android - InflateExceptionError- line 40 -

so every time switch 1 activity has listview component, keep getting inflateexception when tries load list view. here code activity list view:

public class userindexactivity extends activity {      private accountdao accountdatasource;     public static final string prefs_name = "mypreferencefile";      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_user_index);          accountdatasource = new accountdao(this);         accountdatasource.open();          sharedpreferences settings = getsharedpreferences(prefs_name, 0);         string userid = settings.getstring("userid", "default");         list<account> acclistquery = accountdatasource.getallaccounts(userid);         list<string> list = new arraylist<string>();         for(account : acclistquery)             list.add("account name: " + a.getdisplayname() + " \t balance: " + a.getbalance() + " \t interest rate: " + a.getinterestrate()); //      arraylist<string> list = new arraylist<string>(); //      list.add("asdfasdfasfd"); //      list.add("asdfasfas"); //      list<string> list = (arraylist)accountdatasource.getallaccounts(userid);         listview listview = (listview)findviewbyid( r.id.listview);         final arrayadapter<string> adapter = new arrayadapter<string>( this, android.r.layout.simple_list_item_1, list );         listview.setadapter( adapter );         listview.setclickable(true);         final listview tempview = listview;         listview.setonitemclicklistener(new adapterview.onitemclicklistener() {              public void onitemclick(adapterview<?> arg0, view arg1, int position, long arg3) {                  account o = (account)tempview.getitematposition(position);                  intent intent = new intent(userindexactivity.this,transactionactivity.class);                  startactivity(intent);              }          });     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.user_index, menu);         return true;     }      public void addaccount(view view){         intent intent = new intent(this, addaccountactivity.class);         startactivity(intent);     } } 

how hell fix error?