataRemaing);
                }

                Utilities.printLog("Size of Object"+object.size());
                for(ParseObject aParseObject :object)
                {
                    final RowItem map = new RowItem();
                    //Utilities.printLog("object size"+object.size());

                    /*final RowItem map = new RowItem();
                    ParseQuery<ParseObject> querylike = ParseQuery.getQuery("Activity");
                    querylike.whereEqualTo("type", "like");
                    querylike.whereEqualTo("Photo", aParseObject);
                    querylike.whereEqualTo("fromUser", ParseUser.getCurrentUser());
                    querylike.findInBackground(new FindCallback<ParseObject>(){
                        @Override
                        public void done(List<ParseObject> objectlike, ParseException e) 
                        {
                            Utilities.printLog("objectlike"+objectlike.size());
                            Utilities.printLog("object of like"+objectlike);
                            if(objectlike.size()>0)
                            {
                                map.setLikecheck(true);
                            }
                            else{
                                map.setLikecheck(false);
                            }
                        }
                    });*/

                    if(aParseObject.getString("mediaLink")!=null)
                    {
                        map.setUserPosetedPic(aParseObject.getString("mediaLink"));
                        map.setImageId(aParseObject.getObjectId());
                        Utilities.printLog("objectid of selected pic in home"+aParseObject.getObjectId());
                        Date updatedAt = aParseObject.getUpdatedAt();
                        String commentdate=Utilities.timeForPost(updatedAt);
                        map.setUserPosetedPicTime(commentdate);
                        int likecount=aParseObject.getInt("likesCount");
                        map.setLikecount(likecount);
                        int commentcount=aParseObject.getInt("commentsCount");
                        map.setCommentCount(commentcount);
                        map.setMediaType(aParseObject.getString("mediaType"));
                        //Utilities.printLog("image link"+aParseObject.getString("mediaLink"));
                        if(aParseObject.get("user")!=null)
                        {

                            ParseUser user=(ParseUser)aParseObject.get("user");
                            map.setUserid(user.getObjectId());
                            Utilities.printLog("home user id"+user.getObjectId());
                            Utilities.printLog("user object id"+user.getObjectId());
                            Utilities.printLog("username"+user.getString("displayName"));
                            map.setUserName((String)user.getString("displayName"));
                            //Uri myprofilePicUri=Uri.parse();
                            ParseFile myprofilepic=user.getParseFile("profilePictureMedium");
                            map.setUserProfilepic(myprofilepic.getUrl());


                        }

                    }

                    RowItemlist.add(map);
                //mAdapter.notifyDataSetChanged();
                }
            }

            updateData();
            if (progress!=null ) 
            {
                progress.cancel();
                progress.dismiss();
            }

        }

    });

i want to check in which post i have liked so that i can highlight the liked button . In for loop i am getting parseobject and the comment part is for checking whether the current post i have liked or not but getting some snchronization problem any help will appriciated

Thanks in Advance Roshani