IOS 从相册里拿到照片的格式转换

太过爱你忘了你带给我的痛 2024-04-17 16:39 9阅读 0赞

iPhone手机有一些实况图，全景图等，如果直接去文件后缀，安卓或者web是不支持的，我们的需求就是把这些格式全部都转成任何的格式，JPEG就可以，简单的来写，就是如下代码：

import MobileCoreServices
    
        public func getOriginalPhotoData(_ asset: PHAsset?, completion: @escaping (_ data: Data?, _ info: [AnyHashable: Any]?, _ isDegraded: Bool?) -> (Swift.Void)) {
    
            let option = PHImageRequestOptions()
            option.deliveryMode = .highQualityFormat
            option.isSynchronous = true
            option.isNetworkAccessAllowed = true
            let fileName: String? = asset!.value(forKeyPath: "filename") as? String
            if let fileName = fileName, fileName.hasSuffix("GIF") {
                option.version = .original
            }
    
            PHImageManager.default().requestImageData(for: asset!, options: option) { (imageData, dataUTI, _/*orientation*/, info) in
    
                guard let dataUTI = dataUTI else { return }
    
                if UTTypeConformsTo(dataUTI as CFString, kUTTypeGIF) {
    
                    completion(imageData, info, false)
    
                } else if !(UTTypeConformsTo(dataUTI as CFString, kUTTypeJPEG) || UTTypeConformsTo(dataUTI as CFString, kUTTypePNG)) {
    
                    // imageData is neither JPG not PNG, possibly subject for transcoding
                    completion(UIImage.init(data: imageData ?? Data())?.jpegData(compressionQuality: 1), info, true)
    
                } else {
    
                    completion(imageData, info, false)
    
                }
            }
        }

根据自己的需求，拿到 dataUTI 的格式去做转换就可以了，我们要求GIF不能转为静态图，所以我保留了GIF，PNG，JPEG三种格式