Ios 使用导航项向下滑动手势

嗨，我想用向下滑动的手势导航回主菜单。问题是我使用的导航项来自导航控制器，因此无法检测到向下滑动。我该如何解决这个问题

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIScreenEdgePanGestureRecognizer *bezelSwipeGestureRecognizer = [[UIScreenEdgePanGestureRecognizer alloc] initWithTarget:self action:@selector(swipeBack:)];
    bezelSwipeGestureRecognizer.edges = UIRectEdgeTop;
    bezelSwipeGestureRecognizer.delegate = self;
    [self.view addGestureRecognizer:bezelSwipeGestureRecognizer];

    UIView *invisibleScrollPreventer = [UIView new];
    invisibleScrollPreventer.frame = CGRectMake(0, 0, self.view.frame.size.width, 100);
    [self.view addSubview:invisibleScrollPreventer];

}

-(void)swipeBack:(UIScreenEdgePanGestureRecognizer *)recognizer
{
    if (recognizer.state == UIGestureRecognizerStateEnded) {
        NSLog(@"Top Swipe");

        [self.presentingViewController dismissViewControllerAnimated:YES completion:nil];

    }
}

谢谢大家!

试试这个

-(void)swipeBack:(UIScreenEdgePanGestureRecognizer *)recognizer
{
    if (recognizer.state == UIGestureRecognizerStateEnded)
    {
        NSLog(@"Top Swipe");

        [self.navigationController popViewControllerAnimated:YES];


    }
}

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首先，为手势识别器创建一个出口：

@IBOutlet var swipeDownGestureRecognizer: UISwipeGestureRecognizer!

其次，将识别器添加到导航栏：

navigationController?.navigationBar.addGestureRecognizer(swipeDownGestureRecognizer)

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对不起，我没有把我的问题说清楚。基本上，我的问题是，我目前使用的刷卡甚至没有得到注册！我使用的代码在ViewController上运行得非常好，只是不适用于带有NavigationItems的UITableView。