[[NSNotificationCenter defaultCenter] postNotificationName:@"wantuNewMessage" object:@"10"];
.m
- (void)viewDidAppear:(BOOL)animated{ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showNewMessage:) name:@"wantuNewMessage" object:nil]; } - (void)viewDidDisappear:(BOOL)animated{ [[NSNotificationCenter defaultCenter] removeObserver:self]; } - (void)showNewMessage:(NSNotification*) notification{ NSLog(@"wantu.showNewMessage"); [notification object]; }