How should I do? ParseQueryAdapter

I want to make SNS android application. Posts that users have posted and relations("Likes") are loaded from my Parse.com server. I succeeded in loading posts using parseQueryAdapter and ListView in a Fragment. But relation ("Likes") query loading event can not be loaded.

ParseQueryAdapter<Post> mainAdapter;
ParseQueryAdapter.QueryFactory<Post> factory;
factory = new ParseQueryAdapter.QueryFactory<Post>() {
        @Override
        public ParseQuery<Post> create() {
            ParseQuery query = new ParseQuery("Post");
            query.whereEqualTo("Post_Liked", true);
            return query;
        }
    };
mainAdapter = new ParseQueryAdapter<Post>(this, factory) {
@Override
public View getItemView(final Post object, View v, ViewGroup parent) {
    if (v == null) {
        v = View.inflate(getContext(), R.layout.your_list_view, null);
    }
    return v;
}};

So why don't you just make it so that the user can set a post to "liked" or "not liked" with true and false respectively?