How should I do? ParseQueryAdapter

Question

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.

score 0 · Answer 1 · answered Mar 20 '15 at 06:50

0

By default ParseQuery will not fetch relationship objects. You need to include relationship objects in ParseQuery.

ParseQuery<Post> postQuery= new ParseQuery<Post>("Post");
postQuery.include("likes");

answered Mar 20 '15 at 06:50

Rutvij Shah

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4
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oh.. I don't know include method. I find ParseQuery reference . I don't know the way using that. I want to show a example link using this method. – Jun Seok Kim Mar 21 '15 at 09:59
I think this way is unefficient because it may need more request per item at getItemView() method.. – Jun Seok Kim Mar 21 '15 at 10:03
Nope. It won'tt require more request. Its way to fetch associated object with the object in same call. – Rutvij Shah Mar 22 '15 at 04:22
How do I use this method include()? "Likes" need to call getReltion("Likes) method of current user. – Jun Seok Kim Mar 24 '15 at 10:56

score 0 · Accepted Answer · answered Mar 23 '15 at 19:10

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?

hmm... I think this way is for only one user. When each user is loading posts, bacause each of users have different liking posts, boolean column is different for them.. if I perform getRelation() and change the boolean column and Totally load posts with ParseQuery , I have to use many requests at Parse.com... — Jun Seok Kim, Mar 24 '15 at 10:28

How should I do? ParseQueryAdapter

2 Answers2