android - Custom ListView in Fragment not working -

i'm newbie in android , trying display custom listview in fragment when run display nothing.can me fix that. here code:

    public class tab1 extends fragment         implements listview.onitemclicklistener{      private arraylist<custom> fetch = new arraylist<custom>();     private contactsadapter adapter;     private listview lv;      @override     public view oncreateview(layoutinflater inflater, viewgroup container, bundle saveinstancestate){          view v = inflater.inflate(r.layout.tab_layout, container, false);         custom 1 = new custom("hoang ha", "01672286349");         custom 2 = new custom("ha link", "03203590176");          fetch.add(one);         fetch.add(two);          lv =(listview)v.findviewbyid(r.id.list);          adapter = new contactsadapter(getactivity(), fetch);          lv.setadapter(adapter);          lv.setonitemclicklistener(this);          return v;      }  public class custom{      private string contactname;     private string contactphone;      public custom(string st1, string st2){         contactname = st1;         contactphone = st2;     }      public string getname(){         return contactname;     }      public string getphone(){         return contactphone;     }      public void setname(string st1){         contactname = st1;     }      public void setphone(string st2){         contactphone = st2;     } }      @override     public void onitemclick(adapterview<?> ad, view v, int position,                             long id) {         // todo auto-generated method stub      }      private class contactsadapter extends baseadapter{          private fragmentactivity activity;         private layoutinflater inflater;         private arraylist<custom> data;          public contactsadapter (fragmentactivity a, arraylist<custom> d){             activity = a;             data = d;             inflater = (layoutinflater)activity.getsystemservice(context.layout_inflater_service);         }          @override         public int getcount() {             // todo auto-generated method stub             data.size();             return 0;         }          @override         public object getitem(int position) {             // todo auto-generated method stub             return position;         }          @override         public long getitemid(int position) {             // todo auto-generated method stub             return position;         }              @override             public view getview(int position, view convertview, viewgroup parent) {                 // todo auto-generated method stub                 view v = convertview;                      v = inflater.inflate(r.layout.list_row, null);                  textview contact_name = (textview)v.findviewbyid(r.id.contact_name);                 textview phone_number = (textview)v.findviewbyid(r.id.phone_number);                  //final custom custom = entries.get(position);                 final custom custom = data.get(position);                 contact_name.settext(custom.getname());                 phone_number.settext(custom.getphone());                 return v;         }     }  } 

here tab xml code:

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:background="@color/white"     android:id="@+id/tab_layout" >      <listview         android:id="@+id/list"         android:layout_height="match_parent"         android:layout_width="match_parent"         android:dividerheight="1dp"         android:divider="@color/white"         /> </linearlayout> 

and here list item xml code :

<?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="wrap_content"     android:orientation="vertical"     android:background="@color/light_dark"     android:padding="5dip" >      <textview         android:id="@+id/contact_name"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="@string/name"         android:textcolor="@color/white"         android:typeface="sans"         android:textsize="@dimen/font_medium"         android:textstyle="bold"/>     <textview         android:id="@+id/phone_number"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="@string/name"         android:textcolor="@color/white"         android:typeface="sans"         android:textsize="@dimen/font_small"         />  </linearlayout> 

@override public int getcount() {       return data.size(); }  @override public custom getitem(int position) {      return data.get(position); }