UserNotification ios 10 - objective-c

Question

I want to show a gif animation in UserNotification(local notification), but i am only able to show an image in user notification, the animation don't get displayed. I am doing this in objective-c
my code
//scheduling an notification
NSString *UNExtensionID=#"animatedContentExtension";
NSError *error;
UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
content.title = [NSString localizedUserNotificationStringForKey:#"Test Notification:" arguments:nil];
content.body = [NSString localizedUserNotificationStringForKey:#"Hello there！It is a multimedia notification with animation!"
arguments:nil];
content.sound = [UNNotificationSound defaultSound];
UNNotificationAttachment *attachment;
NSURL *url = [[NSBundle mainBundle] URLForResource:#"bike" withExtension:#"png"];
attachment=[UNNotificationAttachment attachmentWithIdentifier:#"imageID"
URL: url
options:nil
error:&error];
content.attachments=#[attachment];
content.categoryIdentifier=UNExtensionID;
content.badge = #([[UIApplication sharedApplication] applicationIconBadgeNumber] + 1);
UNTimeIntervalNotificationTrigger *trigger = [UNTimeIntervalNotificationTrigger
triggerWithTimeInterval:20.0f repeats:NO];
UNNotificationRequest *request = [UNNotificationRequest requestWithIdentifier:#"FiveSecond"
content:content trigger:trigger];
UNUserNotificationCenter *center = [UNUserNotificationCenter currentNotificationCenter];
[center addNotificationRequest:request withCompletionHandler:^(NSError * _Nullable error) {
if (!error) {
NSLog(#"add NotificationRequest succeeded!");
}
}];
// this code in AppDelegate
- (void)didReceiveNotificationRequest:(UNNotificationRequest *)request
withContentHandler:(void (^)(UNNotificationContent *contentToDeliver))contentHandler{
UNNotificationAttachment *attachment;
NSError *error;
UNMutableNotificationContent *content = [[UNMutableNotificationContent alloc] init];
NSURL *url = [[NSBundle mainBundle] URLForResource:#"bike" withExtension:#"png"];
attachment=[UNNotificationAttachment attachmentWithIdentifier:#"imageID"
URL:url
options:nil
error:&error];
content=request.content.mutableCopy;
content.attachments= #[attachment];
`enter code here`contentHandler(content);
}

Answer 1

You have to add your .gif file in the Notification Service Extension file.
You can create an UNNotificationAttachment object out of it and pass in the completionHandler of func didReceiveNotificationRequest(request: UNNotificationRequest, withContentHandler contentHandler: (UNNotificationContent) -> Void) method of UNNotificationServiceExtension subclass.