我正在尝试编写一个单一的窗口计时器应用程序,当用户按下开始按钮时,我希望它显示具有倒数的另一个视图控制器等。我也在Xcode中使用故事板,在这里我有一个segue可以连接开始按钮和第二个视图控制器。但是,只有三种不同的样式,即模式样式,工作表样式和弹出样式。我想将第一个视图控制器替换为窗口中的第二个视图控制器。我找不到办法。我尝试为segue使用自定义样式,在该样式中使用presentViewController:animator:方法,但是我无法弄清楚要发送的内容作为animator:的参数。
从一个视图控制器在一个窗口中切换到另一个视图控制器,反之亦然的最简单/正确的方法是什么?
同样在情节提要中,当我选择一个视图控制器时,它会显示一个名为“ Presentation”的属性,该属性可以是多个和单个,这些代表什么?
我认为,最简单的方法就是交换contentViewController的NSWindow。
contentViewController
NSWindow
// in NSViewController's subclass @IBAction func someAction(sender: AnyObject) { let nextViewController = ... // instantiate from storyboard or elsewhere if let window = view.window where window.styleMask & NSFullScreenWindowMask > 0 { // adjust view size to current window nextViewController.view.frame = CGRectMake(0, 0, window.frame.width, window.frame.height) } view.window?.contentViewController = nextViewController }
这是选项1。
如果要使用segue,请创建自定义选项,并将其设置为IB中带有标识符的segue类。
class ReplaceSegue: NSStoryboardSegue { override func perform() { if let fromViewController = sourceController as? NSViewController { if let toViewController = destinationController as? NSViewController { // no animation. fromViewController.view.window?.contentViewController = toViewController } } } }
这是选项2。
最后一个选项是使用presentViewController:animator:的NSViewController。以下代码是NSViewControllerPresentationAnimator用于溶解动画的自定义代码。
presentViewController:animator:
NSViewController
NSViewControllerPresentationAnimator
class ReplacePresentationAnimator: NSObject, NSViewControllerPresentationAnimator { func animatePresentationOfViewController(viewController: NSViewController, fromViewController: NSViewController) { if let window = fromViewController.view.window { NSAnimationContext.runAnimationGroup({ (context) -> Void in fromViewController.view.animator().alphaValue = 0 }, completionHandler: { () -> Void in viewController.view.alphaValue = 0 window.contentViewController = viewController viewController.view.animator().alphaValue = 1.0 }) } } func animateDismissalOfViewController(viewController: NSViewController, fromViewController: NSViewController) { if let window = viewController.view.window { NSAnimationContext.runAnimationGroup({ (context) -> Void in viewController.view.animator().alphaValue = 0 }, completionHandler: { () -> Void in fromViewController.view.alphaValue = 0 window.contentViewController = fromViewController fromViewController.view.animator().alphaValue = 1.0 }) } } }
然后像这样呈现VC。
@IBAction func replaceAction(sender: AnyObject) { let nextViewController = ... // instantiate from storyboard or elsewhere presentViewController(nextViewController, animator: ReplacePresentationAnimator()) }
对于解雇,呼叫presentingViewController的dismissViewController:所呈现的VC。
presentingViewController
dismissViewController:
@IBAction func dismissAction(sender: AnyObject) { presentingViewController?.dismissViewController(self) }
Swift4版本
class ReplacePresentationAnimator: NSObject, NSViewControllerPresentationAnimator { func animatePresentation(of viewController: NSViewController, from fromViewController: NSViewController) { if let window = fromViewController.view.window { NSAnimationContext.runAnimationGroup({ (context) -> Void in fromViewController.view.animator().alphaValue = 0 }, completionHandler: { () -> Void in viewController.view.alphaValue = 0 window.contentViewController = viewController viewController.view.animator().alphaValue = 1.0 }) } } func animateDismissal(of viewController: NSViewController, from fromViewController: NSViewController) { if let window = viewController.view.window { NSAnimationContext.runAnimationGroup({ (context) -> Void in viewController.view.animator().alphaValue = 0 }, completionHandler: { () -> Void in fromViewController.view.alphaValue = 0 window.contentViewController = fromViewController fromViewController.view.animator().alphaValue = 1.0 }) } }
}
希望能有所帮助。