SDWebImage

        let image = UIImageView()
        image.sd_setImageWithURL(NSURL(string:"http://qiniu.test.huiyunche.cn/banner1.jpg?e=1471421220&token=wQknukoe-lwcjLKEnsBz-BrL61M1BEMP0Gq_M2qP:xuEn3mgXqoXDsLf-rFgLs8v2xkk=")!,placeholderImage :nil)
        image.frame = CGRectMake(100, 350, 200, 200)
        self.view.addSubview(image)
        

原文地址:https://www.cnblogs.com/sayimba/p/5779848.html