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Questions tagged [zxing]

ZXing (pronounced "zebra crossing") is an open-source, multi-format 1D/2D barcode image processing library implemented in Java, with ports to other languages. Its focus is on using the built-in camera on mobile phones to scan and decode barcodes on the device, without communicating with a server, though the library also supports use on a server.

Questions with this tag concern the open-source barcode encoding and decoding library ZXing.

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How to create a BinaryBitmap from ImageProxy?

The Mlkit barcode scanning library has an issue with scanning Code 39 barcodes. So I have to replace it with the zxing library that seems to have no issues. However CameraX is giving me back an ImageProxy object, and the zxing MultiFormatReader…
Elyes Mansour
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Error: Zxing functions does not exists. React QR Scanning App

I am trying add a qr code scanning functionality to my react app. I am using @zxing(https://www.npmjs.com/package/@zxing/browser & https://www.npmjs.com/package/@zxing/library) packages. Following the readme, here's my js code. I have hosted the…
Aryan Arora
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Can I check how many errors found in QRcode while decoding?

Since I am doing a research on aesthetic QRcode and I want to know how much that I distorted on the original QR code. zxing is a toolbox that can decode QRcode. After reading its documentation, I found that there exists…
Steven Wu
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Zxing library problem configure zoom x0.5 on iphone 13

As part of a react web app, we use the Zxing library to perform barcode and qr code scans. However, we encounter a problem with the iphone 13 which sets the zoom to x1 by default, which results in a blurred image when we get closer to the elements…
Damos
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zxing invoking unepexected warning in browser console

The browser console is reporting immediately after activating the camera on the device Started continous decode from camera with id BGOlLyxMumeB0YGZoWhjlsR1atGM5DEXtxqIrhEmoqk= It was not possible to play the video. The camera is however running…
Jerome
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How to increase DPI for QR code for Zxing on BIRT report

We had implemented Zxing api for BIRT report to show QR code,its working fine, But the DPI resolution is not visible properly, Is there a way we can show the QR code in high resolution? Please provide the options? we tried var matrix =…
SaiCharan
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Background of ZXingScannerView in Xamarin.Forms (Android) is opaque

When a ZXingScannerPage is shown with the following code/configuration this results in a view with an opaque background (see first screenshot below) and it is impossible to scan barcodes. The default background color for the pages of the app is set…
Niels R.
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ZXing .net MAUI: How to create border around barcode scanner view?

I am new to .net MAUI and want to create barcode scanner view using ZXing library I want to put some custom border around scanning view (camera capture screen). How can I create these border something like in this picture? Which layout, controls do…
Summer
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Android Studio - Scan two barcodes at the same time

I need help. I need to scan two barcodes at the same time. For now I can take one code at a time. I am desperate, I can't find a guide anywhere. My code: public void onclick_scan(View view){ IntentIntegrator intentIntegrator = new…
Esabot
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QR code scanning with Zxing library differs a lot between different phones

We have integrated me.dm7.barcodescanner:zxing into our app and use the ZXingScannerView to scan QR-codes on some physical devices. Our issue is that the performance is extremely different on different phones. Some of them register the QR-code…
poppe
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saving default camera for zxing

Devices now have multiple cameras. The goal is to allow a user to have a preferred camera be saved as the default camera. I somehow expected that Andriod would allow such an action, but have failed to find any such setting (Android 9). Another way…
Jerome
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ZXing not scanning barcodes on ios

I have a problem building Xamarin Forms app. We need to implement barcode scanner in it where I found several tutorials how to integrate ZXing.Net.Mobile.Platforms which I installed for all project via Nuget - I tried latest stable version (2.4.1)…
Denis Fajertag
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ZXing array range error when scanning PDF417 with metadata generated with iText 2.1.7

I'm using iText 2.1.7 to generate sample segmented PDF417 barcode with the following code: Document document = new Document(); ByteArrayOutputStream baos = new ByteArrayOutputStream(); PdfWriter pdfWriter = PdfWriter.getInstance(document,…
Danubian Sailor
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An Android mouse cursor is displayed when scanning a barcode

I have an application for android. The problem: while scanning a barcode the mouse cursor is visible. The problem occurred when I install the app in 'rockchip imachin' version 2020, but when I install the app in 'rockchip imachin' version 2021 the…
רחל ברוורמן
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zxing - problems reading qr code in portrait / landscape

In Android Studio Emulator (Pixel 4, API30), zxing 3.5.0 recognizes qr code in portrait orientation, but not in landscape orientation. On my hardware it behaves just the opposite: landscape works OK, but not portrait. What can I do? portrait…
m_OO_m
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