单视图控制器 swift 5 中的方向支持

Question

我需要在单视图控制器中支持方向

我尝试但没有成功。现在在整个应用程序中定位。

override func viewDidLoad() {
    super.viewDidLoad()

    self.lockOrientation()
}

func lockOrientation() {
    let orientationValue = UIInterfaceOrientation.portrait.rawValue
    UIDevice.current.setValue(orientationValue, forKey: "orientation")
}

override var shouldAutorotate: Bool {
    return false
}

override var supportedInterfaceOrientations: UIInterfaceOrientationMask {
    return .portrait
}

override var preferredInterfaceOrientationForPresentation: UIInterfaceOrientation {
    return .portrait
}

Answer 1

将以下代码放入AppDelegate

仅在项目常规设置中将设备方向保留为纵向

var restrictRotation: Bool = true

func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
    if restrictRotation {
        return .portrait
    } else {
        return .all
    }
}

将您想要允许/禁用方向的代码放在下面。

override func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)
    self.restrictRotation(false) //TRUE TO RESTRICT ORIENTATION && FALSE TO ALLOW ORIENTATION
}

func restrictRotation(_ restriction: Bool) {
    let appDelegate = UIApplication.shared.delegate as? AppDelegate
    appDelegate?.restrictRotation = restriction
}

Answer 2

问题已通过bmjohns 回答解决 请访问并检查。

@bmjohns 回答更新版本

斯威夫特 5

// set orientations you want to be allowed in this property by default
var orientationLock = UIInterfaceOrientationMask.all

func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
        self.lockOrientation()
        return true
}

func unlockOriention () {
    self.orientationLock = .all
}

func lockOrientation() {
    self.orientationLock = .portrait
}

SecondViewController.swift

同时支持方向

override func viewDidLoad() {
        super.viewDidLoad()
        let appDelegate = UIApplication.shared.delegate as! AppDelegate
        appDelegate.unlockOriention()
    }