.NET MAUI 条形码扫描仪不适用于一维代码

Question

我在使用 Camera.MAUI 库扫描代码时遇到问题。当我扫描二维码时，一切都按预期进行。当我想扫描一维码时，扫描仪无法检测到它。 我尝试了来自互联网和产品的各种条形码（例如超高温灭菌牛奶条形码）。它不会每次都检测到此代码。

我在.net 7.0 中创建应用程序。下面是代码。

*.xaml 文件：

<toolkit:Popup xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:cv="clr-namespace:Camera.MAUI;assembly=Camera.MAUI"
             xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
             x:Class="InvScanPro.Views.ScannerPage">
    <ScrollView>
        <VerticalStackLayout
            Spacing="25"
            Padding="30"
            VerticalOptions="Center">
            
            <cv:CameraView
                x:Name="CameraView"
                HeightRequest="450"
                WidthRequest="350"
                CamerasLoaded="CameraView_CamerasLoaded"
                BarCodeDetectionEnabled="True"
                BarcodeDetected="CameraView_BarcodeDetected"/>

        </VerticalStackLayout>
    </ScrollView>
</toolkit:Popup>

*.xaml.cs 文件：

public partial class ScannerPage : Popup
{
    private bool _isScanning;

    public ScannerPage()
    {
        InitializeComponent();

        InitializeBarCodeOptions();
    }

    private void InitializeBarCodeOptions()
    {
        CameraView.BarCodeOptions = new BarcodeDecodeOptions
        {
            AutoRotate = true,

            PossibleFormats =
            {
                ZXing.BarcodeFormat.QR_CODE,
                ZXing.BarcodeFormat.All_1D
            }
        };
    }

    private void CameraView_CamerasLoaded(object sender, EventArgs e)
    {
        if (CameraView.Cameras.Count <= 0) return;

        CameraView.Camera = CameraView.Cameras.First();
        MainThread.BeginInvokeOnMainThread(async () =>
        {
            await CameraView.StopCameraAsync();
            await CameraView.StartCameraAsync();
        });
    }

    private void CameraView_BarcodeDetected(object sender, Camera.MAUI.ZXingHelper.BarcodeEventArgs args)
    {
        if (_isScanning) return;

        MainThread.BeginInvokeOnMainThread(async () =>
        {
            _isScanning = true;
            Vibration.Default.Vibrate(new TimeSpan(0, 0, 0, 0, 100));
            await CameraView.StopCameraAsync();
            await CloseAsync(args.Result[0].Text);
        });
    }
}

MauiProgram.cs

        var builder = MauiApp.CreateBuilder();
        builder
            .UseMauiApp<App>()            
            .ConfigureFonts(fonts =>
        {
            fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
            fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
        })
            .UseMauiCameraView()
            .UseMauiCommunityToolkit();

Answer 1

这是一种已知的行为，它可以工作，但你必须横向/水平旋转阅读器（手机），如果有人有保持垂直视图的解决方案，提前致谢......