在iOS 7中,苹果增加了一个新的默认导航行为。你可以从屏幕的左边缘滑动回到导航堆栈。但在我的应用程序中,这种行为与我的自定义左侧菜单冲突。那么,是否有可能在UINavigationController中禁用这个新手势?
当前回答
迅速:
navigationController!.interactivePopGestureRecognizer!.enabled = false
其他回答
没有一个给出的答案帮助我解决这个问题。在这里张贴我的答案;可能对某人有帮助
声明私有var popGesture: UIGestureRecognizer?作为视图控制器中的全局变量。然后在viewDidAppear和viewWillDisappear方法中实现代码
override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
if self.navigationController!.respondsToSelector(Selector("interactivePopGestureRecognizer")) {
self.popGesture = navigationController!.interactivePopGestureRecognizer
self.navigationController!.view.removeGestureRecognizer(navigationController!.interactivePopGestureRecognizer!)
}
}
override func viewWillDisappear(animated: Bool) {
super.viewWillDisappear(animated)
if self.popGesture != nil {
navigationController!.view.addGestureRecognizer(self.popGesture!)
}
}
这将禁用滑动回iosv8。x起
从iOS 8开始,接受的答案不再有效。我需要在我的主游戏屏幕上停止滑动来解散手势,所以执行了这个:
- (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;
}
我对Twan的回答做了一些修改,因为:
你的视图控制器可以被设置为其他手势识别器的委托 当你回到根视图控制器并在导航到其他地方之前做一个滑动手势时,将委托设置为nil会导致挂起问题。
下面以iOS 7为例:
{
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;
}
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];
它适用于我的大多数视图控制器。
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false
对于一些视图控制器,比如UIPageViewController,它并不是无效的。在UIPageViewController的pagecontentviewcontroller下面的代码为我工作。
override func viewDidLoad() {
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false
self.navigationController?.interactivePopGestureRecognizer?.delegate = self
}
override func viewWillDisappear(_ animated: Bool) {
self.navigationController?.interactivePopGestureRecognizer?.isEnabled = false
self.navigationController?.interactivePopGestureRecognizer?.delegate = nil
}
On UIGestureRecognizerDelegate,
func gestureRecognizerShouldBegin(_ gestureRecognizer: UIGestureRecognizer) -> Bool {
if gestureRecognizer == self.navigationController?.interactivePopGestureRecognizer {
return false
}
return true
}
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