hi all.
l am developing a android client with asmack,l have a problem using UserSearchManager to search user on server,the console show nullPointException as follows;
10-28 03:15:18.790: E/AndroidRuntime(1596): java.lang.NullPointerException
10-28 03:15:18.790: E/AndroidRuntime(1596): at com.openfirejunit.MainActivity.search(MainActivity.java:51)
this is my code:
ProviderManager manager = ProviderManager.getInstance();
manager.addIQProvider(“query”, “http://jabber.org/protocol/disco#items”, new DiscoverItemsProvider());
manager.addIQProvider(“query”, “http://jabber.org/protocol/disco#info”, new DiscoverInfoProvider());
UserSearchManager usm = new UserSearchManager(conn);
Form searchForm = null;
try {
List services = new ArrayList();
services.addAll(usm.getSearchServices());
// Out.println("service "+services.get(1));
searchForm = usm.getSearchForm(services.get(1)); //here is line 51,show nullPointException
Out.println("null "+(searchForm==null)); // here console 10-28 03:39:22.471: I/System.out(8220): null true
// Out.println("type "+searchForm.getType());
Form answerForm = searchForm.createAnswerForm();
answerForm.setAnswer(“last”, “liu”);
ReportedData data = usm.getSearchResults(answerForm,
host);
when running,it shows services.get(1) is “search.wechat.com” service;
I am happy to know if anyone has similar problems or has possible fixes already.