Code-barres & OCR par IA
pour appareils Zebra
en C#.

CatturaScanner.Configure(new CatturaConfig
{
    RecognitionMode = RecognitionMode.Barcode,
    SelectionMode   = SelectionMode.Automatic,
});

CatturaScanner.Scan(activity, new MyCallback());

// ── Callback ──────────────────────────────────────────────
class MyCallback : Java.Lang.Object, ICatturaCallback
{
    public void OnResult(CatturaResult r)
        => Console.WriteLine($"[{r.Symbology}] {r.Value}");

    public void OnResults(IList<CatturaResult> rs) { }
    public void OnError(CatturaError e) { }
    public void OnCancelled() { }
}

CatturaScanner.Configure(new CatturaConfig
{
    RecognitionMode = RecognitionMode.Ocr,
    SelectionMode   = SelectionMode.Accumulate,
    OcrFilter = new OcrFilterConfig
    {
        FilterType           = OcrFilterType.NumericOnly,
        MinConfidencePercent = 75,
        MinLength            = 4,
        MaxLength            = 20,
    }
});

CatturaScanner.Scan(activity, callback);

// OnResults() est déclenché quand l'utilisateur tape "TOUT ENVOYER"
public void OnResults(IList<CatturaResult> results)
{
    foreach (var r in results)
        Console.WriteLine($"OCR: {r.Value}  ({(int)(r.Confidence*100)}%)");
}

// Wrapper Task — await du résultat directement en MAUI
private async Task ScanAsync()
{
    var tcs = new TaskCompletionSource<IList<CatturaResult>>();

    CatturaScanner.Scan(
        Platform.CurrentActivity,
        new ScanCallback(
            onResult:    r  => tcs.TrySetResult(new[] { r }),
            onResults:   rs => tcs.TrySetResult(rs),
            onError:     e  => tcs.TrySetException(new Exception(e.Message)),
            onCancelled: () => tcs.TrySetCanceled()
        ));

    var results = await tcs.Task;
    ProcessResults(results);
}