qr-code

问题 I have a laboratory analyzer that generates results in a .csv or .xlsx format, however right now I must manually type the results from the output into our result tracking software system manually because copy-paste doesn't work. I would like to write an R script that can translate the results from this .csv into the software program, and the best way I can think of is to generate the results as a barcode/QR code which I can then scan in to the software program. To do this, I need a tab

问题 I'm trying to draw QR barcodes in a PDF file using iTextSharp. If I'm using English text the barcodes are fine, they are decoded properly, but if I'm using Chinese text, the barcode is decoded as question marks. For example this character '测' (\u6D4B) is decoded as '?'. I tried all supported character sets, but none of them helped. What combination of parameters should I use for the QR barcode in iTextSharp in order to encode correctly Chinese text? 回答1: iText and iTextSharp apparently don't

问题 Im trying to implement 2FA with authy and using authy php library and authy API key to add users to authy, so that user can scan the QR code nd get my app authentication in phone. I did documentation as mentioned in that library github page. User data is saving successfully but im getting some random numeric secret key (which is generated for user by authy) secret to store in database, if i enter that secret in app it is showing secret key is invalid error, Checkout the screenshots below We

问题 Is there a Codeigniter library that can automatically generate a QR code with my website's logo in the center? 回答1: This library might help; it also includes some examples (updated in January 2012) - https://github.com/dwisetiyadi/CodeIgniter-PHP-QR-Code 来源： https://stackoverflow.com/questions/8686802/is-there-a-codeigniter-library-that-can-automatically-generate-a-qr-code-with-a

问题 I have an android app which on local WiFi and doesn't require an internet connection so I am looking for a solution which can scan QR codes without requiring Google Play Services as no internet connection is there so I do not want to update Google Play Services. Currently, I am doing it by using Google Vision API but somehow(if possible) I want to remove this dependency. 回答1: Below is the link for the same : QR Code Reader without requiring google play services 来源： https://stackoverflow.com

问题 I just started using NativeScript and need to be able to read QR codes. I downloaded the BarcodeScanner plugin for NativeScript (I am using JavaScript, not TypeScript) and I can't figure out how to use it. I still can not find any useful or informative tutorials. Does anyone know any good tutorials or can anyone tell me how to use it (with an example). Thanks in advance! 回答1: You could review plugins repo demo project, where has been shown how to use nativescript-barcodescanner . Regarding to

问题 I am looking for a library or method to decode a QR Code (or potentially another form of 2d barcode) and to be able to actually determine the camera position and orientation. This seems like it should be doable, but I am not entirely sure. Does anyone know what the best route for this is? Or if it is even possible? 回答1: zxing is the open-source Google-hosted Java library for 2d barcodes including QR. see com.google.zxing.ResultMetadataType.ORIENTATION (optional metadata returned in a

问题 I have a png with several qr codes which basically looks like this To decode the qr codes I use zbarlight . from PIL import Image import zbarlight file_path = './tests/qr_codes.png' with open(file_path, 'rb') as image_file: image = Image.open(image_file) image.load() codes = zbarlight.scan_codes(['qrcode'], image) print('QR codes: %s' % codes) My goal is to decode the qr codes FROM LEFT TO RIGHT, so the list should like like this: url1, url2, url3, url4, url5, ulr6. Problem: The result (list)

问题 Normally, I use maven in my project but because of some migration problems I have to (temporally) download jars. I want to use the following code: import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import net.glxn.qrgen.QRCode; import net.glxn.qrgen.image.ImageType; public class Main { public static void main(String[] args) { ByteArrayOutputStream out = QRCode.from("Hello World") .to

问题 We have implemented a QRCode reading function in iOS using the AVCaptureSession class, as described nicely here: https://github.com/HEmobile/ScanBarCode/tree/master/ScanBarCodes https://developer.apple.com/library/ios/documentation/AVFoundation/Reference/AVCaptureSession_Class/ But one thing we notice... the QRCode has to be aligned exactly vertically or horizontally. Oblique angles such as 45 degress does not trigger a scan. This issue doesn't really google, which is surprising. Our