SnapKit 动画

 

1. 控制器中viewDidLoad使用 要在主线程

        ///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

    /// 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
            }
        }
    }