ios - 在应用程序委托(delegate)中制作窗口 Root View Controller 时收到警告 "Presenting view controllers on detached view controllers is discouraged"？

Question

这是代码

let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyBoard.instantiateViewController(withIdentifier: "homeTBC") as! UITabBarController
self.window?.rootViewController = vc
self.window?.makeKeyAndVisible()

还想不出来。

Answer 1

我已经在我的应用程序中为应用程序委托(delegate)中的 Root View Controller 尝试了这段代码，工作完美:

因为我认为您正在呈现的 View Controller 或呈现的导航 Controller 中使用此代码:请发送场景(屏幕截图)确切说明您在做什么？

    var window: UIWindow?
    window =  UIWindow(frame: UIScreen.main.bounds)
    window?.makeKeyAndVisible()
    let storyBoard = UIStoryboard(name: "Main", bundle: nil)
    let vc = storyBoard.instantiateViewController(withIdentifier: "TabbarVC") as! TabbarVC
    self.window?.rootViewController = vc