NSSharingService activityType?

How to do this horrible description indexOfString nicer?

Can't find any property helping in NSSharingService :(

See mostly AppDelegate.m

My category

@implementation NSSharingService (ActivityType)

@implementation NSSharingService (ActivityType)

- (NSString*)activityType {
    NSRange range = [self.description rangeOfString:@"\\[com.apple.share.*\\]" options:NSRegularExpressionSearch];
    range.location++; // Start after [
    range.length -= 2; // Remove both [ and ]
    return [self.description substringWithRange:range];
}
@end

Allows you to do

[[sharingService activityType] isEqualToString:NSSharingServiceNameAddToSafariReadingList];

[@[NSSharingServiceNameAddToSafariReadingList, NSSharingServiceNameAddToIPhoto] containsObject:[sharingService activityType]];

Also check this out: http://stackoverflow.com/questions/21797141/nssharingservice-how-to-compare-with-the-constants/21904921

PS: And how to avoid that should not be called on mouseUp warning?

As a reference, here are some of the values of those NSSharingServiceName* constants, all starting with com.apple.share.

PostOnFacebook                  Facebook.post
PostOnTwitter                   Twitter.post
PostOnSinaWeibo                 SinaWeibo.post
PostOnTencentWeibo              TencentWeibo.post
PostOnLinkedIn                  LinkedIn.post
ComposeEmail                    Mail.compose
ComposeMessage                  Messages.compose
SendViaAirDrop                  AirDrop.send
UseAsTwitterProfileImage        Twitter.set-profile-image
UseAsFacebookProfileImage       Facebook.set-profile-image
UseAsLinkedInProfileImage       LinkedIn.set-profile-image
PostImageOnFlickr               Video.upload-image-Flickr
AddToSafariReadingList          System.add-to-safari-reading-list
AddToIPhoto                     System.add-to-iphoto