facebook - swift NSValue.valueWithCGRect

Question

我正在尝试使用 Facebook pop POPSpringAnimation 为 UIButton 的边界设置动画，但我找不到我应该在 swift 中使用什么来替换 NSValue.valueWithCGRect

这就是我想要做的:

@IBAction func buttonTapped(sender : UIButton) {

    var springAnimation = POPSpringAnimation()
    springAnimation.property = POPAnimatableProperty.propertyWithName(kPOPLayerBounds) as POPAnimatableProperty
    springAnimation.springBounciness = 12.0
    springAnimation.springSpeed = 10.0

    springAnimation.toValue = NSValue.valueWithCGRect(newBounds)

    shutterButton.pop_addAnimation(springAnimation, forKey: "size")

}

Answer 1

这将编译:

let rect = CGRect(x: 0,y: 0,width: 1,height: 1)
let val = NSValue(CGRect: rect)

这是“初始化语法”