如何在 Swift 中隐藏第一个 ViewController 的导航栏?

How to hide a navigation bar from first ViewController in Swift?(如何在 Swift 中隐藏第一个 ViewController 的导航栏?)

问题描述

如何快速隐藏第一个 ViewController 或特定 ViewController 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 隐藏了导航控制器.

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该使栏可见，则可以使用 viewWillDisappear 将其再次设置为可见.

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

在斯威夫特中:

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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