NSNotificationCenter的使用和解析

新建通知 和 要通知的内容 

NSDictionary* dic = @{@"username":username};

[[NSNotificationCenter defaultCenter]postNotificationName:@"didReciveBuddyRequest" object:nil userInfo:dic];

然后监听通知 并解析info

[[NSNotificationCenter defaultCenter]addObserver:self selector:@selector(didreceiveRequest:) name:@"didReciveBuddyRequest" object:nil];

-(void)didreceiveRequest:(NSNotification*)info

{

    NSDictionary* dic = [info userInfo];

    NSString* username = [dic objectForKey:@"username"];

NSNotificationCenter的使用和解析

原文：http://blog.csdn.net/shanchelicun/article/details/47173333