使用相机模式拍摄图像时出错

Question

I'm working on image picker with camera and gallery and using following code to get image captured from camera but imageurl and image name is nil.I'm testing on mobile with os version of 11.2.2.

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {

    let image = info[UIImagePickerControllerOriginalImage] as! UIImage
    let imageUrl          = info[UIImagePickerControllerReferenceURL] as? NSURL
    let imageName         = imageUrl?.lastPathComponent
    let documentDirectory = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true).first!
    let photoURL          = NSURL(fileURLWithPath: documentDirectory)
    let localPath         = photoURL.appendingPathComponent(imageName!)

    if !FileManager.default.fileExists(atPath: localPath!.path) {
        do {
            try UIImageJPEGRepresentation(image, 1.0)?.write(to: localPath!)
            print("file saved")
        }catch {
            print("error saving file")
        }
    }
    else {
        print("file already exists")
    }
}

Answer 1

像这样使用UIImagePickerControllerImageURL代替UIImagePickerControllerReferenceURL ：

let imageUrl = info[UIImagePickerControllerImageURL] as? NSURL

Answer 2

You will not get any imageUrl or imageName because you are using the camera mode and that image is still not saved in your gallery and hence no image path is created for that camera clicked pic. So they will be nil. You can only get the UIImage object info[UIImagePickerControllerOriginalImage] in this case.

If you pick the image from photo album , then you will get everyhting. You can get the url by info[UIImagePickerControllerImageURL] and you can grab the name using the last path component.

Change your imagePickerController source to photo imagePickerController.sourceType = .photoLibrary and then you will get the urls.