Listview.setadapter raising nullpointer exception

Question

The code is as below

    public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    Intent i = getIntent();

        ArrayLis         


        

Answer 1

what is this ?

 UrlList urlList;
 urlList = XMLParser.urlList;

and what is it doing here?

String[] categoryNameStrings = urlList.getCategoryName().toArray(new String[0]);

Can you please post the error log?