如何在iOS 7上的UINavigationController中禁用后滑动手势

Question

在iOS 7中,Apple添加了一个新的默认导航行为.您可以从屏幕的左边缘滑动以返回导航堆栈.但在我的应用程序中,此行为与我的自定义左菜单冲突.那么,是否可以在UINavigationController中禁用这个新手势？

Answer 1

我找到了解决方案:

Objective-C的:

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
    self.navigationController.interactivePopGestureRecognizer.enabled = NO;
}

斯威夫特3:
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false

Answer 2

我发现将手势设置为禁用只是并不总是有效.它确实有效,但对我而言,它只是在我曾经使用过背景后才做到的.第二次它不会触发反馈.

修复我的是委托手势并实现shouldbegin方法返回NO:

- (void)viewDidAppear:(BOOL)animated
{
    [super viewDidAppear:animated];

    // Disable iOS 7 back gesture
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;
        self.navigationController.interactivePopGestureRecognizer.delegate = self;
    }
}

- (void)viewWillDisappear:(BOOL)animated
{
    [super viewWillDisappear:animated];

    // Enable iOS 7 back gesture
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.enabled = YES;
        self.navigationController.interactivePopGestureRecognizer.delegate = nil;
    }
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    return NO;
}

Answer 3

只需从NavigationController中删除手势识别器.在iOS 8中工作.

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)])
    [self.navigationController.view removeGestureRecognizer:self.navigationController.interactivePopGestureRecognizer];

Answer 4

从iOS 8开始,接受的答案不再适用.我需要停止在我的主游戏屏幕上解除手势,所以实现了这个:

- (void)viewDidAppear:(BOOL)animated
{
     [super viewDidAppear:animated];

if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
    self.navigationController.interactivePopGestureRecognizer.delegate = self;
    }
}

- (void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
    self.navigationController.interactivePopGestureRecognizer.delegate = nil;
    }

}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
     return NO;
}

Answer 5

我稍微改进了Twan的答案,因为:

1. 您的视图控制器可以设置为其他手势识别器的委托
2. nil当您返回到根视图控制器并在导航到其他地方之前进行滑动手势时,将委托设置为导致挂起问题.

以下示例假设iOS 7:

{
    id savedGestureRecognizerDelegate;
}

- (void)viewWillAppear:(BOOL)animated
{
    savedGestureRecognizerDelegate = self.navigationController.interactivePopGestureRecognizer.delegate;
    self.navigationController.interactivePopGestureRecognizer.delegate = self;
}

- (void)viewWillDisappear:(BOOL)animated
{
    self.navigationController.interactivePopGestureRecognizer.delegate = savedGestureRecognizerDelegate;
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
    if (gestureRecognizer == self.navigationController.interactivePopGestureRecognizer) {
        return NO;
    }
    // add whatever logic you would otherwise have
    return YES;
}

Answer 6

请在root vc中设置:

-(void)viewDidAppear:(BOOL)animated{
    [super viewDidAppear:YES];
    self.navigationController.interactivePopGestureRecognizer.enabled = NO;

}

-(void)viewDidDisappear:(BOOL)animated{
    [super viewDidDisappear:YES];
    self.navigationController.interactivePopGestureRecognizer.enabled = YES;
}

Answer 7

对于Swift:

navigationController!.interactivePopGestureRecognizer!.enabled = false

Answer 8

swift 5、swift 4.2 可以使用下面的代码。

// disable
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false
// enable
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = true

Answer 9

编辑

如果要管理特定导航控制器的滑动功能,请考虑使用SwipeBack.

有了这个,你可以设置navigationController.swipeBackEnabled = NO.

例如:

#import <SwipeBack/SwipeBack.h>

- (void)viewWillAppear:(BOOL)animated
{
    navigationController.swipeBackEnabled = NO;
}

它可以通过CocoaPods安装.

pod 'SwipeBack', '~> 1.0'

我为缺乏解释而道歉.

Answer 10

它适用于ios 10及更高版本:

- (void)viewWillAppear:(BOOL)animated {
    if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
        self.navigationController.interactivePopGestureRecognizer.enabled = NO;
    }

}

它不适用于viewDidLoad()方法.