如何使用Swift锁定仅主视图的肖像方向

问题描述

我已经使用 swift 为iPhone创建了一个应用程序，该应用程序由嵌入在导航控制器中的许多视图组成.我想将主视图锁定为纵向，而将导航控制器的子视图锁定为横向.这是我的意思的示例:

I have created an application for iPhone, using swift, that is composed from many views embedded in a navigation controller. I would like to lock the main view to Portrait orientation and only a subview of a navigation controller locked in Landscape orientation.Here is an example of what i mean:

• UINavigationController
  • UiViewController1(纵向锁定)初始视图控制器，在导航栏上放置一个按钮，使用户可以访问列表，在列表中可以选择其他视图
  • UIViewController2(锁定为横向模式)
  • UiViewController3(纵向和横向)
  • UiViewController4(纵向和横向)
  • ...
  • ...
  • UINavigationController
    • UiViewController1 (Locked in Portrait) Initial view controller with a button placed on the navigation bar that give to the user the possibility to access to a lists where can be selected other views
    • UIViewController2 (Locked in Landscape)
    • UiViewController3 (Portrait and Landscape)
    • UiViewController4 (Portrait and Landscape)
    • ...
    • ...

    我该怎么做?

    推荐答案

    根据针对supportedInterfaceOrientations的Swift Apple文档:

    According to the Swift Apple Docs for supportedInterfaceOrientations:

    您的导航控制器应覆盖shouldAutorotate和supportedInterfaceOrientations，如下所示.为了方便起见，我在UINavigationController扩展程序中做到了这一点:

    Your navigation controller should override shouldAutorotate and supportedInterfaceOrientations as shown below. I did this in a UINavigationController extension for ease:

    extension UINavigationController {
        public override func shouldAutorotate() -> Bool {
            return true
        }
    
        public override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
            return (visibleViewController?.supportedInterfaceOrientations())!
        }
    }
    

    您的主视图控制器(始终为肖像)应该具有:

    And your main viewcontroller (portrait at all times), should have:

    override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return UIInterfaceOrientationMask.Portrait
    }
    

    然后，在您的子视图控制器中要支持纵向或横向:

    Then, in your subviewcontrollers that you want to support portrait or landscape:

    override func supportedInterfaceOrientations() -> UIInterfaceOrientationMask {
        return UIInterfaceOrientationMask.All
    }
    

    已针对iOS 9更新:-)

    这篇关于如何使用Swift锁定仅主视图的肖像方向的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！