ios - TabBar 隐藏在 viewDidLoad 中但不隐藏在手势功能中

Question

我尝试在 viewDidLoad() 中调用 tabBarController!.tabBar.hidden = true，它隐藏了 TabBar。但是，我尝试设置点击手势并隐藏点击栏。父 viewController 内部有 ScrollView 和 subview (作为 myView 与 IBOutlet 连接)

override func viewDidLoad() {
        super.viewDidLoad()

        let tap = UITapGestureRecognizer(target: self, action: Selector("handleTap:"))
        myView.addGestureRecognizer(tap)
}

func handleTap(sender: UITapGestureRecognizer? = nil) {
   print("A") // logs successfully
           if TabBarHidden == false {
               print("B") // logs successfully

               //I tried:
               tabBarController?.tabBar.hidden = true

               // I also tried
               tabBarController?.tabBar.alpha = 0
               tabBarController?.tabBar.frame.origin.x += 50
               hidesBottomBarWhenPushed = true


           } else {
               ...
               TabBarHidden = false
           }
    }

hidden 当我像我说的那样在 viewDidLoad 中调用它时确实有效，但如果我调用点击手势功能则无效。可能是什么问题？我错过了什么？

Answer 1

这段代码完全适合我:

class ViewController: UIViewController {
    var tabBarHidden: Bool = false {
        didSet {
            tabBarController?.tabBar.hidden = tabBarHidden
        }
    }

    override func viewDidLoad() {
        super.viewDidLoad()

        let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(tapGestureRecognized(_:)))
        view.addGestureRecognizer(tapGestureRecognizer)
    }

    func tapGestureRecognized(sender: UITapGestureRecognizer) {
        tabBarHidden = !tabBarHidden
    }
}