RestoreSettings.cs

public async Task<string> GetResultAsync()
{
    var scanner = new MobileBarcodeScanner();
    Result result = await scanner.Scan();
    RestoreCameraSettings();
    return result?.Text;
}

private void RestoreCameraSettings()
{
    var devices = AVCaptureDevice.DevicesWithMediaType(AVMediaType.Video);

    AVCaptureDevice captureDevice = null;
    
    foreach (var device in devices)
    {
        if (device.Position == AVCaptureDevicePosition.Back)
        {
            captureDevice = device;
        }
    }

    if (captureDevice == null)
    {
        return;
    }

    if (captureDevice.LockForConfiguration(out NSError err))
    {
        if (UIDevice.CurrentDevice.CheckSystemVersion(7, 0) && captureDevice.AutoFocusRangeRestrictionSupported)
        {
            captureDevice.AutoFocusRangeRestriction = AVCaptureAutoFocusRangeRestriction.None;
        }
        captureDevice.UnlockForConfiguration();
    }
}

isn't that a little bit of code violation to use the xamarin.ios in portable project.?