java - Android Restlet Wrap Crashing -

i using android 1.6 , restlet android edition 2.0.7...

it crashes on wrap():

clientresource cr = new clientresource("http://myapp.appspot.com/restlet/"); irestletresource r = cr.wrap(irestletresource.class); mydata[] ss = r.getdatas(); 

saying that

05-10 20:40:56.272: error/androidruntime(435): java.lang.runtimeexception: unable start activity componentinfo{se.myapp.android/se.myapp.android.myappandroid}: java.lang.nosuchmethodexception ... 05-10 20:40:56.272: error/androidruntime(435): caused by: java.lang.nosuchmethodexception 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.class.getdeclaredmethods(native method) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.classcache.getdeclaredpublicmethods(classcache.java:166) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.classcache.getdeclaredmethods(classcache.java:179) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.classcache.findallmethods(classcache.java:249) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.classcache.getfulllistofmethods(classcache.java:223) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.classcache.getallpublicmethods(classcache.java:204) 05-10 20:40:56.272: error/androidruntime(435):     @ java.lang.class.getmethods(class.java:1038) 05-10 20:40:56.272: error/androidruntime(435):     @ org.restlet.engine.resource.annotationutils.addannotations(annotationutils.java:131) 05-10 20:40:56.272: error/androidruntime(435):     @ org.restlet.engine.resource.annotationutils.getannotations(annotationutils.java:231) 05-10 20:40:56.272: error/androidruntime(435):     @ org.restlet.resource.clientresource.wrap(clientresource.java:1541) 05-10 20:40:56.272: error/androidruntime(435):     @ se.myapp.android.myappandroid.oncreate(myappandroid.java:61) ... 

interface looks like

public interface irestletresource  {     @get     public mydata[] getdatas(); } 

serverside restletresource looks this:

public class restletresource extends serverresource implements irestletresource {     mydata[] m_datas;      @override       protected void doinit() throws resourceexception      {            m_datas = new mydata("carl",32);     }         @get     public mydata[] getdatas()     {         return m_datas; //return new mydata("..",1); still crashes.     } } 

mydata looks this:

public class mydata implements serializable {     private static final long serialversionuid = 1l;      private string  m_name;     private int     m_age;      public mydata()     {      }      public mydata(string n, int a)     {         m_name = n;         m_age = a;     }     //... } 

now. not crash if change resource return string instead of mydata[]. still crash if return 1 instance of mydata instead of array.

turns out need

engine.getinstance().getregisteredconverters().add(new jacksonconverter()); 

on client side, aswell as

getconnectorservice().getclientprotocols().add(protocol.file); 

in application on srver side..