如何在新 window 中推送 ViewController

Question

我需要通过代码将 viewController 推送到新的 window 中。我正在执行以下代码，但它不起作用。

let win = UIWindow(frame: UIScreen.main.bounds)
let nc = UINavigationController(rootViewController: self)
nc.view.backgroundColor = .clear
win.rootViewController = nc

win.windowLevel = UIWindow.Level.alert + 1
win.makeKeyAndVisible()

有谁知道如何在新 window 中推送 viewController？

Answer 1

Swift 5.x

下面的代码有效

取了全局变量：

var window2 : UIWindow?

修改后的代码如下

let win = UIWindow(frame: UIScreen.main.bounds)
let nc = UINavigationController()
nc.pushViewController(self, animated: true)
nc.navigationBar.isHidden = true
nc.view.backgroundColor = .clear
win.rootViewController = nc
window2 = win
win.windowLevel = UIWindow.Level.alert + 1
win.makeKeyAndVisible()

并关闭新的 window 我在下面做了

if let nc = window2?.rootViewController as? UINavigationController {
    nc.popViewController(animated: true)
}

window2?.resignKey()
window2 = nil

注意：它不显示推送和弹出默认动画，目前它正在工作w/o任何类型的动画。

参考： To create a new UIWindow over the main window

如何在新 window 中推送 ViewController

How to Push ViewController in new window

uinavigationcontroller

ios

Swift 5.x