?fun csetView() ->UIView{
? ? ? ? let view =UIView()
? ? ? ? let? path:UIBezierPath=UIBezierPath.init(roundedRect: view.bounds, byRoundingCorners: [.topLeft,.topRight], cornerRadii:CGSize(width:12, height:0))
? ? ? ? let shapLayer:CAShapeLayer = CAShapeLayer()
? ? ? ? shapLayer.lineWidth=1
? ? ? ? shapLayer.strokeColor = UIColor.white.cgColor
? ? ? ? shapLayer.fillColor = UIColor.clear.cgColor
? ? ? ? shapLayer.path? = path.cgPath
? ? ? ? let maskLayer:CAShapeLayer = CAShapeLayer.init()
? ? ? ? maskLayer.path= path.cgPath
? ? ? ? view.layer.mask= maskLayer
? ? ? ? view.layer.addSublayer(shapLayer)
? ? ? ? return view
? ? }
