相关疑难解决方法(0)

我搜索了从图片文件中获取EXIF数据并将其写回Swift.但我只能找到不同语言的预定义库.

我还发现了对"CFDictionaryGetValue"的引用,但是我需要哪些密钥来获取数据？我该怎么写回来？

我使用UIImagePickerController在我的iOS应用程序中选择图像,我知道可以通过info [UIImagePickerControllerMediaMetadata]获取exif信息.但是当我通过UIImage将我的图像上传到我的服务器时,大多数exif信息都是条带化的.我想知道是否可以在Http请求中将exif信息添加到我的图像中(之后上传为jpg的图像).如果没有,我该如何解决这个问题？我想改变Make,Model属性(换句话说,用什么设备来拍这张照片)

以下是我的代码片段:

func Tapped() {
    let myPickerController = UIImagePickerController()

    myPickerController.delegate = self
    myPickerController.sourceType = UIImagePickerControllerSourceType.Camera
    myPickerController.allowsEditing = false
    self.presentViewController(myPickerController, animated: true, completion: nil)
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    let image = info[UIImagePickerControllerOriginalImage] as? UIImage
    myImageView.image = image
    UIImageWriteToSavedPhotosAlbum(image!, self, #selector(ViewController.image(_:didFinishSavingWithError:contextInfo:)), nil)
    self.dismissViewControllerAnimated(true, completion: nil)
}

func myImageUploadRequest()
{

    let myUrl = NSURL(string: "http://XXXXXX/Uploadfile")

    let request = NSMutableURLRequest(URL:myUrl!)
    request.HTTPMethod = "POST"

    let param = [
        "userId"    : "7"
    ]

    let boundary = generateBoundaryString()

    request.setValue("multipart/form-data; boundary=\(boundary)", …

我有一幅带有大量exif信息的图像。但是，当尝试快速读取exif信息时，它显示的exif信息数量有限。

我尝试了以下代码：

let data = UIImageJPEGRepresentation(image, 1.0)
let source = CGImageSourceCreateWithData(data! as CFData, nil)
let metadata = (CGImageSourceCopyPropertiesAtIndex(source!, 0, nil))
debugPrint(metadata ?? "nil")

并显示以下结果：

    {
    ColorModel = RGB;
    Depth = 8;
    Orientation = 6;
    PixelHeight = 2448;
    PixelWidth = 3264;
    ProfileName = "sRGB IEC61966-2.1";
    "{Exif}" =     {
        ColorSpace = 1;
        PixelXDimension = 3264;
        PixelYDimension = 2448;
    };
    "{JFIF}" =     {
        DensityUnit = 0;
        JFIFVersion =         (
            1,
            0,
            1
        );
        XDensity = 72;
        YDensity = 72;
    };
    "{TIFF}" …