.NET MAUI 條碼掃描器 SDK：幾分鐘內建置跨平台掃描器

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.CAMERA" />

<key>NSPhotoLibraryUsageDescription</key>
<string>Access needed to select barcode images for scanning.</string>
<key>NSCameraUsageDescription</key>
<string>Camera permission for barcode scanning.</string>

public static class MauiProgram
{
    public static MauiApp CreateMauiApp()
    {
        var builder = MauiApp.CreateBuilder();
        builder
            .UseMauiApp<App>()
            .ConfigureFonts(fonts =>
            {
                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
            });
        return builder.Build();
    }
}

Public Module MauiProgram
    Public Function CreateMauiApp() As MauiApp
        Dim builder = MauiApp.CreateBuilder()
        builder _
            .UseMauiApp(Of App)() _
            .ConfigureFonts(Sub(fonts)
                                fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular")
                            End Sub)
        Return builder.Build()
    End Function
End Module

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="BarcodeScanner.MainPage">
    <VerticalStackLayout Padding="20" Spacing="15">
        <Label Text=".NET MAUI Barcode Scanner" FontSize="24" HorizontalOptions="Center"/>
        <Button Text="Select Image to Scan" Clicked="OnSelectImageClicked"/>
        <Image x:Name="SelectedImageView" HeightRequest="200"/>
        <Label x:Name="ResultLabel" FontSize="16"/>
    </VerticalStackLayout>
</ContentPage>

using IronBarCode;
public partial class MainPage : ContentPage
{
    public MainPage()
    {
        InitializeComponent();
    }
    private async void OnSelectImageClicked(object sender, EventArgs e)
    {
        var result = await FilePicker.PickAsync(new PickOptions
        {
            FileTypes = FilePickerFileType.Images,
            PickerTitle = "Select a barcode image"
        });
        if (result != null)
        {
            // Display the selected image
            SelectedImageView.Source = ImageSource.FromFile(result.FullPath);
            // Read barcodes from the image file
            var barcodes = BarcodeReader.Read(result.FullPath);
            if (barcodes.Any())
            {
                ResultLabel.Text = $"Found: {barcodes.First().Value}";
            }
            else
            {
                ResultLabel.Text = "No barcodes detected in selected image.";
            }
        }
    }
}

Imports IronBarCode

Public Partial Class MainPage
    Inherits ContentPage

    Public Sub New()
        InitializeComponent()
    End Sub

    Private Async Sub OnSelectImageClicked(sender As Object, e As EventArgs)
        Dim result = Await FilePicker.PickAsync(New PickOptions With {
            .FileTypes = FilePickerFileType.Images,
            .PickerTitle = "Select a barcode image"
        })
        If result IsNot Nothing Then
            ' Display the selected image
            SelectedImageView.Source = ImageSource.FromFile(result.FullPath)
            ' Read barcodes from the image file
            Dim barcodes = BarcodeReader.Read(result.FullPath)
            If barcodes.Any() Then
                ResultLabel.Text = $"Found: {barcodes.First().Value}"
            Else
                ResultLabel.Text = "No barcodes detected in selected image."
            End If
        End If
    End Sub
End Class