我知道,在 SwiftUI 中,初始启动视图取决于场景委托。所以,有这样的事情:
func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
// Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
// If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
// This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
// Create the SwiftUI view that provides the window contents.
//let contentView = ContentView() //only uncomment when messing with user db
let contentView = FirstView()
// let contentView = BarView(value: 3)
// Use a UIHostingController as window root view controller.
if let windowScene = scene as? UIWindowScene {
let window = UIWindow(windowScene: windowScene)
window.rootViewController = UIHostingController(rootView: contentView)
self.window = window
window.makeKeyAndVisible()
}
}
我本质上是在告诉 Swift 打开 contentView 的 rootView,在这种情况下它等于 FirstView()。每次打开应用程序时都会运行它,假设它之前已关闭(即不在后台运行)
但是,如果应用程序在后台运行(即您只需在 iPad 上按一次主页按钮或其他任何东西),并且用户再次打开它,应用程序将记住用户上次进入的视图,并恢复该视图。有没有办法改变这种行为?我可以通过某种方式修改场景委托,以便当应用程序在后台运行并且用户打开应用程序时,视图将更改为特定视图?
谢谢。