ios开发中的广播使用方法

1.//注册信息：
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(aNotificationHandler:) name:@"MyNotification_DetailViewController" object:nil];
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2.//获得广播信息调用的方法
- (void)aNotificationHandler:(NSNotification*)notification {
   
}
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3.//发送通知给主界面 告诉主界面更新自己的界面
                NSNotification* notification = [NSNotification notificationWithName:@"MyNotification_DetailViewController" object:nil]; 
                [[NSNotificationCenter defaultCenter] postNotification:notification];
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在注册广播的页面不要忘记关闭广播
4.    //关闭广播系统：
    [[NSNotificationCenter defaultCenter] removeObserver:self];