Swift中的UIView动画不起作用，错误的参数错误 [英] UIView Animation in Swift not working, wrong arguments error

问题描述

我正在尝试制作动画并使用以下代码。我得到无法使用类型'的参数列表调用'animateWithDuration'（FloatLiteralConvertible，delay：FloatLiteralConvertible，options：UIViewAnimationOptions，animations :(） - >（） - > $ T4，completion：（Bool） - >（Bool） - > $ T5）'错误。

I'm trying to do an animation and used the below code. I'm getting "Cannot invoke 'animateWithDuration' with an argument list of type '(FloatLiteralConvertible, delay: FloatLiteralConvertible, options: UIViewAnimationOptions, animations: () -> () -> $T4, completion: (Bool) -> (Bool) -> $T5)'" Error.

这意味着我使用了错误的参数。我错了。请帮忙。我无法真正解决它。

This means I'm using wrong arguments. I could be wrong. Please help in this. I couldn't really resolve it.

var basketTopFrame = CGRect()
basketTopFrame = dropPlace.frame
var mytimer : NSTimer = NSTimer .scheduledTimerWithTimeInterval(2.0, target: self, selector: "restart", userInfo: nil, repeats: false)

UIView.animateWithDuration(1.0, delay: 0.1, options: UIViewAnimationOptions.CurveEaseIn , animations: {  var pickPlace = basketTopFrame }, completion:  {(finished: Bool) in mytimer })

提前致谢。

推荐答案

如果只有一个语句，则闭包会自动返回。因为在你的情况下它返回 NSTimer 而不是 Void 。您提供的闭包与签名闭包不匹配。例如，您必须在 myTimer 上调用方法来解决此问题：

Closures have auto return if there is only one statement. Due to that in your case it is returning NSTimer and not Void. Your provided closure doesn't match signature closure. You have to call method on myTimer, for example, to fix this issue:

UIView.animateWithDuration(1.0, delay: 0.1, options: UIViewAnimationOptions.CurveEaseIn,
    animations: {
        var pickPlace = basketTopFrame
    },
    completion:  { (finished: Bool) in
        mytimer.fire()
    }
)

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