一键搞定iOS16横竖屏切换

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一键搞定iOS16横竖屏切换

2022-10-13

2026-10-12

iOS

Optimize

前言#

近期同事反馈视频横屏的功能失效了，在才发现 iOS16 下以前的方式无法使用了。于是完善了一些自己之前写的横竖屏切换的拓展。

一、 iOS16 之前#

1.1 切换横屏#

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UIDevice.current.setValue(UIDeviceOrientation.landscapeLeft.rawValue, forKey: "orientation")

1.2 切换竖屏#

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UIDevice.current.setValue(UIDeviceOrientation.portrait.rawValue, forKey: "orientation")

1.3 切换结果监听#

通过系统通知 UIDevice.orientationDidChangeNotification 监听提切换动作。

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@objc
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private func orientationDidChange(noti: Notification) {
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    guard
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        let device = noti.object as? UIDevice
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    else {
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        return
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    }
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    if device.orientation.isLandscape {
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        print("横屏")
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    } else {
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        print("竖屏")
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    }
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}

二、 iOS16#

更新了 iOS16 之后，发现上面的都没效果了，就…很可爱。iOS16 之后需要通过 Scene 来进行横竖屏的切换控制。

核心代码如下：

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func enterFullScreen() {
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    guard #available(iOS 16.0, *) else {
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        UIDevice.current.setValue(UIDeviceOrientation.landscapeLeft.rawValue, forKey: "orientation")
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        return
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    }
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    switchMode(full: true)
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}
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func exitFullScreen() {
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    guard #available(iOS 16.0, *) else {
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        UIDevice.current.setValue(UIDeviceOrientation.portrait.rawValue, forKey: "orientation")
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        return
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    }
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    switchMode(full: false)
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}
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@available(iOS 16.0, *)
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private func switchMode(full: Bool) {
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    guard
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        let scence = UIApplication.shared.connectedScenes.first as? UIWindowScene
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    else {
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        return
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    }
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    let orientation: UIInterfaceOrientationMask = full ? .landscape : .portrait
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    let geometryPreferencesIOS = UIWindowScene.GeometryPreferences.iOS(interfaceOrientations: orientation)
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    scence.requestGeometryUpdate(geometryPreferencesIOS) { error in
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    }
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}

三、RyukieSwifty/FullScreen#

iOS16

我对这些逻辑进行了封装可以简单的接入到项目之中。也提供了示例程序。GitHub: RyukieSwifty/FullScreen

pods 接入：

pod 'RyukieSwifty/FullScreen'

下面以一个 UIViewController 为例：

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import UIKit
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import RyukieSwifty
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class FullScreenViewController: UIViewController {
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    override func viewDidLoad() {
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        super.viewDidLoad()
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        setupUI()
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    }
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    // MARK: - Life
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    override func viewWillDisappear(_ animated: Bool) {
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        super.viewWillDisappear(animated)
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        swifty.exitFullScreen()
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    }
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    override func viewWillAppear(_ animated: Bool) {
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        super.viewWillAppear(animated)
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        swifty.needFullScreen()
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    }
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    override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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        super.viewWillTransition(to: size, with: coordinator)
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        if size.width > size.height {
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            switchButton.isSelected = true
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        } else {
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            switchButton.isSelected = false
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        }
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    }
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    // MARK: - Function-Public
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    // MARK: - Function-Private
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    // MARK: UI
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    private func setupUI() {
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        view.backgroundColor = .white
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        switchButton
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            .added(to: view)
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            .layout { make in
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                make?.center.equalToSuperview()
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            }
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    }
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    // MARK: Buiness
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    // MARK: Action
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    @objc
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    private func switchAction() {
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        switchButton.isSelected ? swifty.exitFullScreen() : swifty.enterFullScreen()
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    }
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    // MARK: Request
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    // MARK: - VarLet-Public
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    // MARK: - VarLet-Private
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    private lazy var switchButton: UIButton = {
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        return UIButton()
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            .config {
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                $0.setTitleColor(.black, for: .normal)
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                $0.setTitle("切换为横屏", for: .normal)
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                $0.setTitle("切换为竖屏", for: .selected)
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                $0.addTarget(self, action: #selector(switchAction), for: .touchUpInside)
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            }
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    }()
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}
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extension AppDelegate {
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    func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
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        return application.swifty.supportedInterfaceOrientations
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    }
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}

知识点梳理：JavaSctipt

重建二叉树

三、RyukieSwifty/FullScreen