lazy var titleImg: UIImageView = {
let imgView = UIImageView ()
imgView.image = UIImage.init(named: "x")
imgView.backgroundColor = UIColor.yellow
imgView.isUserInteractionEnabled = true
let tap = UITapGestureRecognizer(target: self, action:#selector(clickImg))
imgView.addGestureRecognizer(tap)
return imgView
}()
titleImg.snp.makeConstraints { (make) -> Void in
make.width.equalTo(50)
make.height.equalTo(50)
}
@objc func clickImg(_ sender:UITapGestureRecognizer)
{
}
#调用
tbvHeadView.imvHead?.kf.setImage(with: ImageResource(downloadURL: userModel.image.mj_url), placeholder: kDefaultImage(), options: nil, progressBlock: nil, completionHandler: nil)
图片适应
//图片自适应，ImageView会有部分空白
imgView.contentMode = .scaleAspectFit
//去图片中间部分，图片太大的情况
imgView.contentMode = .scaleAspectFill
imgView.clipsToBounds = true
//图片不会保持原来的比例
imgView.contentMode = .scaleToFill
image.png
保存图片到沙盒
方便查看UIImage 的大小
//打印工程所在文件路径
print(NSHomeDirectory())
//获取本地缓存文件路径
let cachPath = NSSearchPathForDirectoriesInDomains(.cachesDirectory, .userDomainMask, true)
//设置保存路径
let path = cachPath[0] + "/img.png"
//将图片转换为png图片数据
//let imgData = UIImagePNGRepresentation(img!)
do {
//写入到指定路径
try data222?.write(to: URL(fileURLWithPath: path))
}
catch{
}
ImageView 基础
https://www.jianshu.com/p/0ae8c8fe0dc6
iOS-图片拉伸，气泡
https://www.jianshu.com/p/eedac57a11aa
iOS-图片裁剪
https://github.com/Yasic/DynamicClipImage
https://www.jianshu.com/p/0ddf4f7476aa
https://www.jianshu.com/p/d9ca82c1834c
https://github.com/Rogue24/JPImageresizerView
图片压缩到指定大小 200k 以下
图片分类 旋转，截取。。。。
