Ich benutze UIImagePickerController, um Bilder in meiner iOS App auszuwählen, und ich weiß exif Informationen können durch Info [UIImagePickerControllerMediaMetadata] erhalten werden. Aber wenn ich mein Image von UIImage auf meinen Server hochlade, wurden die meisten Exif-Informationen gestreift. Ich frage mich, ob ich exif Informationen zu meinem Bild in Http Anfrage hinzufügen kann (Bild als jpg danach hochgeladen). Wenn nicht, wie soll ich dieses Problem lösen? Ich will Änderung vornehmen, Modell-Attribute (in anderen Worten, was Gerät wurde verwendet, um dieses Bild zu machen)Swift, wie Exif Informationen in Bildern aus der mobilen Kamera geändert werden
Hier sind meine Code-Schnipsel:
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)", forHTTPHeaderField: "Content-Type")
let imageData = UIImageJPEGRepresentation(myImageView.image!, 1)
if(imageData == nil) { return; }
request.HTTPBody = createBodyWithParameters(param, filePathKey: "file", imageDataKey: imageData!, boundary: boundary)
myActivityIndicator.startAnimating()
let task = NSURLSession.sharedSession().dataTaskWithRequest(request) {
data, response, error in
if error != nil {
print("error=\(error)")
return
}
// You can print out response object
print("******* response = \(response)")
// Print out response body
let responseString = NSString(data: data!, encoding: NSUTF8StringEncoding)
print("****** response data = \(responseString!)")
do{
let json = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSDictionary
}catch{
print(error)
}
dispatch_async(dispatch_get_main_queue(),{
self.myActivityIndicator.stopAnimating()
self.myImageView.image = nil
})
}
task.resume()
}
func createBodyWithParameters(parameters: [String: String]?, filePathKey: String?, imageDataKey: NSData, boundary: String) -> NSData {
let body = NSMutableData();
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
let filename = "test.jpg"
let mimetype = "image/jpg"
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(filePathKey!)\"; filename=\"\(filename)\"\r\n")
body.appendString("Content-Type: \(mimetype)\r\n\r\n")
body.appendData(imageDataKey)
body.appendString("\r\n")
body.appendString("--\(boundary)--\r\n")
return body
}
func generateBoundaryString() -> String {
return "Boundary-\(NSUUID().UUIDString)"
}
extension NSMutableData {
func appendString(string: String) {
let data = string.dataUsingEncoding(NSUTF8StringEncoding, allowLossyConversion: true)
appendData(data!)
}
}
Irgendwelche Updates zu diesem Thema? Ich kann auch keine einfache Methode finden, dies zu tun. – jonmecer