Question

当我旋转设备时，我想加载一个与Storyboard完全不同的MasterView。

在AppDelegate中我有

func rotated() {

    if(UIDeviceOrientationIsLandscape(UIDevice.currentDevice().orientation)) {
        // Here I would like to load LandscapeViewController
    }

    if(UIDeviceOrientationIsPortrait(UIDevice.currentDevice().orientation)) {
        // or load PortraitViewController
    }

}

任何建议如何实现这一目标？

我知道有.loadView()，但我不认为这是正确的方法，或者我做错了什么......

Answer 1

您需要使用名为 viewWillTransitionToSize 的方法，因为在iOS 8中不推荐使用 didRotateFromInterfaceOrientation 。

最终代码看起来像这样：

 override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {

         if size.width > size.height {
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            var secondViewController = storyboard.instantiateViewControllerWithIdentifier("landscape") as? UIViewController

            if let newVC = secondViewController{
                //If you have a container add newVC as a childViewController, else present the view
                println("landscape")
            }


        }

         else if size.width < size.height{
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            var secondViewController = storyboard.instantiateViewControllerWithIdentifier("portrait") as? UIViewController

            if let newVC = secondViewController{
                //If you have a container add newVC as a childViewController, else present the view
                println("portrait")
            }
        }


}

Answer 2

您可以从故事板中实例化视图控制器。

如果你在一个UINavigationController中嵌入了PortraitViewController，那么你可以将LandscapeViewController推送到旋转状态吗？

var storyboard = UIStoryboard(name: "Main", bundle: nil)
var viewController: LandscapeViewControllerViewController = storyboard.instantiateViewControllerWithIdentifier("LandscapeViewControllerViewController") as LandscapeViewController

var rootViewController = self.window!.rootViewController as UINavigationController

if(UIDeviceOrientationIsLandscape(UIDevice.currentDevice().orientation)) {
   rootViewController.pushViewController(viewController, animated: true)
}

if(UIDeviceOrientationIsPortrait(UIDevice.currentDevice().orientation)) {
   rootViewController.popViewController()
}

在Swift中的事件之后加载另一个存在于Storyboard中的ViewController

2 个答案: