Question

我正在尝试在首次启动应用时在黑屏上运行启动动画，然后转换到初始视图控制器。为此，我将launchscreen.storyboard视图控制器设置为黑色，然后在我创建的didFinishLaunchingWithOptions中将动画作为子视图（如下所示）在appDelegate中运行。目前，应用程序在黑屏上启动，动画淡入，睡眠和淡出，但即使初始视图控制器设置为空白背景，也会停留在黑屏上。我已经尝试了多个完成块来将应用程序发送到下一个视图控制器，例如删除子视图或尝试再次使用rootViewController强制它但没有这样的运气。我很确定它只是我需要的一行代码，但我似乎无法弄明白。

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    self.window = UIWindow(frame: UIScreen.main.bounds)
    let imageView = UIImageView(frame: self.window!.frame)
    imageView.loadGif(name: "splashanimation")
    imageView.alpha = 0.0
    self.window!.addSubview(imageView)
    let emptyView = UIViewController()
    self.window?.rootViewController = emptyView
    self.window!.makeKeyAndVisible()
    UIView.animate(withDuration: 1.0, animations: {imageView.alpha = 1}, completion: { (value: Bool) in UIView.animate(withDuration: 1.0, animations: {sleep(UInt32(1.5))}, completion: { (value: Bool) in UIView.animate(withDuration: 2.0, animations: {imageView.alpha = 0}, completion: { 

            ** SOMEHOW OPEN THE FIRST VIEW CONTROLLER **


            })})})
    UIApplication.shared.isStatusBarHidden = true
    return true
}

Answer 1

let storyboard = UIStoryboard(name: "Main", bundle: nil)

let initialViewController = storyboard.instantiateViewControllerWithIdentifier("HomeView") as UIViewController

self.window?.rootViewController = initialViewController
self.window?.makeKeyAndVisible()

这会设置故事板的实例，然后就像使用launchscreen一样，只需将哪个VC设置为初始值。

初始化动画结束后更改视图控制器

1 个答案: