AutoCompleteText View using webservice api Giving me error in Android

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http://stackoverflow.com – I am trying to do the autocompleteTextView. I am trying the Wiki Example. For Wiki it works. But for my own api its not working. I am trying to call by lastname. I tried using the jSonObject. But looks like i am making some mistake. Here is my Code. public class WikiSuggestActivity extends Activity { public String data; public List<String> suggest; public AutoCompleteTextView autoComplete; public ArrayAdapter<String> aAdapter; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); s (HowTos)