ArrayAdapter string, listView (numbers.xml) and then setAdatper to listview, pass item Adapter variable (which is an ArrayAdapter<String>)

ArrayAdapter<String> itemsAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, numbersList);

        ListView listView = (ListView) findViewById(R.id.list);

        listView.setAdapter(itemsAdapter);