有没有办法在该对象的动画期间获取 UIImageView 位置?

Ale*_*ley 1 xcode frame uiimageview ios swift

我有一个函数可以动画 UIImageView 从一组坐标到屏幕另一侧的另一组坐标的移动。在动画期间,我想记录我点击图像时的位置。当我拨打这样的电话时,我得到的不是当前位置:

var rippleImage = UIImageView()

//example animation block
UIView.animate(withDuration: 6, delay: 0.0, options: [.curveLinear, .allowUserInteraction], animations: {
        self.rippleImage.frame = CGRect(x: (xaxis - 500) , y: (yaxis - 500) , width: (self.rippleImage.frame.width + 1000), height: (self.rippleImage.frame.height + 1000))
        self.rippleImage.alpha = 0.1
    }, completion: nil )

//sample button click function to capture location
@objc func pianoKeyButtonTapped(sender: UIImageView) -> [String] {

    // get and animate current ripple
    let currentRippleLocation = self.rippleImage.frame
    print(currentRippleLocation)
}
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在每种情况下,我都会得到相同的目的地位置,如下所示:

(-342.5, 67.0, 1060.0, 1060.0)
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Emp*_*ess 6

/sf/answers/533773481/转换为 Swift 3 代码:

PresentationLayer - CALayer 的一个属性,它“提供与当前正在显示的图层版本的近似值”

let currentRippleLocation = rippleImage.layer.presentation().frame
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