QrReader | Android QR-code reader based with ZXing core | QRCode Processing library
kandi X-RAY | QrReader Summary
kandi X-RAY | QrReader Summary
Android QR-code reader based with ZXing core.
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Top functions reviewed by kandi - BETA
- Draws the result bitmap
- Get the framing rectangle in preview
- Get screen resolution
- Calculates the framing rect of the screen
- Find the desired dimension in range
- Determine the best size value for the given device
- Resume camera
- Set the camera
- Stops camera preview
- Add a new result point
- Start auto focus
- Called when the view is created
- Get row
- Initializes the view
- Return the original matrix
- Called when the camera is created
- Called when a video frame is received
QrReader Key Features
QrReader Examples and Code Snippets
Community Discussions
Trending Discussions on QrReader
QUESTION
I'm following a tutorial to get a qr reader working in python, but I'm running into the following error while running it:
Exception has occurred: error OpenCV(4.5.4) :-1: error: (-5:Bad argument) in function 'line' Overload resolution failed:
- Can't parse 'pt1'. Sequence item with index 0 has a wrong type
- Can't parse 'pt1'. Sequence item with index 0 has a wrong type File "C:\Users\me\project\qrreader.py", line 18, in cv2.line(img, tuple(bbox[i][0]), tuple(bbox[(i+1) % len(bbox)][0]), color=(255,
The script is as follows
...ANSWER
Answered 2021-Nov-23 at 13:25Your bbox is a 3-dimensional array with shape (1,4,2). I suggest you simplify it by reshaping it to a 2D array. To cast it to int, numpy arrays have the astype method. Finally, a tuple is still required by cv2.line, so keep that as-is.
Here is one possible solution chunk:
QUESTION
I wanted to use QrReader to scan file according to [https://github.com/Musawirkhann/react_qrcode_generation_scanner
It's writtern by react. But I want to use by tsx.
And there's an error Object is possibly 'null'. TS2531 in qrRef.current.openImageDialog()
ANSWER
Answered 2021-Aug-05 at 04:55You can use optional chaining for null check:
QUESTION
I have a Blazor Webassembly PWA Project called "QrReader.Client" and a Project called "QrReader.Server" which was generated after checking the checkbox "ASP.NET Core hosted". In my "QrReader.Client" Project i used a js library to read QR codes which works fine. Now i want to implement a solution which creates and writes a textfile to my FTP Server after a succesfull scan. I already have a "UploadToFtp()" method for that which works fine but its the first time im working with an API.
So where should my "UploadToFtp()" method be located and how can i call this method after a succesfull Qr scan from the javascript or razor? I don't feel like this method belongs to an API Controller...
...ANSWER
Answered 2021-Aug-08 at 07:13... a solution which creates and writes a textfile to my FTP Server after a succesfull scan.
Why would you use FTP? It's an old protocol and not supported in a Browser app.
The result of a scan can be Posted to your API (QrReader.Server) as Text or as a DTO.
If you need a starter, look at how FetchData.razor uses GetAsJsonAsync to get its forecasts. You will need PostAsJsonAsync to go in the other direction.
When you really need FTP you can then upload it from your Server with, FtpWebRequest.
QUESTION
I'm practicing on how to generate a QR code based on the userID of the current user. And once the QR code of the specific user is scanned, it will display the account details of that user. I'm just practicing so I could be familiar with how this process works.
...ANSWER
Answered 2021-Aug-01 at 06:56The auth.currentUser is null when there is no user logged in. Before generating the QR code, you should check if the user is logged in.
QUESTION
Problem : So I'm using this npm package react-qr-scanner to scan QR codes in my PWA. Now this is a react based package. The react component(just an example) is like:
...ANSWER
Answered 2021-Apr-18 at 16:04If you want to extend react-qr-scanner you should fork it on github, you could import in locally to test and then publish it if you like, you could use as a private repo too
QUESTION
I am deploying a python flask app to heroku which uses Zxing to read qr codes(scan them) and give out the data on them, however Zxing requires Java on the heroku environment.
Zxing : https://github.com/dlenski/python-zxing
Error with Zxing
...ANSWER
Answered 2020-Aug-09 at 12:50I have managed to solve my error by adding the buildpack
QUESTION
I would like to insert data from pages/index.js into mysql database. A mysql connection in routes/routes.js, i have built ins function to call what i want
Structure
- components
- pages
- index.js
- routes
- routes.js
- server.js
- package.json
Fail with error:
Module not found: Can't resolve 'fs' in '.../node_modules/destroy'
pages/index.js
ANSWER
Answered 2020-Feb-01 at 23:14try install the module fs. like yarn add fs something like.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install QrReader
You can use QrReader 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 QrReader 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 .
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