supportedInterfaceOrientations无法正常工作 [英] supportedInterfaceOrientations not working

问题描述

我想要一些我的ViewControllers景观和一些肖像，所以这就是我所做的：

I want some of my ViewControllers landscape and some portrait so this is what I did:

我启用了横向模式：

接下来，我将这些代码行添加到我希望成为肖像控制器的视图中：

Next I added these lines of code to the view controllers I wanted to be Portrait:

-(NSUInteger)supportedInterfaceOrientations
{
    return UIInterfaceOrientationPortrait;
}
-(BOOL)shouldAutorotate
{
    return NO;
}
- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation {
    return UIInterfaceOrientationPortrait;
}

然而，当我旋转它们时，它们仍然会进入横向模式。我如何修复那个？

However when I rotate them they still go to landscape mode.How can I fix that?

推荐答案

我是这样做的。

创建一个UINavigationController父类。
你在里面
UINavigationController（父）覆盖这些方法，如：

Here is how I do it.
Make a UINavigationController parent class.
inside you UINavigationController (parent) override these methods like:

- (NSUInteger)supportedInterfaceOrientations
{
    if([self.topViewController respondsToSelector:@selector(supportedInterfaceOrientationsForThisContorller)])
    {
        return(NSInteger)[self.topViewController performSelector:@selector(supportedInterfaceOrientationsForThisContorller) withObject:nil];
    }
    return UIInterfaceOrientationPortrait;
}

- (BOOL)shouldAutorotate
{
    if([self.visibleViewController respondsToSelector:@selector(shouldAutorotateNow)])
    {
        BOOL autoRotate = (BOOL)[self.visibleViewController
                            performSelector:@selector(shouldAutorotateNow)
                            withObject:nil];
        return autoRotate;

    }
    return NO;
}

现在你的NavigationController应该是UINavigationContorller父类的子类

Now your NavigationController should be a subclass of the UINavigationContorller parent

Swift 3：

在UINavigationController子类中执行此操作

Inside your UINavigationController subclass do this

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
        get {
            return self.topViewController?.supportedInterfaceOrientations ?? .all
        }
    }

override var shouldAutorotate: Bool {
        return self.topViewController?.shouldAutorotate ?? false
    }

更新
来自Matt's如果您不想进行子类化，请回答：

：使你的viewController成为 viewDidLoad

first: make your viewController a delegate of the navigationController in viewDidLoad

self.navigationController?.delegate = self

然后声明UIViewController扩展以响应委托方法，如下所示：

Then declare UIViewController extension to respond to the delegate method as shown below:

extension UIViewController: UINavigationControllerDelegate {
    public func navigationControllerSupportedInterfaceOrientations(_ navigationController: UINavigationController) -> UIInterfaceOrientationMask {
        return navigationController.topViewController?.supportedInterfaceOrientations
    }
}

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