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ios - 动画期间 subview 堆叠

转载 作者:行者123 更新时间:2023-11-30 12:52:16 27 4
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我是 Swift 新手,并尝试在学习过程中编写一本交互式书籍。我使用 CATransform3DMakeRotation 创建了封面效果。

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正如您所看到的,当我堆叠 View 时,问题就出现了。如果我尝试添加后盖,则堆栈顺序会随着动画触发而丢失。

到目前为止我的代码:

let bookcontainerwidth = 400
let bookcontainerheight = 200
let bookcoverwidth = bookcontainerwidth/2
let bookcoverheight = bookcontainerheight

let flipspeed = 2.0

//container
let container = UIView(frame: CGRect(x: 0, y: 0, width: bookcontainerwidth, height: bookcontainerheight))
container.backgroundColor = UIColor.white

//back cover
let backcover = UIButton(frame: CGRect(x: bookcontainerwidth/2, y: 0, width: bookcoverwidth, height: bookcoverheight))
backcover.backgroundColor = UIColor.darkGray
backcover.setTitle("Back", for: UIControlState.normal)

//front cover
let frontcover = UIButton(frame: CGRect(x: bookcontainerwidth/2, y: 0, width: bookcoverwidth, height: bookcoverheight))
frontcover.backgroundColor = UIColor.gray
frontcover.addTarget(receiver, action: #selector(opencover), for: .touchUpInside)
frontcover.setTitle("Front", for: UIControlState.normal)
frontcover.layer.anchorPoint = CGPoint(x: 0.0, y: 0.5);
frontcover.center = CGPoint(x:bookcoverwidth, y: bookcoverheight/2);

container.addSubview(backcover)
container.addSubview(frontcover)


func opencover(){

UIView.animate(withDuration: flipspeed){ () -> Void in

//these do not work
//container.bringSubview(toFront: frontcover)
//container.sendSubview(toBack: backcover)

frontcover.layer.transform = CATransform3DMakeRotation(CGFloat(M_PI), 0.0, 1.0, 0.0);
}

}

接受任何和所有反馈。正如我所说,我是一个菜鸟。例如,我正在使用 UIButton,因为我希望封面可单击。不确定这是对还是错;)

谢谢!

最佳答案

找到了:

frontcover.layer.zPosition = 300.0;

完整说明位于Smooth horizontal flip using CATransform3DMakeRotation

关于ios - 动画期间 subview 堆叠,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/40813784/

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