//设置图片框为圆角
ImgView.layer.cornerRadius = 7;
ImgView.layer.masksToBounds = YES;
//设置图片框为圆角
ImgView.layer.cornerRadius = 7;
ImgView.layer.masksToBounds = YES;
//设置图片框为圆角
ImgView.layer.cornerRadius = 7;
ImgView.layer.masksToBounds = YES;
原文：http://www.cnblogs.com/ZMiOS/p/5003729.html