iOS Xamarin: Attach Photo to Email Body - ios

Question

I am building an app, that allows user to take a picture, extract meta data and attach photo to Email + meta data information.
However the issue is that If you capture a photo from camera, the event does not return a ReferenceUrl, atleast I dont see one. I do get some form of URL but that doesn't work as intended. Here is my code:-
// Take a photo with the Camera //
partial void BtnCamera_TouchUpInside(UIButton sender)
{
UIImagePickerController imagePicker = new UIImagePickerController();
imagePicker.PrefersStatusBarHidden();
imagePicker.SourceType = UIImagePickerControllerSourceType.Camera;
// handle saving picture and extracting meta-data from picture //
imagePicker.FinishedPickingMedia += Handle_FinishedPickingMedia;
// present //
PresentViewController(imagePicker, true, () => { });
}
To save the image I call the SaveImageToPhone() from my FinishedPickingMedia handler. It looks like this:-
private static void SaveImagetoPhone(UIImagePickerMediaPickedEventArgs e)
{
NSUrl url = null;
void ImageData(PHAsset asset)
{
if (asset == null)
throw new Exception("PHAsset is null");
//PHImageManager.DefaultManager.RequestImageData(asset, null, (data, dataUti, orientation, info) =>
// {
// var urlX = info.ValueForKey(new NSString("PHImageFileURLKey"));
// url = info.ValueForKey(new NSString("PHImageFileURLKey")) as NSUrl;
// DataClass._fileURL = urlX.ToString();
// });
}
PHAsset phAsset;
if (e.ReferenceUrl == null)
{
e.OriginalImage?.SaveToPhotosAlbum((image, error) =>
{
if (error == null)
{
var options = new PHFetchOptions
{
FetchLimit = 1,
SortDescriptors = new[] { new NSSortDescriptor("creationDate", true) }
};
phAsset = PHAsset.FetchAssets(options).LastOrDefault() as PHAsset;
ImageData(phAsset);
}
});
}
else
{
phAsset = PHAsset.FetchAssets(new[] { e.ReferenceUrl }, null).FirstOrDefault() as PHAsset;
ImageData(phAsset);
}
}
In this function I have a couple of lines commented out, it is here where I was trying to get the reference URL for the Photo (unsuccessfully).
And finally my email () looks like this:-
partial void BtnMessageDone_TouchUpInside(UIButton sender)
{
MFMailComposeViewController mailController;
if (MFMailComposeViewController.CanSendMail)
{
StringBuilder htmlBodyMail = FormatEmailBody();
mailController = new MFMailComposeViewController();
// do mail operations here
mailController.SetToRecipients(new string[] { "xxyyzz#...com" });
mailController.SetSubject("mail test");
mailController.SetMessageBody(htmlBodyMail.ToString(), false);
UIImage img = UIImage.FromFile(DataClass._fileURL);
mailController.AddAttachmentData(img.AsJPEG(), "image/JPG", "Image.JPG");
mailController.Finished += (object s, MFComposeResultEventArgs args) =>
{
Console.WriteLine(args.Result.ToString());
args.Controller.DismissViewController(true, null);
};
this.PresentViewController(mailController, true, null);
}
Does anyone have any pointers on how to get the absolute path/reference URL of the photo taken by the in app camera and attach it to the email body ?

Answer 1

Use the Path property on the NSUrl class:
NSString urlString = new NSString("file:///stack/over%20flow/foobar.txt");
NSUrl myFileUrl = new NSUrl (urlString);
Console.WriteLine (myFileUrl.AbsoluteString);
string absPath = myFileUrl.Path;
Console.WriteLine (absPath);