QR CODE SCANNER AND GENERATER BY USING:- SCAN KIT

Accessing websites, images, and files using QR codes is widely used these days. These QR Codes are used for doing payments which is easy to use. You can see this feature in various payment apps such as Google Pay, Amazon Pay, and many more. In today’s article, we are going to see how to generate QR codes for certain links and QR code scanners for certain apps

First, we have declared My App() in run App in the main function. Then we have created State-less-Widget for My -App in which we have returned Material-App(). In this Material App() we have given the title of our App then declared the theme of our App as primary Swatch as indigo. Then we have given our first screen of or slider app in the home: Home-Page().

Declare State-full-Widget() for Home-Page:-

In State-full-Widget() return Scaffold() widget. In Scaffold() Widget in the body section, we have declared Container() having width and height. In that Container() we have given Column inside which we have given main-Axis-Alignment as center and Cross-Axis-Alignment as a stretch. After that we have given an Image as Network Image below that Image we have given rounded Flat-Button() having color, border-radius, and border side. On that Flat-Button we have given on-Pressed method which is used to navigate to the next screen Scan QR().

Navigating to Scan-QR() page:-

we have imported package bar-code-scan-fix. Then we have created State-Full-Widget for Scan-QR class. In that state we have declared String as qr- code result ‘Not yet Scanned’. After that in Scaffold() we have declared App bar with the title. In the body section, we have declared Column() wrapped with Container() and given main-Axis-Alignment as center and Cross-Axis-Alignment as a stretch. After that, we have declared two text widgets first text widget has declared for the given title. And the second text widget is used to declare the String which we have given. After that, we have given a Flat Button() and on its on Pressed method, we have given code Scanner which is used to scan QR code.

QR code scan application using Android Studio. The source code is also attached. Open Android Studio and create a new project. Give an application name, company domain, check Include java option if you wish to use java for coding the project, and click Next. Select the Android minimum SDK.

SCAN KIT:-

Use this in-app scanner and generator for 1D and 2D barcodes to equip your app for real-world usage.

Introduction of scan kit:-

1. Scan Kit scans, parses, and generates major 1D and 2D barcodes, helping you quickly build barcode scanning functions into your apps.
2. Scan Kit automatically detects, magnifies, and recognizes barcodes from a distance, and is also able to scan a very small barcode in the same way.
3. It works even in suboptimal situations, such as in dim light condition or when the barcode is reflective, dirty, blurry, or printed on a cylindrical surface.
4. This leads to a high scanning success rate, and an improved user experience .Scan Kit can be integrated into both Android and iOS apps. Android apps with Scan Kit integrated support barcode scanning in landscape mode.

Devices are supported to scan kit:-

1. Android:-Huawei phones and tablets, EMUI 3.0 or later.
2. iOS: iPhones.

devices version:-Non-Huawei phones, Android 4.4 or later.

device version:-iOS 9.0 or later.

Scanning QR-codes:-

Scan Kit supports 13 major barcode formats (listed as follows). If your app requires only some of the 13 formats, specify the desired formats in set format to speed up barcode scanning. Otherwise, all supported formats will be processed by default. Currently, the following formats are supported. More formats will be supported in the future.

• 1D QR code formats: EAN-8, EAN-13, UPC-A, UPC-E, QR Code, Code 39, Code 93, Code 128, and ITF-14.
• 2D QR code formats: QR Code, Data Matrix, PDF417, and Aztec.

Scan Kit can be called in multiple modes. Choose the one that suits your needs best. For details, please refer to overview (Android) or overview (iOS).

About SDK Dependencies:-

• The SDK of the latest version can be used only on devices running HMS Core (APK) 4.0.0.300 or later. If a user is using a device without HMS Core (APK) 4.0.0.300 or later, the user will be directed to install it when it is called by your app.
• After your integrated SDK is updated from SDK 3.0 or earlier to the latest version, the push token will change. In this case, you are advised to report the new token to your server in a timely manner.

New Features:-

SDK version for Android: com.huawei.hms:push:4.0.3.301

• Optimized the Push Kit UIs in App-Gallery Connect.
• Supported the topic subscription function for all EMUI versions.
• Supported complex styles (including the ringtone, breathing light, large text, small image on the right, app icon on the left, and badge) for displaying notification messages and notification message overwriting in EMUI 9.1.X.

Guide lines of app release:-

Before releasing your app, read the following for the review guidelines and FAQs you may need to know:

• app-gallery review guidelines.
• app review.

Conclusion:-

Uses multiple CV technologies to improve the scanning success rate and speed. Allows you to directly call the preset scanning screen or customize the UI and process based on open APIs. Supports mainstream code systems around the world. More code systems and scenarios will be supported later.