我已经检查了这个问题的大部分答案,但主要是针对Cocoa Touch。我需要在我的appdelegate中为mac应用程序实现这一点。
一旦用户登录,他将被重定向到主屏幕,否则进入登录屏幕。
let controller:NSWindowController = NSWindowController()
let viewController:NSViewController
let storyboard = NSStoryboard.init(name: "Main", bundle: nil)
let stringLoginStatus = NSUserDefaults.standardUserDefaults().objectForKey(Constants.Key_LoginStatus) as? String
if stringLoginStatus != nil
{
if stringLoginStatus == "true"
{
viewController = storyboard.instantiateControllerWithIdentifier("Channel") as! NSViewController
}
else{
viewController = storyboard.instantiateControllerWithIdentifier("ViewController") as! NSViewController
}
}
else{
viewController = storyboard.instantiateControllerWithIdentifier("ViewController") as! NSViewController
}
controller.window?.contentViewController = viewController
controller.window?.makeKeyAndOrderFront(self)
它显示和错误,因为控制器未初始化。
尝试此代码来更改您的视图控制器: -
UIApplication.appWindow.rootViewController = UIStoryboard.main.instantiateViewController(withIdentifier: "customViewControl")
// MARK:使用UIApplication扩展来获取appWindow
extension UIApplication {
class var appWindow: UIWindow! {
return (UIApplication.shared.delegate?.window!)!
}
}
// MARK:制作Storyboard扩展程序以获取主屏幕
extension UIStoryboard {
class var main: UIStoryboard {
let storyboardName: String = Bundle.main.object(forInfoDictionaryKey: "UIMainStoryboardFile") as! String
return UIStoryboard(name: storyboardName, bundle: nil)
}
}