ios - Swift UIView.animateWithDuration 在加载内容时消失

Question

我使用一个简单的动画来向下滑动一个小 View (该 View 包含一些标签和 imageView)。动画有效，但是当我尝试设置标签和 imageView 的内容时， View 消失。

有什么帮助吗？

UIView.animateWithDuration(1, delay: 0,
                usingSpringWithDamping: springDamping,
                initialSpringVelocity: velocity, options: option!, animations: {
                    self.sliderUserInfo.frame.origin = self.sliderUserInfoPosition
                }, completion: {finished  in
                    if finished {
                        self.loadContentView()
                    }
            })

Answer 1

将代码修改为:

    var newFrame = self.sliderUserInfo.frame
    newFrame.origin = self.sliderUserInfoPosition
    UIView.animateWithDuration(1, delay: 0,
        usingSpringWithDamping: springDamping,
        initialSpringVelocity: velocity, options: option!, animations: {
            self.sliderUserInfo.frame = newFrame
        }, completion: {finished  in
            if finished {
                self.loadContentView()
            }
    })