Ios NSNotificationCenter线程在第二次调用时中断，即使已删除

我正在为两个不同的ViewController使用

NSNotificationCenter

。第一次调用

NSNotificationCenter

效果很好，之后我删除了观察者。但是如果我再次运行它，即使移除了观察者，线程也会断开

在ViewController1中：

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

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

在ViewController2中：

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

-(void)receiveNotification:(NSNotification *)notificaton
{
....
....
  [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
}

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

    -(void)receiveNotification:(NSNotification *)notificaton
    {
    ....
    ....
      [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
    }

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
}

我试着在

-（void）dealloc

中删除观察者，同样的事情也在发生。

---

尝试在

视图中删除观察者

-(void)viewDidDisappear:(BOOL)animated
{
     [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
}

对不起，我打错了，
我正在触发NSNotification的源ViewController中删除observer，我应该在使用它的第二个ViewController中删除它

在ViewController1中：

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

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

在ViewController2中：

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

-(void)receiveNotification:(NSNotification *)notificaton
{
....
....
  [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
}

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

    -(void)receiveNotification:(NSNotification *)notificaton
    {
    ....
    ....
      [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
    }

- (void)dealloc
{
    [[NSNotificationCenter defaultCenter] removeObserver:self name:@"textUpdateNotification" object:nil];
}

感谢大家发布stacktrace.notificationcenter在que中不起作用，我们需要删除ObserverStackTrace似乎与您的问题无关…实际上我获得了错误的线程访问权限。它没有在控制台中显示任何内容什么是“线程错误访问”？崩溃发生在
pickerdissal:
（
SOLS\u AS\u CreateAccountDetailViewController
）中。（您应该真正使用Objective-C命名约定。）