android - Using ListView to start new activities -

i have problem when create listview because i'm not able start new activities. code

public class mainactivity extends activity {      static final string[] modules = new string[] { "modulo 442", "modulo 433" };       /** called when activity first created. */     @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);         arrayadapter<string> codelearnarrayadapter = new arrayadapter<string>(                 this, android.r.layout.simple_list_item_1, modules);         listview codelearnlessons = (listview) findviewbyid(r.id.listview);         codelearnlessons.setadapter(codelearnarrayadapter);     }      protected void onlistitemclick(listview l, view v, int pos, long id) {          if (pos==0){             intent intent = new intent(this, module442.class);             startactivity(intent);         }         else if (pos==1){             intent intent = new intent(this, module433.class);             startactivity(intent);         }      } } 

and code of layout file:

<relativelayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent" >        <listview android:id="@+id/listview"               android:layout_height="match_parent"               android:layout_width="match_parent"/>  </relativelayout> 

when click on options nothing happen...

this new activity:

public class module442 extends activity {      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_module442);     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.module442, menu);         return true;     }  } 

thanks help!!!!

solved

public class mainactivity extends activity {

/** called when activity first created. */  listview list; private string array[] = { "modulo 442", "modulo 433" };  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);     list = (listview) findviewbyid(r.id.list);     list.setadapter(new arrayadapter<string>(this,             android.r.layout.simple_list_item_1, array));      list.setonitemclicklistener(new onitemclicklistener() {         @override         public void onitemclick(adapterview<?> paramadapterview,                 view paramview, int position, long paramlong) {             switch (position) {             case 0:                 intent newactivity0 = new intent(mainactivity.this,                         module442.class);                 startactivity(newactivity0);                 break;             case 1:                 intent newactivity1 = new intent(mainactivity.this,                         module433.class);                 startactivity(newactivity1);                 break;             }         }     }); } 

}

you want this:

codelearnlessons.setonitemclicklistener(new onitemclicklistener() {     @override     public void onitemclick(adapterview<?> parent, view view, int position,         long id) {      if (position ==0){         intent intent = new intent(this, module442.class);         startactivity(intent);     }     else if (position ==1){         intent intent = new intent(this, module433.class);         startactivity(intent);     }      } });