qrcode | QR Code decoding library written in Java | QRCode Processing library

by yanbe Java Version: Current License: No License

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | qrcode Summary

qrcode is a Java library typically used in Utilities, QRCode Processing applications. qrcode has no bugs, it has no vulnerabilities and it has low support. However qrcode build file is not available. You can download it from GitHub.

QR Code decoding library written in Java

Support

Quality

Security

License

Reuse

Support

qrcode has a low active ecosystem.

It has 63 star(s) with 16 fork(s). There are 12 watchers for this library.

It had no major release in the last 6 months.

qrcode has no issues reported. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of qrcode is current.

Quality

qrcode has no bugs reported.

Security

qrcode has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

qrcode does not have a standard license declared.

Check the repository for any license declaration and review the terms closely.

Without a license, all rights are reserved, and you cannot use the library in your applications.

Reuse

qrcode releases are not available. You will need to build from source code and install.

qrcode has no build file. You will be need to create the build yourself to build the component from source.

Top functions reviewed by kandi - BETA

kandi has reviewed qrcode and discovered the below as its top functions. This is intended to give you an instant insight into qrcode implemented functionality, and help decide if they suit your requirements.

This method initializes the grid
Add a random error
Detects the error bit position
Reads the symbol information
Decodes the given image
Get the sample sampling grid
Decodes data blocks
Get the data as string
Get an 8 bit string from the input array
Starts the app
Create the encode Gx
Draw an array of points
Draw lines with given color
Draw the cross
Called when the user selects a file
Correct the data
Print a message
Checks the encoding of the given tracks
Initialize the components
Runs the image
Draws a black matrix
Decode image decoder
Start processing the camera
Set the JPEG quality of a player
Draw a polygon
Draw a matrix

Get all kandi verified functions for this library.

qrcode Key Features

No Key Features are available at this moment for qrcode.

qrcode Examples and Code Snippets

No Code Snippets are available at this moment for qrcode.

Community Discussions

Trending Discussions on qrcode

ReactJS update UI or call method from different class

How to transfer data(QR Code) from system to Paytm Dynamic QR device

App crashing when i try to change activity Intent

Data pass from AJAX call to Controller but getting null values

How to unit test, actionresult with using mysql in ASP.NET Core

Why does my video feed hang after a while (Not Responding) on Python open cv?

I am trying to convert byte[] to base64 but getting error

invalid byte sequence for encoding "UTF8": 0x89 PostgreSQL Laravel 8

How to get an image response in OpenApi Swagger 3.0

How to fulfill the condition correctly "If" in javascript

QUESTION

ReactJS update UI or call method from different class

Asked 2021-Jun-13 at 00:32

I have two classes, App and qrCode. The qrCode class returns a image of the qrcode based on the address provided in that classes state. The app class displays the qrcode component. In the method getSessionID, the app makes a request to the server, then should call updateQrCode to update the qrcode that is being shown.

How can I call the method updateQrCode from App.js? I can't instantiate a new QrCode, because that is not the instance that is being displayed.

App.js:

...

ANSWER

Answered 2021-Jun-13 at 00:30

App.js is the parent component and QrCode.js is the child component. From parent to child you can pass by props directly.

In App.js, create a state object and update it on receiving fetch response. React re-renders component and its children whenever state object changes.

App.js

Source https://stackoverflow.com/questions/67953919

QUESTION

How to transfer data(QR Code) from system to Paytm Dynamic QR device

Asked 2021-Jun-11 at 14:43

As we know, Paytm has launched a Dynamic QR device to display invoice/bill QR Code image.

I have to integrate this device with a billing system(POS), where I have to send QRCode data to this device.

I have to integrate it using C#.NET

Note:- As per the device guidelines, we can transfer data from system to device using USB Port(the serial port communication) Reference

...

ANSWER

Answered 2021-Apr-10 at 06:39

I got the solution after a discussion with Paytm Development Team. They have shared an SDK along with an API that is used to transfer data from POS(PC) to the Paytm Dynamic QR display device.

This SKD has basically main three methods:

Show Home Screen on display
Show QRCode on display
Show Payment Success message on display

Source https://stackoverflow.com/questions/66649004

QUESTION

App crashing when i try to change activity Intent

Asked 2021-Jun-07 at 07:23

I've been trying to fix this for weeks but failed, when I click on login (indicated with the id "lin") to open a new activity the app crash, i don't know if it's a problem with the Intent or something else, here is the code. The manifest should be ok so I think it's a problem in the MainActivity with Intent ab. The other activity is called Qrcode. I tried to change appcompatactivty to activity but didn't work, i don't really know what to do.

