1. 项目不能横屏但是某些页面如视频播放需要横屏
   需要勾选横竖屏
   

在AppDelegate中全局设置

var isForceLandscape:Bool = false
   var isForcePortrait:Bool = false
   var isForceAllDerictions:Bool = false //支持所有方向


  //设置屏幕旋转
   func application(_ application: UIApplication, supportedInterfaceOrientationsFor window: UIWindow?) -> UIInterfaceOrientationMask {
       if isForceAllDerictions == true {
           return .all
       } else if isForceLandscape == true {
           return .landscape
       } else if isForcePortrait == true {
           return .portrait
       }
       return .portrait
   }

在控制器中调用这两个方法来强制旋转

// 强制旋转横屏
func forceOrientationLandscape() {
    let appdelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
    appdelegate.isForceLandscape = true
    appdelegate.isForcePortrait = false
    _ = appdelegate.application(UIApplication.shared, supportedInterfaceOrientationsFor: view.window)
    let oriention = UIInterfaceOrientation.landscapeRight // 设置屏幕为横屏
    UIDevice.current.setValue(oriention.rawValue, forKey: "orientation")
    UIViewController.attemptRotationToDeviceOrientation()
}
// 强制旋转竖屏
func forceOrientationPortrait() {
    let appdelegate:AppDelegate = UIApplication.shared.delegate as! AppDelegate
    appdelegate.isForceLandscape = false
    appdelegate.isForcePortrait = true
    _ = appdelegate.application(UIApplication.shared, supportedInterfaceOrientationsFor: view.window)
    let oriention = UIInterfaceOrientation.portrait // 设置屏幕为竖屏
    UIDevice.current.setValue(oriention.rawValue, forKey: "orientation")
    UIViewController.attemptRotationToDeviceOrientation()
}