前提：设计师给了一个静态图，图片放到UIButton上了，现在的需求是图片能够左右晃动。swift代码如下
swift
效果如下：
晃动效果
代码如下：
private lazy var buttonView : UIView = {
let buttonV = UIView()
buttonV.frame = CGRect(x: FMScreenWidth - 80, y: FMScreenHeight-navigationBarHeight-tabBarHeight-100, width: 70, height: 70)
buttonV.backgroundColor = UIColor.clear
return buttonV
}()
//View晃动效果方法
func shakeAnimation(){
//移除self.mineTopView.layer上的所有动画，可以避免多次重复添加
self.buttonView.layer.removeAllAnimations()
let momAnimation = CABasicAnimation(keyPath: "transform.rotation.z")
momAnimation.fromValue = NSNumber(value: -0.2) //左幅度
momAnimation.toValue = NSNumber(value: 0.2) //右幅度
momAnimation.duration = 0.2
momAnimation.repeatCount = HUGE //无限重复
momAnimation.autoreverses = true //动画结束时执行逆动画
momAnimation.isRemovedOnCompletion = false //切出此界面再回来动画不会停止
momAnimation.delegate = self//CAAnimationDelegate 代理中有动画的开始和结束
self.buttonView.layer.add(momAnimation, forKey: "centerLayer")
}
//MARK:悬浮按钮
private lazy var suspensionButton : UIButton = {
let button = UIButton(type: UIButton.ButtonType.custom)
button.setImage(UIImage(named: "RedEnvelopes"), for: .normal)
button.frame = CGRect(x: 0, y: 0, width: 70, height: 70)
button.adjustsImageWhenHighlighted = false
button.adjustsImageWhenDisabled = false
button.addTarget(self, action: #selector(self.buttonAction), for: UIControl.Event.touchUpInside)
return button
}()
//悬浮按钮点击事件
@objc func buttonAction(){
print("点击了")
let urlString = NetworkManager().linkPamrms(path: PostPath.homeShareBtn.path, params:"")
let webView = FMBaseWebController()
webView.webViewUrl = urlString
webView.isNeedHidden = true
webView.yaoYingYouLi = true
webView.isHiddenNavigation = false
navigationController?.pushViewController(webView, animated: true)
}
