JHDraw draw line, draw dash line, draw star, draw rect, draw dash rect, gradientLayer 画线,画虚线,画五角星,画矩形,画虚线矩形,渐变色 What iOS 12: Logs 2019-04-23 1.gradientLayer in iOS 12. 2019-04-22 1.gradientLayer. 2018-12-12 1.upload.