Return result after the share action is completed.

[ashot3]

Is it possible add completion for share action? In iOS must be set completionWithItemsHandler for a ActivityViewController

    activityViewController.completionWithItemsHandler = ^(NSString *activityType,
                                                          BOOL completed,
                                                          NSArray *returnedItems,
                                                          NSError *error) {
        
        if (error) {
            result(@-2);
        } else if (completed) {
            // user shared an item
            result(@0);
        } else {
            // user cancelled
            result(@-1);
        }
    };