HOW TO: Extract the Data from a PDF417 AAMVA Barcode using Xamarin

#1 Posted : Friday, January 10, 2020 5:47:17 PM(UTC)

Matthew Bresson

Groups: Registered, Tech Support, Administrators
Posts: 105

Was thanked: 3 time(s) in 3 post(s)

Attached is a simple Xamarin.Forms application that shows how to parse the data in a PDF417 barcode that meets the AAMVA specification.

Here are the relevant code snippets:

Code:


   <StackLayout>
      <leadtools:CameraView x:Name="leadCamera" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"></leadtools:CameraView>
      <Button x:Name="liveCapture" Text="Start Live Capture" Clicked="liveCapture_Clicked"/>
   </StackLayout>

Code:


      private void liveCapture_Clicked(object sender, EventArgs e)
      {
         leadCamera.FrameReceived += LeadCamera_FrameReceived;
         leadCamera.Camera.FocusMode = FocusMode.Continuous;
         leadCamera.Camera.CaptureQuality = CaptureQuality.High;
      }

Code:


      private void LeadCamera_FrameReceived(FrameHandlerEventArgs e)
      {
         var data = barcodeEngine.Reader.ReadBarcode(e.Image, LeadRect.Empty, BarcodeSymbology.PDF417);

         if (e.Image != null && data.Value != null)
         {
            if (data.Symbology == BarcodeSymbology.PDF417)
            {
               AAMVAID id = BarcodeData.ParseAAMVAData(data.GetData(), false);
               if (id != null)
               {
                  leadCamera.FrameReceived -= LeadCamera_FrameReceived;
                  Device.BeginInvokeOnMainThread(() =>
                  {
                     DisplayAlert("AAMVA PDF417 Barcode Found!",
                        $"Issuer Identification Number: {id.IssuerIdentificationNumber}\n" +
                        $"First Name {id.FirstName.Value}\n" +
                        $"Last Name {id.LastName.Value}\n" +
                        $"Over 21? {id.Over21}"
                        , "OK");
                  });
               }
            }
         }
      }

Do Note: This particular sample application is written specifically for Android devices in Xamarin.Forms.

File Attachment(s):

AAMVAIDXamDemo.zip (1,776kb) downloaded 66 time(s).

Edited by user Thursday, February 13, 2020 9:43:58 AM(UTC) | Reason: Not specified

Matt Bresson
Developer Support Engineer
LEAD Technologies, Inc.


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HOW TO: Extract the Data from a PDF417 AAMVA Barcode using Xamarin