.NET MAUI QR 碼掃描器

VBC#

using IronQr;
using IronSoftware.Drawing;

// OnScanButtonClicked method triggered by the scan button
private async void OnScanButtonClicked(object sender, EventArgs e)
{
    // Open the device image picker
    var images = await FilePicker.Default.PickAsync(new PickOptions
    {
        PickerTitle = "Pick image",
        FileTypes = FilePickerFileType.Images
    });
    var imageSource = images.FullPath.ToString();

    // Load the selected image into AnyBitmap
    var inputBmp = AnyBitmap.FromFile(imageSource);

    // Load the asset into QrImageInput
    QrImageInput imageInput = new QrImageInput(inputBmp);

    // Create a QR Reader object
    QrReader reader = new QrReader();

    // Read the input and get all embedded QR Codes
    IEnumerable<QrResult> results = reader.Read(imageInput);

    // Display the first result
    resultLabel.Text = "Scanned Text: " + results.First().Value;
}

Imports IronQr
Imports IronSoftware.Drawing

' OnScanButtonClicked method triggered by the scan button
Private Async Sub OnScanButtonClicked(ByVal sender As Object, ByVal e As EventArgs)
    ' Open the device image picker
    Dim images = Await FilePicker.Default.PickAsync(New PickOptions With {
        .PickerTitle = "Pick image",
        .FileTypes = FilePickerFileType.Images
    })
    Dim imageSource = images.FullPath.ToString()

    ' Load the selected image into AnyBitmap
    Dim inputBmp = AnyBitmap.FromFile(imageSource)

    ' Load the asset into QrImageInput
    Dim imageInput As New QrImageInput(inputBmp)

    ' Create a QR Reader object
    Dim reader As New QrReader()

    ' Read the input and get all embedded QR Codes
    Dim results As IEnumerable(Of QrResult) = reader.Read(imageInput)

    ' Display the first result
    resultLabel.Text = "Scanned Text: " & results.First().Value
End Sub

PM > Install-Package IronQR

Install-Package IronQR

.NET MAUI QR 碼掃描器

在.NET MAUI移動應用程式中使用IronQR掃描QR碼。使用QrReader.Read解碼。通過單一共享程式碼庫運行於Android和iOS。

建置MAUI QR碼掃描器的5步指南

using IronQr;
using IronSoftware.Drawing;
var images = await FilePicker.Default.PickAsync(new PickOptions { FileTypes = FilePickerFileType.Images });
var inputBmp = AnyBitmap.FromFile(images.FullPath.ToString();
IEnumerable<QrResult> results = reader.Read(imageInput);

程式碼說明

FilePicker.Default.PickAsync 打開當前平台上的原生圖片選擇器，僅過濾圖片型別。選定檔案的完整路徑可以用AnyBitmap.FromFile，不論格式如何都可以載入到位圖中。 QrImageInput 封裝該位圖，使IronQR能與之協作，並且QrReader.Read 返回IEnumerable<QrResult>。 First().Value 從第一個結果中提取解碼字串。

探索完整的.NET MAUI QR Code掃描器教程，使用IronQR。