(Swift) UINavigationController常用

• 控制导航栏在用户点击屏幕时，是否自动隐藏

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.hidesBarsOnTap = true
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        navigationController?.hidesBarsOnTap = false
    }

• 控制导航栏在用户向下滑动屏幕时，是否自动隐藏

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        navigationController?.hidesBarsOnSwipe = true
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        navigationController?.hidesBarsOnSwipe = false
    }