通过导航器切换界面

1.用xib文件创建窗口

        UIStoryboard *futureStoryBoard = [UIStoryboardstoryboardWithName:@"Main"bundle:nil];

UIViewController *portraitViewControl = [futureStoryBoardinstantiateViewControllerWithIdentifier:@"selfService"];

    

        请参考：用xib文件创建窗口 

2.压入视图栈

      [self.navigationControllerpushViewController:portraitViewControl animated:YES];