我们如何在 Swift 中单击第一个 VC 时打开标签栏

Question

我有一个 VC，它在单击按钮时想要打开第一个索引上的标签栏 VC。我想通过现在的风格打开这个。我家的 vc 在标签栏的第一个索引上。我怎么能打开它？我的用户界面看起来像这样，

我试过的代码是这样的，

 let storyboard = UIStoryboard(name: "Main", bundle: nil)
                let tabbarVC = storyboard.instantiateViewController(withIdentifier: "MainVC") as! MainVC
                if let vcs = tabbarVC.viewControllers,
                    let nc = vcs.first as? UINavigationController,

                self.present(tabbarVC, animated: false, completion: nil)

Answer 1

你可以给个id直接打开

let first = storyboard.instantiateViewController(withIdentifier: "firstID") 
self.present(first , animated: false, completion: nil)

//

 let storyboard = UIStoryboard(name: "Main", bundle: nil)
 let tabbarVC = storyboard.instantiateViewController(withIdentifier: "MainVC") as! MainVC
 self.present(tabbarVC, animated: false, completion: nil)