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如何将视图从纵向模式更改为横向模式并锁定它？

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我有一个电影视图压缩在右下角视口与纵向模式 . 当用户展开电影视图时，电影视图将以横向模式扩展为全屏 . 我还想在全屏时将电影视图锁定为横向模式，无论设备的方向如何 .

注意：我的所有其他视图都处于纵向模式 .

我用这段代码引用了这个post，

应用设置，

enter image description here

AppDelegate.swift

internal var shouldRotate = false

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

视图控制器，

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，这使得视图可以更改为横向模式 . 设置方向后，我将shoudRotate设置为false以禁用旋转 . 然后我测试它，当我单击按钮，电影视图更改为横向，之后我旋转我的设备电影视图更改为纵向，并锁定到纵向模式而不是横向模式 .

ios swift user-interface orientation

1 回答

  • 0

    它是由这个功能引起的，

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

    改变 .allButUpsideDown 到 .landscape 会做 .

    可行的代码，

    AppDelegate.swift

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

    视图控制器，

    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
}
    回复于

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