android - ListView is not populating -

i created adapter populate custom listview , when ran on emulator activity blank. plz help. sure i'm missing 'cause new java & android. code snippets correct , pointers appreciated. thnx!

my activity:

public class list_ac3 extends listactivity {  /**  * -- called when activity first created  * ===================================================================  */ @override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     requestwindowfeature(window.feature_no_title);     setcontentview(r.layout.list_view2);      displayresultlist(); }  private void displayresultlist() {     cursor databasecursor = null;     domainadapter databaselistadapter = new domainadapter(this, r.layout.list_item, databasecursor,              new string[] {"label", "title", "description"},              new int[] { r.id.label, r.id.listtitle, r.id.caption });             databaselistadapter.notifydatasetchanged();             setlistadapter(databaselistadapter); } } 

my adapter:

public class domainadapter extends simplecursoradapter{  private layoutinflater minflater; string extstoragedirectory;  public domainadapter(context context, int layout, cursor c, string[] from,         int[] to) {     super(context, layout, c, from, to);         minflater = layoutinflater.from(context); }  public view getview(int position, view convertview, viewgroup parent) {      viewholder holder;      if (convertview == null) {         convertview = minflater.inflate(r.layout.list_item, null);          holder = new viewholder();         holder.text1 = (textview) convertview.findviewbyid(r.id.label);         holder.text2 = (textview) convertview.findviewbyid(r.id.listtitle);         holder.text3 = (textview) convertview.findviewbyid(r.id.caption);          convertview.settag(holder);      } else {         holder = (viewholder) convertview.gettag();     }      extstoragedirectory = environment.getexternalstoragedirectory().tostring();     file dbfile = new file(extstoragedirectory+ "/aero-technologies/flydroid/db/flydroid.db");     sqlitedatabase db = sqlitedatabase.openorcreatedatabase(dbfile, null);     cursor data = db.rawquery("select * ac_list", null);      data.movetoposition(position);      int label_index = data.getcolumnindex("label");      string label = data.getstring(label_index);      int title_index = data.getcolumnindex("title");      string title = data.getstring(title_index);      int description_index = data.getcolumnindex("description");      string description = data.getstring(description_index);      holder.text1.settext(label);     holder.text2.settext(title);     holder.text3.settext(description);      return convertview;     }      static class viewholder {         textview text1;         textview text2;         textview text3;     }   } 

the list_view2.xml:

 <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation="vertical"   android:layout_width="fill_parent"  android:layout_height="fill_parent" >  <relativelayout     android:layout_width="fill_parent"     android:layout_height="30dip"      android:padding="4dip"     android:background="@drawable/gradient" >      <imagebutton         android:id="@+id/homebtn"         android:src="@drawable/ic_menu_icon"         android:layout_width="wrap_content"          android:layout_height="match_parent"         android:layout_alignparentleft="true"         android:background="@null" />      <textview         android:id="@+id/titlebartitle"         android:layout_centerinparent="true"         android:layout_width="wrap_content"          android:layout_height="match_parent"         android:textsize="18sp" />      <imagebutton         android:id="@+id/toolbtn"         android:src="@drawable/ic_menu_list"         android:layout_width="wrap_content"          android:layout_height="match_parent"         android:layout_alignparentright="true"         android:background="@null" />  </relativelayout>  <listview     android:id="@id/android:list"     android:layout_height="wrap_content"    android:layout_width="fill_parent" />  </linearlayout> 

and list_item.xml:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/acitem" style="@style/listitem" >  <textview     android:id="@+id/label"     style="@style/listacronym" />  <textview     android:id="@+id/listtitle"     style="@style/listtitle" />  <textview     android:id="@+id/caption"     style="@style/listdiscription"/>          <imageview     style="@style/listnexticon" />     </relativelayout> 

the google notepad tutorials should iirc should using cursors passed listview