UIActivityViewController and ALAsset - ios

Question

I have a task to share video from Assets Library to Vimeo. I'm implementing activity controller this way:
NSArray *activityItems = #[_videoAsset.defaultRepresentation.url];
UIActivityViewController *activity = [[UIActivityViewController alloc]
initWithActivityItems:activityItems
applicationActivities:nil];
activity.excludedActivityTypes = #[
UIActivityTypeAirDrop,
UIActivityTypeMessage,
UIActivityTypePostToFacebook,
];
[self presentViewController:activity animated:YES completion:nil];
Apple documentation says that I can share my ALAsset or URL as activity item, but I have only "Save Video" option in controller. So what am I doing wrong?

Answer 1

Had this problem too, eventually managed to share after saving ALAsset's data as a file and sharing it.
The code looks like this:
ALAssetsLibrary *assetsLibrary = [[ALAssetsLibrary alloc] init];
[assetsLibrary assetForURL:videoUrl resultBlock: ^(ALAsset *asset){
ALAssetRepresentation *rep = [asset defaultRepresentation];
Byte *buffer = (Byte*)malloc(rep.size);
NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:nil];
NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString* videoPath = [documentsDirectory stringByAppendingPathComponent:#"VIDEO.MOV"];
NSError *error;
[[NSFileManager defaultManager] removeItemAtPath:videoPath error:&error];
BOOL success = [data writeToFile:videoPath atomically:YES];
if (success) {
NSArray *activityItems = [NSArray arrayWithObjects:[NSURL fileURLWithPath:videoPath], nil];
UIActivityViewController *activityViewController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
[self presentViewController:activityViewController animated:YES completion:nil];
}
} failureBlock:nil];