animationbuttonAllowuserinteraction不起作用
我在一个NSObject类的代码中创build了一个UIbutton控制UIViewController类中的游戏。 该button在整个游戏大部分时间都可以正常工作，但是在某个时候，我希望button淡出/淡出。 一旦淡入淡出开始animationbutton不再是互动的。 我已经设置了.AllowUserInteraction选项，但仍然没有运气。 我被困在这一个，所以任何帮助非常感谢！
Class GameController: NSObject { var gameView: UIView! var nextButton: UIButton! func gameViewSetUp() { // create the nextButton let imageNextButton = UIImage(named: "rightArrow") as UIImage? self.nextButton = UIButton(type: .Custom) nextButton.frame = CGRectMake(ScreenWidth-100,ScreenHeight-250,60,60) nextButton.setTitle("", forState: UIControlState.Normal) nextButton.setImage(imageNextButton, forState: .Normal) nextButton.contentMode = .ScaleAspectFill nextButton.backgroundColor = UIColor.clearColor() nextButton.layer.cornerRadius = 5.0 nextButton.layer.borderWidth = 2.5 nextButton.layer.borderColor = UIColor.clearColor().CGColor nextButton.addTarget(self, action: "nextPressed", forControlEvents: .TouchUpInside) nextButton.userInteractionEnabled = true gameView.addSubview(nextButton) func playStageX() { nextButtonWink() } } func nextButtonWink() { UIView.animateWithDuration(1.5, delay: 0, options: [.AllowUserInteraction, .Repeat, .CurveEaseInOut, .Autoreverse], animations: { // self.nextButton.userInteractionEnabled = true // I tried this as well but no impact. self.nextButton.alpha = 0 }, completion: nil) } class GameViewController: UIViewController { private var controller: GameController required init?(coder aDecoder: NSCoder) { controller = GameController() super.init(coder: aDecoder) } override func viewDidLoad() { super.viewDidLoad() let gameView = UIView(frame: CGRectMake(0, 0, ScreenWidth, ScreenHeight)) self.view.addSubview(gameView) controller.gameView = gameView }
拿出self.nextButton.alpha = 0来testing这一点，我相信，button事件不会触发时，alpha为零。 当涉及到animation时，animation开始之前，实际的对象的alpha将被设置为零，而你所看到的就像是一个渲染的视图的交互式截图，因为它的animation
如果是这样的话，那么你需要将alpha设置为0.0100000003之类的值，或者覆盖button在alpha 0处进行交互
Swift 3 Xcode 8：
AllowUserAction现在被弃用allowUserAction ….去图
func nextButtonWink() { UIView.animateWithDuration(1.5, delay: 0, options: [.allowUserInteraction, animations: {