android - tabhost groupactivity not working(deprecated) -

public class feedback extends activitygroup { protected static localactivitymanager mlocalactivitymanager;  private edittext fd=null; private button send=null; public int res_flag=0; public string result=""; public string url=""; private relativelayout newaccount; private textview needhelp=null; private string currentdateandtime=""; private boolean isonline;  protected string fd_text="";  public void replacecontentview(string id, intent newintent) {     view view = getlocalactivitymanager().startactivity(id,newintent.addflags(intent.flag_activity_clear_top)) .getdecorview(); this.setcontentview(view);     }     @override protected void oncreate(bundle savedinstancestate) {     // todo auto-generated method stub     super.oncreate(savedinstancestate);     setcontentview(r.layout.feedback);     initialization();      try{         simpledateformat sdf = new simpledateformat("yyyy-mm-dd hh:mm:ss");         currentdateandtime = sdf.format(new date());     }catch (exception e) {         system.out.println(e);     }      send.setonclicklistener(new view.onclicklistener() {          @override         public void onclick(view v) {         new feedback.retrieve().execute();        }      });   }  private void initialization() {     fd=(edittext)findviewbyid(r.id.fd);     send=(button)findviewbyid(r.id.send);  }    class retrieve extends asynctask<void, integer, integer> {      progressdialog pd = null;       @override     protected void onpreexecute() {         // todo auto-generated method stub         super.onpreexecute();         pd = new progressdialog(feedback.this);         pd.setmessage("please wait while sending feedback..");         pd.setcancelable(false);         pd.show();      }      @override     protected integer doinbackground(void... params) {           try{                 system.out.println("in bkgrnd");              strictmode.threadpolicy policy1 = new strictmode.threadpolicy.builder().permitall().build();             strictmode.setthreadpolicy(policy1);                url="url"+fd_text.tostring().trim()+"&datetime="+currentdateandtime;             url=url.replace(" ","%20");             url=url.replace("+","%2b");              system.out.println(url);           jsonobject json = jsonfunctions.getjsonfromurl(url);           jsonobject response1=json.getjsonobject("response");           result=response1.getstring("success").tostring().trim();           system.out.println(result);          if(result.equalsignorecase("1"))          {              system.out.println("logged in");               res_flag=1;            }          else          {              system.out.println("failed");              res_flag=5;          }             }                 catch (jsonexception e) {                     system.out.println(e);                 }catch (exception e) {                     system.out.println(e);                 }                return null;      }      @override     protected void onpostexecute(integer result) {         super.onpostexecute(result);         pd.dismiss(); 

}

error is: android.view.windowmanager$badtokenexception: unable add window -- token android.app.localactivitymanager$localactivityrecord@40e16110 not valid; activity running?

problem

i calling activity through tabhost.,it loading view .the webservice , button not working ., when click buttons shows above error.help me proceed guys..

reference: http://www.gamma-point.com/content/android-how-have-multiple-activities-under-single-tab-tabactivity

now activitygroup deprecated.., should use now..

for have posted, doesn't seem need use activitygroup @ all. extend feedback activity class. example:

public class feedback extends activity