Mgiyuk

Cannot resolve constructor in ArrayAdapter using API data For a school project we are making an API based application and now we need to get data from an URL and add into an Spinner(Dropdown). Everything works (I think, haven't even gotten to test it) while getting the data, but inserting the data using an ArrayAdapter is giving me headaches. Below is my FetchData class: package com.example.prege.randomklasgenerator; import android.app.Activity; import android.os.AsyncTask; import android.widget.ArrayAdapter; import android.widget.Toast; import org.json.JSONArray; import org.json.JSONObject; private String data = ""; private ArrayList<String> klaslist = new ArrayList<>(); @Override protected Void doInBackground(Void... voids) { try { URL url = new URL("http://mgroesink-001-site12.itempurl.com/api/student?studentclass=" + MainActivity.etKlas.getSelectedItem().toString()); HttpURLConnection urlConnection = (HttpURLConnection)url.ope...