CODEWITHSUNDEEP
androidandroid-studioparse-platform
elperro
elperro

Reputation: 38

SubClass ParseObject Cannot resolve method

I am trying to SubClass a ParseObject, which seems to work ok except the method can't be resolved. Android Studio seems to be able to find the class - at least the IDE links back to the original class PhotoSession, it just can't find the method and I get a cannot resolve method error.

import com.parse.ParseClassName;
import com.parse.ParseObject;


@ParseClassName("PhotoSession")
public class PhotoSession extends ParseObject {

    public PhotoSession() {

    }

    public void setDisplayName(String value) {

        put("displayName", value);

    }
}

Creating a PhotoSession object from another class:

private void createNewSession() {

    ParseUser user = ParseUser.getCurrentUser();
    ParseObject photoSession = new PhotoSession();
    photoSession.setDisplayName("test session");

}

I've registered the class in the Application class before Parse.initialize(...) like so:

 ParseObject.registerSubclass(PhotoSession.class);

Upvotes: 0

Views: 658

Answers (1)

Lucas Crawford
Lucas Crawford

Reputation: 3118

Look closely here:

private void createNewSession() {
    ParseUser user = ParseUser.getCurrentUser();
    ParseObject photoSession = new PhotoSession();
    photoSession.setDisplayName("test session");
}

The problem is this line: 

ParseObject photoSession = new PhotoSession();

You are creating a new PhotoSession object but with type ParseObject. Create it with type PhotoSession instead:

PhotoSession photoSession = new PhotoSession();

Since PhotoSession is a subclass of ParseObject, it is valid to declare a new PhotoSession as a type ParseObject. You don't want that though, because that is casting it to it's parent class, which removes any specific methods that exist in a PhotoSession object. This is called upcasting, and in this case you do not want to do that

Upvotes: 2

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