PHAsset get original file name

Question

I wonder if there any way to get the original file name using PHAsset?

I use the following code to extract the file info.

   [[PHImageManager defaultManager] requestImageDataForAsset:asset options:requestOption resultHandler:^(NSData *imageData, NSString *dataUTI, UIImageOrientation orientation, NSDictionary *info) {     entity.fileUrl =  [info objectForKey:@"PHImageFileURLKey"];     entity.filename = [[NSFileManager defaultManager] displayNameAtPath:[ entity.fileUrl path]];    }]; 

However, It doesn't return original name but the name in the format "img_123" I've just checked official apple docs . there has been introduced a new class PHAssetResource and the property originalFilename which is available in the iOS 9+. The problem is that I use the image picker library CTAssetsPickerController which 's based on the Photos framework; it returns picked image as the PHAsset object . PS. I'm looking for the solution which is compatible with iOS 8 :). Thank you!