ios - 如何将 View 从纵向模式更改为横向模式并锁定它？

Question

我在右下视口(viewport)以纵向模式压缩了电影 View 。当用户展开电影 View 时，电影 View 将在横向模式下扩展到全屏。我还想在全屏时将电影 View 锁定为横向模式，无论设备处于什么方向。

注意:我的所有其他 View 都是纵向模式。

我引用了这个post使用此代码，

应用程序设置，

AppDelegate.swift

internal var shouldRotate = false

func application(_ application: UIApplication,
                 supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
    return shouldRotate ? .allButUpsideDown : .portrait
}

View Controller ，

func expandPlayerWindow(button: UIButton) {
    self.player.view.frame = CGRect(x:0, y:-20, width: UIScreen.main.bounds.maxY, height: UIScreen.main.bounds.maxX)
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    print(appDelegate.shouldRotate)
    print(self.supportedInterfaceOrientations)
    appDelegate.shouldRotate = true // or false to disable rotation
    let value = UIInterfaceOrientation.landscapeLeft.rawValue
    UIDevice.current.setValue(value, forKey: "orientation")
    print(appDelegate.shouldRotate)
    print(self.supportedInterfaceOrientations)
    appDelegate.shouldRotate = false
    print(appDelegate.shouldRotate)
    print(self.supportedInterfaceOrientations)
    UIApplication.shared.isStatusBarHidden = false
}

日志，

false
UIInterfaceOrientationMask(rawValue: 26)
true
UIInterfaceOrientationMask(rawValue: 26)
false
UIInterfaceOrientationMask(rawValue: 26)

我在setorientation之前将shouldRotate设置为true，这使得 View 可以更改为横向模式。设置方向后，我将 shaudRotate 设置为 false 以禁用旋转。然后我测试它，当我单击按钮时，电影 View 更改为横向，之后我旋转设备，电影 View 更改为纵向，并锁定为纵向模式而不是横向模式。

Answer 1

是这个函数造成的，

func application(_ application: UIApplication,
                 supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
    return shouldRotate ? .allButUpsideDown : .portrait
}

将 .allButUpsideDown 更改为 .landscape 即可。

可行的代码，

AppDelegate.swift

func application(_ application: UIApplication,
                 supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
    return shouldRotate ? .landscape : .portrait
}

View Controller ，

func expandPlayerWindow() {
    self.player.view.frame = CGRect(x:0, y:-20, width: UIScreen.main.bounds.maxY, height: UIScreen.main.bounds.maxX)
    let appDelegate = UIApplication.shared.delegate as! AppDelegate
    appDelegate.shouldRotate = true // or false to disable rotation
    let value = UIInterfaceOrientation.landscapeLeft.rawValue
    UIDevice.current.setValue(value, forKey: "orientation")
    appDelegate.shouldRotate = true
    UIApplication.shared.isStatusBarHidden = true
}