Edit: I posted the code of the qrcode activity, i got it from the answers of this question : Android, How to read QR code in my application?, only for educational purpose of course.

Edit 2: logcat posted, sorry for any issues with asking this question, it's the first question i ask here.

Logcat

...

ANSWER

Answered 2021-Jun-03 at 17:42

ur code in MainActivity seems ok and I think don't have any problem. In my opinion your Qrcode Activity has some bugs in it, like onCreate method, you should see the Logcat logs in android Studio, btw u can attach the Qrcode activity codes here, it is really helpful. another way to find the bug is by using the try-catch in your code and log the exception

Source https://stackoverflow.com/questions/67826053

QUESTION

Data pass from AJAX call to Controller but getting null values

Asked 2021-Jun-06 at 14:05

From below code i want to send data to my controller but when i add debug point to my controller function then receiving all the values null. I dont to replace datatype is text to json.

...

ANSWER

Answered 2021-Jun-06 at 14:05

For one, make your life easier by changing your parameter list in c# to a single class (in my example DTO just means Data Transfer Object):

Source https://stackoverflow.com/questions/67859733

QUESTION

How to unit test, actionresult with using mysql in ASP.NET Core

Asked 2021-Jun-05 at 06:05

How to test this code with using action result with mysql?

...

ANSWER

Answered 2021-Jun-05 at 06:05

Your test method should look like this.

Source https://stackoverflow.com/questions/67846504

QUESTION

Why does my video feed hang after a while (Not Responding) on Python open cv?

Asked 2021-Jun-02 at 09:35

I'm currently trying to write a programme that can open a live video feed (webcam) and identify QR or Barcodes live as they appear under the camera but the video feed always hangs after a while. I am running this on python and I have imported the following libraries:

qrcode
csv
cv2
numpy
from pyzbar.pyzbar import decode

Here is the function that I call in the console:

...

ANSWER

Answered 2021-Jun-02 at 09:35

success, img = cap.read()

Source https://stackoverflow.com/questions/67782204

QUESTION

I am trying to convert byte[] to base64 but getting error

Asked 2021-Jun-01 at 18:56

I want to create QR Code from user data. I have using below library for creating QR Code.

...

ANSWER

Answered 2021-Jun-01 at 18:56

The base64 value you provided in your question is malformed, my recommendation is to not use Json Serialization for this Api response effort.

Try using Convert.ToBase64String

Ensure the method returns string
and the jQuery request accepts/expects text for dataType response.

Diff in your Api Endpoint

Source https://stackoverflow.com/questions/67792167

QUESTION

invalid byte sequence for encoding "UTF8": 0x89 PostgreSQL Laravel 8

Asked 2021-Jun-01 at 11:22

I am working in Laravel 8 on a windows 10 machine.
Full error:

...

ANSWER

Answered 2021-Jun-01 at 11:22

Change

Source https://stackoverflow.com/questions/67780089

QUESTION

How to get an image response in OpenApi Swagger 3.0

Asked 2021-May-31 at 08:11

I have an endpoint which returns an image in response and I would like the swagger documentation to return and display the image within the framework. I've looked at the documentation here and here and tried all three examples all which have no success. Am I trying the impossible?

Here is my example

...

ANSWER

Answered 2021-May-31 at 08:11

Change application/png to image/png. Other than that, your definition is correct.

Source https://stackoverflow.com/questions/67768345

QUESTION

How to fulfill the condition correctly "If" in javascript

Asked 2021-May-29 at 14:05

            function UserCheckId() {
                $.ajax({
                    type: "POST",
                    dataType: "json",
                    url: "/Home/SomeAction",
                    data: { qrcode: scannedQR[txt] },
                    dataType: 'json',
                    success: function (data) {
                            if (data = "Storekeeper") {
                                document.location.replace("/Storekeeper.aspx");
                            }
                            else {
                                alert("Error");
                            }
                    }
                });

...

ANSWER

Answered 2021-May-29 at 14:05

To check equality in javascript use strict equality operator === which will check both type and value. Also always normalize (like trim, toLowerCase etc) before any comparison operation

Source https://stackoverflow.com/questions/67752123

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install qrcode

You can download it from GitHub.
You can use qrcode like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the qrcode component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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