java - ListView in TabHost -

i'm trying put listview (existing list named siteslist) in tabhost when run app, closes (without code tabhost app works), here code:

public class mainactivity extends tabactivity {      private sitesadapter madapter;     private listview siteslist;     private static final string noutati = "noutati";     private static final string favorite = "favorite";     private static final string profile_spec = "profile";      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         log.i("stacksites", "oncreate()");         setcontentview(r.layout.activity_main);           tabhost tabhost = gettabhost();           tabspec inboxspec = tabhost.newtabspec(noutati);         intent inboxintent = new intent(this, noutati.class);         inboxspec.setcontent(inboxintent);           tabspec outboxspec = tabhost.newtabspec(favorite);         //intent outboxintent = new intent(this, outboxactivity.class);         //outboxspec.setcontent(outboxintent);          tabhost.addtab(inboxspec);          tabhost.addtab(outboxspec);            siteslist = (listview)findviewbyid(r.id.siteslist);          ...    public class noutati extends listactivity {      private listview siteslist;      public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.noutati);         siteslist = (listview)findviewbyid(r.id.siteslist);         this.setlistadapter((android.widget.listadapter) siteslist);      } } 

activity_main

<tabhost xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/tabhost" android:layout_width="fill_parent" android:layout_height="fill_parent">  <linearlayout     android:orientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent">      <tabwidget         android:id="@android:id/tabs"         android:layout_width="fill_parent"         android:layout_height="wrap_content" />      <framelayout         android:id="@android:id/tabcontent"         android:layout_width="fill_parent"         android:layout_height="fill_parent"/>  </linearlayout> 

noutati.xml

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" >  <listview     android:id="@+id/siteslist"     android:layout_width="fill_parent"     android:layout_height="wrap_content" />  </linearlayout> 

thank much

edit: see have named variable noutati , class noutati. thy changing variable noutatiname.

as have never encountered before, i'm not sure work, error appears because have set indicator each tab spec.

so after tabspec inboxspec = tabhost.newtabspec(noutati); should type inboxspec .setindicator("notuati");

hope helps!

also should after tabspec outboxspec = tabhost.newtabspec(favorite);

link