iOS 通知 NSNotification

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

#pragma mark (通知处理)接收通知更改频道名称
- (void)TongZhiJianTingFangFa:(NSNotification *)notification {
//在这里面接收通知传送的信息，进行需要的操作
NSLog(@"%@",notification);
}

-(void)dealloc{
//移除通知
[[NSNotificationCenter defaultCenter] removeObserver:@"TongZhi_Type"];
}

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