ios - SWIFT基础请教ViewController 跳至 UITabBarcontroller ，tabbar始终不出现？

Question

pushViewController、presentViewController、instantiateViewControllerWithIdentifier都试过，始终是没有tabbar出现

storyboard结果为

代码直接跳转到navigation的！这样有什么错吗？为什么下面的tabbar不显示？

Answer 1

Try to use the view layer viewing tool to debug and first see if the checkout button blocks the tabbar

Answer 2

Are you pushing tabbarViewController?
It means click checkout and then push to the next page tabbarViewcontroller?
Or just dismiss it after settlement?