从UIImage转换到NSData类型 博客分类: IOS UIImage2NSDataNSDataUIImageJPEGRepresentationUIImagePNGRepresentation
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2024-02-04 17:03:22
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//sdk中提供了方法可以直接调用 UIImage *img = [UIImage imageNamed:@"some.png"]; NSData *dataObj = UIImageJPEGRepresentation(img, 1.0); //下面是sdk中UIImage.h头文件中的内容 UIKIT_EXTERN NSData *UIImagePNGRepresentation(UIImage *image); // return image as PNG. May return nil if image has no CGImageRef or invalid bitmap format UIKIT_EXTERN NSData *UIImageJPEGRepresentation(UIImage *image, CGFloat compressionQuality); // return image as JPEG. May return nil if image has no CGImageRef or invalid bitmap format. compression is 0(most)..1(least)