Best QR Scanner for Android: Developer Guide

QR codes have become an integral part of our daily lives, seamlessly connecting the physical and digital worlds. Whether you're exploring a new city, shopping online, or attending an event, QR codes simplify the process of accessing information.

To harness the power of these codes, having a reliable QR code scanner on your Android device is crucial. In this article, we'll explore some of the best QR code scanners for Android for scanning QR codes that offer user-friendly interfaces, robust features, and efficient performance.

Google Lens

Google Lens is a versatile tool that can scan QR codes. When encountering a QR code, open Google Lens and point your camera at it. Google Lens will recognize the QR code and provide relevant information or actions associated with it.

Whether it’s a link to a website, contact details, or any other encoded data, Google Lens will help you decode it effortlessly! You can access Google Lens through various Google apps, including the Google app, Google Camera, and Google Photos.

QR & Barcode Scanner by Gamma Play

QR & Barcode Scanner by Gamma Play is a powerful app designed for Android devices that allows you to swiftly scan and decode QR codes and barcodes.

Here are some key features of this handy tool. The app excels in recognizing various code types, including text, URLs, ISBNs for books, product codes, contact information, calendar events, email addresses, Wi-Fi network details, and more.

With automatic decoding, the app swiftly translates scanned information into relevant options, allowing users to take immediate actions within the app.

The app's additional features, such as flashlight support for low-light conditions, zoom functionality for distant scanning, and the ability to compare product prices by scanning barcodes, make it a comprehensive and essential tool for Android users.

QR scanner Barcode scanner by Simple Design Ltd

QR Scanner: Barcode Scanner by Simple Design Ltd is an Android app that allows you to swiftly scan and decode QR codes and barcodes.

The app can identify multiple barcodes simultaneously, supporting a wide range of formats, including EAN-13, EAN-8, UPC-A, UPC-E, Code-39, Code-93, Code-128, ITF, Codabar for 1D barcodes, and QR Code, Data Matrix, PDF-417, AZTEC for 2D barcodes. The app starts scanning automatically when pointed at the barcode or QR code, eliminating the need for manual button presses.

QR Code Scanner & Scanner App by QR Code Scanner

QR Code Scanner & Scanner App by QR Code Scanner is a comprehensive and user-friendly app available for Android devices. It combines several essential features related to QR codes and barcodes, making it an essential tool for everyday use.

You can gain instant access to information encoded in QR codes or barcodes with its quick and effortless scanning functionality, catering to both casual and professional use. The app goes beyond scanning, offering a QR code generator for creating codes related to websites, contact information, Wi-Fi networks, and more.

Additional features, including a scan history, the ability to scan from gallery images, and a price scanner for checking promotions and discounts, enhance the app's overall utility.

QR & Barcode Reader by TeaCapps

QR & Barcode Reader by TeaCapps is a modern QR code scanner and barcode scanner app for Android devices. It offers a range of features to enhance your scanning experience. It efficiently scans QR codes and barcodes, supporting a variety of formats including QR codes, Data Matrix, UPC, EAN, Code 39, and more.

The app prioritizes security with Google Safe Browsing technology and ensures shorter loading times. It maintains minimal permissions, allowing image scans without storage access and sharing contact data without address book access.

Additional features include flashlight support, QR code creation, customizable search options, and exportable scan history.

We can create our own QR Code Reader and QR Code Scanner app by using IronQR Library in C# .NET.

Introducing IronQR

IronQR is a powerful C# QR Code library for .NET applications, featuring advanced machine learning for accurate QR code detection. Developers can easily read QR codes from various image formats and choose between machine learning or slim mode.

The library supports fault tolerance, and customizable error correction, and is cross-platform, making it an ideal choice for projects seeking straightforward machine learning-infused QR code functionality in their .NET applications.

IronQR is an excellent choice for accuracy, ease of use, and speed in QR code and barcode-related tasks across diverse applications, from inventory systems to e-commerce platforms.

Installing IronQR

To install IronQR using the Package Manager Console in Visual Studio, follow these steps:

• Open Visual Studio: Launch Visual Studio and open the project in which you want to install IronQR.
• Open Package Manager Console: Go to "View" in the top menu, hover over "Other Windows," and select "Package Manager Console." This will open the Package Manager Console at the bottom of the Visual Studio window.
• Run Install-Package Command: In the Package Manager Console, type the following command and press Enter:

Install-Package IronQR

This command will download and install the IronQR package from the NuGet Gallery.

Write code for QR Code Reader

We will read the following QR code from our code.

The following code will read the QR Code image and print the result on Console.

var inputBmp = AnyBitmap.FromFile("wiwkiQR.png");
  // Load the asset into QRImageInput
  QRImageInput imageInput = new QRImageInput(inputBmp);
  // Create a QR Reader object
  QRReader reader = new QRReader();
  // Read the Input an get all embedded QR Codes
  IEnumerable<QRResult> results = reader.Read(imageInput);
  foreach (QRResult result in results)
  {
      Console.WriteLine(result.Value);
  }

var inputBmp = AnyBitmap.FromFile("wiwkiQR.png");
  // Load the asset into QRImageInput
  QRImageInput imageInput = new QRImageInput(inputBmp);
  // Create a QR Reader object
  QRReader reader = new QRReader();
  // Read the Input an get all embedded QR Codes
  IEnumerable<QRResult> results = reader.Read(imageInput);
  foreach (QRResult result in results)
  {
      Console.WriteLine(result.Value);
  }

Dim inputBmp = AnyBitmap.FromFile("wiwkiQR.png")
  ' Load the asset into QRImageInput
  Dim imageInput As New QRImageInput(inputBmp)
  ' Create a QR Reader object
  Dim reader As New QRReader()
  ' Read the Input an get all embedded QR Codes
  Dim results As IEnumerable(Of QRResult) = reader.Read(imageInput)
  For Each result As QRResult In results
	  Console.WriteLine(result.Value)
  Next result

The above C# code, utilizing the IronQR library, reads QR codes from an image file named "wiwkiQR.png." It begins by loading the image into the inputBmp variable using the IronQR class AnyBitmap.FromFile.

Subsequently, a QRReader object is created to facilitate QR code extraction. The reader.Read method processes the image, and the resulting QR code values are then printed to the console using a foreach loop. This concise piece of code demonstrates the simplicity of integrating IronQR for QR code reading in C# applications.

Output

In this way, we can easily create our own QR Code Scanner apps very easily. We can add as many features as required to create the best QR Code app. IronQR makes QR Code Scanning very easy.

Conclusion

In conclusion, QR codes have become integral to our daily activities, simplifying tasks like shopping, exploring new places, and attending events. The highlighted QR Code Reader apps offer diverse features for efficient QR code scanning.

For developers, IronQR provides a robust solution for creating and reading QR codes in .NET applications, offering simplicity and customization. Whether you're a user seeking a reliable Android QR code scanner or a developer-enhancing application, these tools offer user-friendly experiences, making QR code-related tasks straightforward and accessible.

IronQR, developed by Iron Software, is a powerful C# QR Code Library that prioritizes accuracy, ease of use, speed, and provides a Machine Learning algorithm. It’s the leading solution for reading and creating QR codes and barcodes in .NET projects.

Whether you need to read, write, or style QR codes, IronQR provides a user-friendly API that allows developers to integrate this functionality into their projects swiftly.

It provides a free trial with three licensing options catering to different project sizes, each offering benefits like a 30-day money-back guarantee and perpetual licenses. Users can choose additional features like redistribution coverage and support renewals.