所以我有这个很好的子类,它可能会在某个时候调整大小,然后我调用 updateFrame() 将 lineWidth 更改为任何值都会导致崩溃。我需要的是能够在没有动画的情况下更改 lineWidth(立即)。
https://cdn1.imggmi.com/uploads/2019/1/24/a93765689e524d45116f942ce734275e-full.png
https://cdn1.imggmi.com/uploads/2019/1/24/12a880d41cff1f69ef6bd2f974033627-full.png
class OvalLayer: CAShapeLayer {
func updateFrame(_ with: CGRect) {
let newFrame = with.insetBy(dx: frame.size.width * 0.07, dy: frame.size.height * 0.07)
path = UIBezierPath(ovalIn: newFrame).cgPath
lineWidth = (min(frame.size.width, frame.size.height) / 50) //if i remove this line it will be ok
}
init(frame: CGRect) {
super.init()
self.frame = frame
let newFrame = frame.insetBy(dx: frame.size.width * 0.07, dy: frame.size.height * 0.07)
lineWidth = (min(frame.size.width, frame.size.height) / 50)
strokeColor = UIColor.white.cgColor
fillColor = UIColor.clear.cgColor
path = UIBezierPath(ovalIn: newFrame).cgPath
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}
最佳答案
是的,一分钟后我写了一个解决方案。我认为当您更新图层属性时,它会从自身重新初始化(只是我的猜测)
override init(layer: Any) {
super.init(layer: layer)
}
关于ios - CAShapeLayer 更改 lineWidth 导致崩溃,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/54353069/