How does AsyncTask<String, Void, Void> work?

Question

Could anyone tell me what is going wrong here?

public class BackgroungTask extends AsyncTask<String, Void, Void> {

    public Void doInBackground(String... params) {
       //tasks
       return;  //error occurs here!
    }

    public void onPostExecute(Void result) {
        //codes
    }
}

The above class does not depend on return values. So onPostExceute() simply execute codes written in there.

Thanks in advance!

Answer 1

just return null.

public class BackgroungTask extends AsyncTask<String, Void, Void> {

    public Void doInBackground(String... params) {
       //tasks
       return null; 
    }

    public void onPostExecute(Void result) {
        //codes
    }
}