如何在Swift中从第一个ViewController隐藏导航栏? [英] How to hide a navigation bar from first ViewController in Swift?

问题描述

如何快速隐藏第一个ViewController或特定ViewController中的导航栏?

How can I hide a navigation bar from first ViewController or a particular ViewController in swift?

我在viewDidLoad()中使用了以下代码:

I used the following code in viewDidLoad():

override func viewDidLoad() {
    super.viewDidLoad()
    self.navigationController?.isNavigationBarHidden = true
}

以及viewWillAppear:

override func viewWillAppear(animated: Bool) {
    self.navigationController?.isNavigationBarHidden = true
}

这两种方法都对所有ViewController隐藏导航控制器.

Both methods hide the navigation controller from all ViewControllers.

推荐答案

如果您知道所有其他视图都应显示该栏，则可以使用viewWillDisappear将其重新设置为可见.

If you know that all other views should have the bar visible, you could use viewWillDisappear to set it to visible again.

在Swift中:

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

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

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