Usually exceptions are your clue as to what went wrong. And debuggers are your best tool for understanding what triggered that exception, and where.
Since you don't tell us the exception or where, I'm afraid you have all the information you'll need to figure this out -- and we do not. Good luck. On Apr 20, 11:44 pm, Naveen <[email protected]> wrote: > HI! > My goal is to find network printers using jmdns > > Following is the code I have written which does not work. I am new to > all this Pls. help me. > What exactly I want to do is to list all printers in list > box...Currently I am not filtering printers.. > > I am always getting exception... Here is my code > > public class ListPrinters extends ListActivity { > public static JmDNS jmdns; > public static JmDNSImpl impl; > protected ServiceListener listener; > protected ServiceInfo info; > > public ListView lv; > public ArrayList<String> PrinterList; > public int cancel =0; > > public final static String TAG = "ListPrinter"; > > /** Called when the activity is first created. */ > @Override > public void onCreate(Bundle savedInstanceState) { > super.onCreate(savedInstanceState); > setContentView(R.layout.list_printers); > > showAllPrinters(); > PrinterList = new ArrayList<String>(); > PrinterList.add("First Node"); /// just for checking > setListAdapter(new ArrayAdapter<String>(this, > android.R.layout.simple_list_item_1 , PrinterList)); > lv = getListView(); > lv.setTextFilterEnabled(true); > lv.setOnItemClickListener(new OnItemClickListener() > { > public void onItemClick(AdapterView<?> parent, View > view, > int position, long id) > { > // When clicked, show a toast with the > TextView text > Toast.makeText(getApplicationContext(), > ((TextView) > view).getText(), > Toast.LENGTH_SHORT).show(); > > if (jmdns != null) > { > > > ListPrinters.jmdns.removeServiceListener("_http._tcp.local.", > listener); > ListPrinters.jmdns.close(); > ListPrinters.jmdns = null; > ListPrinters.impl = null; > > } > } > }); > > this.listener = new ServiceListener() { > > public void serviceAdded(ServiceEvent event) { > > PrinterList.add("Service added : " > + event.getName() + "." + > event.getType()); > Log.v(TAG,"Service added : " + > event.getName() + "." + > event.getType()); > } > > public void serviceRemoved(ServiceEvent > event) { > PrinterList.add("Service removed : " > + event.getName() + "." + > event.getType()); > Log.v(TAG,"Service removed : " + > event.getName() + "." + > event.getType()); > } > > public void serviceResolved(ServiceEvent > event) { > PrinterList.add("Service resolved: " > + event.getInfo()); > Log.v(TAG,"Service resolved: " + > event.getInfo()); > } > > }; > > } > > public void showAllPrinters() > { > try > { > ListPrinters.jmdns = JmDNS.create(); > ListPrinters.jmdns.addServiceListener("_http._tcp.local.", > listener); > ListPrinters.impl = (JmDNSImpl)jmdns; > > } > catch (IOException e) > { > e.printStackTrace(); > } > } > > } > > -- > You received this message because you are subscribed to the Google > Groups "Android Developers" group. > To post to this group, send email to [email protected] > To unsubscribe from this group, send email to > [email protected] > For more options, visit this group > athttp://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
