Save UIImage as jpg File in Photo Library Directory in Xamarin.iOS - file

Question

As I know this is Simple Approch to save it in a Photo Library. But It can save with custom filename.
var someImage = UIImage.FromFile("someImage.jpg");
someImage.SaveToPhotosAlbum((image, error) => {
var o = image as UIImage;
Console.WriteLine("error:" + error);
})
But I want to save it with filename.jpg in the Photo Library.
I try so much code but nothing is getting help to me.
Code 1 :
var imageName = "/" + dicomId.ToString() + ".jpg";
var documentsDirectory = Environment.GetFolderPath
(Environment.SpecialFolder.Personal);
string jpgFilename = System.IO.Path.Combine(documentsDirectory, imageName); // hardcoded filename, overwritten each time
NSData imgData = dicomImage.AsJPEG();
NSError err = null;
if (imgData.Save(jpgFilename, false, out err))
{
Console.WriteLine("saved as " + jpgFilename);
}
else
{
Console.WriteLine("NOT saved as " + jpgFilename + " because" + err.LocalizedDescription);
}
This code part goes to if condition but it can not save the Image.
Code 2 :
If using this part of Code
var documentsDirectoryPath = NSSearchPath.GetDirectories(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomain.User, true)[0];
It give you don't have permission to save image.
I try lots of thing on google and SO but nothing could help to me.
Edit :
info.plist
Any Help would be Appreciated.

Answer 1

How about using UIImage.SaveToPhotosAlbum()?
Usage is something like:
image.SaveToPhotosAlbum((uiImage, nsError) =>
{
if (nsError != null)
// do something about the error..
else
// image should be saved
});
Make sure that you have requested permissions before you try to save.
PHPhotoLibrary.RequestAuthorization(status =>
{
switch (status)
{
case PHAuthorizationStatus.Restricted:
case PHAuthorizationStatus.Denied:
// nope you don't have permission
break;
case PHAuthorizationStatus.Authorized:
// yep it is ok to save
break;
}
});
Edit: if you want more control, you need to use PHPhotosLibrary, which is an awful API...
var library = PHPhotoLibrary.SharedPhotoLibrary;
var albumName = "MyPhotos";
var fetchOptions = new PHFetchOptions();
fetchOptions.Predicate = NSPredicate.FromFormat($"title = {albumName}");
var assetsCollections = PHAssetCollection.FetchAssetCollections(
PHAssetCollectionType.Album, PHAssetCollectionSubtype.Any, fetchOptions);
var collection = assetsCollections.firstObject as PHAssetCollection;
library.PerformChanges(() => {
var options = new PHAssetResourceCreationOptions();
options.OriginalFilename = "filename.jpg";
var createRequest = PHAssetCreationRequest.CreationRequestForAsset();
createRequest.AddResource(PHAssetResourceType.FullSizePhoto, image.AsJPEG(1), options);
// if you want to save to specific album... otherwise just remove these three lines
var placeholder = createRequest.PlaceholderForCreatedAsset;
var albumChangeRequest = PHAssetCollectionChangeRequest.ChangeRequest(collection);
albumChangeRequest.AddAssets(new PHObject[] { placeholder });
},
(ok, error) => {
if (error != null)
{
// someone set up us the bomb
}
});