ios - 如何为 UITableViewCell 实现摇动动画

Question

如何让一个UITableViewCell从左边摇到右边？

我想让用户知道“这个 Action 是不可能的”!

Answer 1

谢谢汉斯!这里是 Swift 和 UITableViewCell 的扩展形式，持续时间和路径长度可选。

import UIKit
import QuartzCore

extension UITableViewCell {
    func shake(duration: CFTimeInterval = 0.3, pathLength: CGFloat = 15) {
        let position: CGPoint = self.center

        let path: UIBezierPath = UIBezierPath()
        path.moveToPoint(CGPointMake(position.x, position.y))
        path.addLineToPoint(CGPointMake(position.x-pathLength, position.y))
        path.addLineToPoint(CGPointMake(position.x+pathLength, position.y))
        path.addLineToPoint(CGPointMake(position.x-pathLength, position.y))
        path.addLineToPoint(CGPointMake(position.x+pathLength, position.y))
        path.addLineToPoint(CGPointMake(position.x, position.y))

        let positionAnimation = CAKeyframeAnimation(keyPath: "position")

        positionAnimation.path = path.CGPath
        positionAnimation.duration = duration
        positionAnimation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionLinear)

        CATransaction.begin()
        self.layer.addAnimation(positionAnimation, forKey: nil)
        CATransaction.commit()
    }
}