title: BarButton wont appear in navigation menu Objective -C
body: <p>Story: </p>
  
  <p>I try to create a easy Login app (the username and pw are saved in the <code>SQlite</code> db) i have 3 properties two <code>Labels</code> and a <code>BarButton</code> . the labels are working but the <code>BarButton</code>  wont appear i really dont know why .. i tried it several-times but somehow i cant find my error im using <code>Xcode 4.5.2</code> /developing on <code>iPhone SDK 6.0 /Master-Detail Application Layout</code>, im not using the <code>Storyboard</code> im using a <code>Xib-File</code>.</p>
  
  <pre><code>-(void) keyboardAppearance{
      if(isKeyboardVisible == FALSE){
          isKeyboardVisible = true;
          UIBarButtonItem *btnGo = [[UIBarButtonItem alloc]initWithTitle:@"Login" style:UIBarButtonItemStyleBordered target:self action:@selector(loginAction)];
          self.navigationItem.rightBarButtonItem = btnGo;
      }
  }
  </code></pre>
  
  <p>Any help appreciated </p>