SnapKit 动画

 

1. 控制器中viewDidLoad使用 要在主线程

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///更新动画 DispatchQueue.main.async {     UIView.animate(withDuration: 0.5) {[weak self] in         self?.centerIV.snp.updateConstraints { (make) in             make.top.equalTo(TGSNavBarHeight + 5)             make.width.equalTo(TGSScaleWidth(value: 202))             make.height.equalTo(TGSScaleWidth(value: 25))         }                   self?.loginView.snp.updateConstraints({ (make) in             make.top.equalTo(loginViewY)         })        ///核心代码         self?.view.layoutIfNeeded()     } }

　　

2. 其他地方 不需要主线程也能实现自定义点击事件， 自定义view

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/// 点击事件 private func clickEvent(){     loginView.clickHandle = {[weak self] (clickType) in         switch clickType {         case .close:             if let strongSelf = self{                 UIView.animate(withDuration: 0.5) {                     strongSelf.centerIV.snp.updateConstraints { (make) in                         make.top.equalToSuperview().offset(TGSScreenHeight*0.5)                         make.width.equalTo(TGSScaleWidth(value: 270))                         make.height.equalTo(TGSScaleWidth(value: 33))                     }                     strongSelf.loginView.snp.updateConstraints { (make) in                         make.top.equalTo(TGSScreenHeight)                     }                     strongSelf.view.layoutIfNeeded()                 } completion: { (_) in                     strongSelf.navigationController?.popViewController(animated: true)                 }             }         case .clickCodeBtn(let phoneNum):             TGSLOG(message: "phoneNum = \(phoneNum)")             ///开始请求 -》 请求成功 启动定时器/弹框             self?.loginView.startCountdown()                       default:break         }     } }