public static Task <PHAssetCollection> CreateAlbum(string name)
{
var source = new TaskCompletionSource <PHAssetCollection>();
PHObjectPlaceholder placeholder = null;
PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(() =>
{
var request = PHAssetCollectionChangeRequest.CreateAssetCollection(name);
placeholder = request.PlaceholderForCreatedAssetCollection;
}, (success, err) =>
{
if (success)
{
var result = PHAssetCollection.FetchAssetCollections(new[] { placeholder.LocalIdentifier }, null);
source.SetResult((PHAssetCollection)result.firstObject);
}
else
{
source.SetException(new Exception(err.ToString()));
}
});
return(source.Task);
}
void FinishCapture(object sender, Tuple <NSObject, NSError> e)
{
if (Element == null || Control == null)
{
return;
}
if (e.Item2 != null)
{
Element.RaiseMediaCaptureFailed(e.Item2.LocalizedDescription);
return;
}
var photoData = e.Item1 as NSData;
if (!Element.SavePhotoToFile && photoData != null)
{
var data = UIImage.LoadFromData(photoData).AsJPEG().ToArray();
Device.BeginInvokeOnMainThread(() =>
{
Element.RaiseMediaCaptured(new MediaCapturedEventArgs(imageData: data));
});
return;
}
PHObjectPlaceholder placeholder = null;
PHPhotoLibrary.RequestAuthorization(status =>
{
if (status != PHAuthorizationStatus.Authorized)
{
return;
}
// Save the captured file to the photo library.
PHPhotoLibrary.SharedPhotoLibrary.PerformChanges(() =>
{
var creationRequest = PHAssetCreationRequest.CreationRequestForAsset();
if (photoData != null)
{
creationRequest.AddResource(PHAssetResourceType.Photo, photoData, null);
placeholder = creationRequest.PlaceholderForCreatedAsset;
}
else if (e.Item1 is NSUrl outputFileUrl)
{
creationRequest.AddResource(
PHAssetResourceType.Video,
outputFileUrl,
new PHAssetResourceCreationOptions
{
ShouldMoveFile = true
});
placeholder = creationRequest.PlaceholderForCreatedAsset;
}
}, (success2, error2) =>
{
if (!success2)
{
Debug.WriteLine($"Could not save media to photo library: {error2}");
if (error2 != null)
{
Element.RaiseMediaCaptureFailed(error2.LocalizedDescription);
return;
}
Element.RaiseMediaCaptureFailed($"Could not save media to photo library");
return;
}
if (!(PHAsset.FetchAssetsUsingLocalIdentifiers(new[] { placeholder.LocalIdentifier }, null).firstObject is PHAsset asset))
{
Element.RaiseMediaCaptureFailed($"Could not save media to photo library");
return;
}
if (asset.MediaType == PHAssetMediaType.Image)
{
asset.RequestContentEditingInput(new PHContentEditingInputRequestOptions
{
CanHandleAdjustmentData = p => true
}, (input, info) =>
{
Device.BeginInvokeOnMainThread(() =>
{
Element.RaiseMediaCaptured(new MediaCapturedEventArgs(input.FullSizeImageUrl.Path));
});
});
}
else if (asset.MediaType == PHAssetMediaType.Video)
{
PHImageManager.DefaultManager.RequestAvAsset(asset, new PHVideoRequestOptions
{
Version = PHVideoRequestOptionsVersion.Original
}, (avAsset, mix, info) =>
{
if (!(avAsset is AVUrlAsset urlAsset))
{
Element.RaiseMediaCaptureFailed($"Could not save media to photo library");
return;
}
Device.BeginInvokeOnMainThread(() =>
{
Element.RaiseMediaCaptured(new MediaCapturedEventArgs(urlAsset.Url.Path));
});
});
}
});
