#import @interface TSPresentationDelegate : NSObject @property (class) UIViewController* presentationViewController; @property (class) UIAlertController* activityController; + (void)startActivity:(NSString*)activity withCancelHandler:(void (^)(void))cancelHandler; + (void)startActivity:(NSString*)activity; + (void)stopActivityWithCompletion:(void (^)(void))completion; + (void)presentViewController:(UIViewController *)viewControllerToPresent animated:(BOOL)flag completion:(void (^)(void))completion; @end