如何隐藏导航栏，而不会失去滑动function
我有一个UITableView，它有一个导航栏（从UINavigationViewController获得），它可以通过用手指滑回去。
我试图隐藏导航栏，但保持滑动function，代码：
- (void)viewWillAppear:(BOOL)animated { [[self navigationController] setNavigationBarHidden:YES animated:YES]; } 这成功地隐藏了导航栏，但是，我不能再滑回到最后一个屏幕。
有什么办法可以隐藏导航栏，但保持滑动的能力？
如果你使用的话，用Swift 2testing@ gabbler的解决scheme
self.navigationController?.navigationBar.hidden = true
Swift 3.0
self.navigationController?.navigationBar.isHidden = true
代替
self.navigationController?.navigationBarHidden = true
滑回手势就像一个魅力！
find解决办法：
- (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; // hide nav bar [[self navigationController] setNavigationBarHidden:YES animated:YES]; // enable slide-back if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) { self.navigationController.interactivePopGestureRecognizer.enabled = YES; self.navigationController.interactivePopGestureRecognizer.delegate = self; } } - (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer { return YES; }
在.h文件中，符合UIGestureRecognizerDelegate
使用
self.navigationController.navigationBar.hidden = YES;
或者在viewWillAppear中添加这一行：
self.navigationController.interactivePopGestureRecognizer.delegate = self;
看来交互效果不佳，添加这一行，并使视图控制器符合UIGestureRecognizerDelegate协议将使其工作。
确保包括：
self.navigationController.navigationBar.hidden = YES;
和：
self.navigationController.interactivePopGestureRecognizer.delegate = self;
和：
if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) { self.navigationController.interactivePopGestureRecognizer.enabled = YES; }
它应该是这样的：
- (void)viewWillAppear:(BOOL)animated { self.navigationController.navigationBar.hidden = YES; self.navigationController.interactivePopGestureRecognizer.delegate = self; if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) { self.navigationController.interactivePopGestureRecognizer.enabled = YES; } } - (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer { return YES; }
对于Xamarinforms我是奋斗与此，所以首先不NavigationRenderer你会得到NavigationController null而不是使用PageRenderer：
[assembly: Xamarin.Forms.ExportRenderer(typeof(ContentPage), typeof(ContentPageRenderer))] namespace sample { class ContentPageRenderer : PageRenderer { public override void ViewWillAppear(bool animated) { base.ViewDidAppear(animated); var navctrl = this.ViewController.NavigationController; navctrl.InteractivePopGestureRecognizer.Delegate = new UIGestureRecognizerDelegate(); navctrl.InteractivePopGestureRecognizer.Enabled = true; } } }
如果隐藏导航栏没有帮助，请尝试更改导航栏的矩形并查看？
navBarBgFrame.origin.y = – navBarBgFrame.size.height;