Question

我使用故事板并拥有以下风险投资：

UISplitViewController (Master) > UITabbarController > UINavigationController > UITableViewController

UISplitViewController (Detail) > UINavigationController > UIViewController

我想在启动时显示登录屏幕。

我添加了以下内容：

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    window?.rootViewController = self.window!.rootViewController as! UISplitViewController
    window?.makeKeyAndVisible()

    if isAuthorized() == false {
        let loginVc = UIStoryboard("Main", bundle: nil).instantiateViewControllerWithIdentifier("Loginn") as! LoginVC
        loginVc.modalTransitionStyle = .CrossDissolve
        loginVc.modalPresentationStyle = .PageSheet
        svc.presentViewController(loginVc, animated: true, completion: nil)
    }

    return true
}

虽然iPad工作正常，但iPhone会在控制台中显示消息：

对开始/结束外观转换的不平衡调用＆LT;的Myproj。 SplitViewController：0x7fa4c9525470＆gt;

我应该如何呈现登录控制器以使该警告静音？

Answer 1

为什么不把显示登录视图控制器的代码放在mainviewcontroller的viewdidappear中？

override func viewDidAppear(animated: Bool)
{
    super.viewDidAppear(true)

    let loginVc = UIStoryboard("Main", bundle: nil).instantiateViewControllerWithIdentifier("Loginn") as! LoginVC
    loginVc.modalTransitionStyle = .CrossDissolve
    loginVc.modalPresentationStyle = .PageSheet
    svc.presentViewController(loginVc, animated: true, completion: nil)
}

通过故事板和自适应segue对开始/结束外观转换的不平衡调用

1 个答案: