横竖屏监测

横竖屏监测

func addOrientationChangedNotification() {
    //感知设备方向 - 开启监听设备方向
    UIDevice.current.beginGeneratingDeviceOrientationNotifications()
    //添加通知，监听设备方向改变
    NotificationCenter.default.addObserver(self, selector: #selector(receivedRotation),
                                                 name: UIDevice.orientationDidChangeNotification, object: nil)

    //关闭设备监听
    //UIDevice.current.endGeneratingDeviceOrientationNotifications()
}

//通知监听触发的方法
@objc func receivedRotation(){
    let device = UIDevice.current
    print("*******",device.orientation.rawValue)
    switch device.orientation{
    case .landscapeLeft, .landscapeRight:
        if isBack {
            backView.isLandScape = true
        } else {
            frontView.isLandScape = true
        }
    default:
        if isBack {
            backView.isLandScape = false
        } else {
            frontView.isLandScape = false
        }
    }
}
    deinit {
    // 移除通知
    NotificationCenter.default.removeObserver(self)
    UIDevice.current.endGeneratingDeviceOrientationNotifications()
}