待尝试通知

[[NSNotificationCenter defaultCenter] postNotificationName:@"aNotification" object:nil];

有空可以试试下面的看可以不

// Foo.h

UIKIT_EXTERN NSNotificationNameconstZOCFooDidBecomeBarNotification

// Foo.m

NSNotificationNameconstZOCFooDidBecomeBarNotification = @"ZOCFooDidBecomeBarNotification";