qr-code

问题 I am using qrcode.js for generating qrcode. I want to generate random QR code every time I click into add new tab instead of add new qr code. I created a code for a random number but when I try to add onclick function it add new not to random it. JSFIDDLE: https://jsfiddle.net/aice09/L8pp9336/ GITHUB: https://github.com/Ailyn09/project102/blob/master/qrcode.html CODEPEN: https://codepen.io/aice09/pen/Ogqajr $('#lithird').click(function() { var qrcode = new QRCode("qrcode"); function makeCode(

问题 I am using pyqrcode module in python and generating QR code with it. How to put the logo in the center of that QR code. The code looks like this import pyqrcode data = "Hello World!!" number = pyqrcode.create(data) number.png('xyz.png', scale=int(scale)) with open('xyz.png', "rb") as f: return HttpResponse(f.read(), content_type="image/png") Or is there any another way of doing this instead of pyqrcode? 回答1: If you use a high-redundancy algorithm (eg H), you can damage the generated QRCode up

问题 I am using pyqrcode module in python and generating QR code with it. How to put the logo in the center of that QR code. The code looks like this import pyqrcode data = "Hello World!!" number = pyqrcode.create(data) number.png('xyz.png', scale=int(scale)) with open('xyz.png', "rb") as f: return HttpResponse(f.read(), content_type="image/png") Or is there any another way of doing this instead of pyqrcode? 回答1: If you use a high-redundancy algorithm (eg H), you can damage the generated QRCode up

问题 I am using pyqrcode module in python and generating QR code with it. How to put the logo in the center of that QR code. The code looks like this import pyqrcode data = "Hello World!!" number = pyqrcode.create(data) number.png('xyz.png', scale=int(scale)) with open('xyz.png', "rb") as f: return HttpResponse(f.read(), content_type="image/png") Or is there any another way of doing this instead of pyqrcode? 回答1: If you use a high-redundancy algorithm (eg H), you can damage the generated QRCode up

问题 I want to build a PWA based on flutter web which relies on scanning a QR-Code and accessing the user's current position. From my point of knowledge for both functionalities there are currently no packages available. However for getting the user's location there is a stackoverflow thread (Get User's Location for flutter Web) providing a solution. So I'm wondering if there is any chance that there is a similar solution for the QR-Scanning issue? Sadly, I'm not very familiar with web and

问题 I am currently working on QR code generator. I would like to generate a QR code which will expire after an hour. Should I have to make the QR code to link to a website with php script? Or I could make it to set expired time at the QR code? Thanks for help. 回答1: A QR code is, in itself, simply a text string that can be read by a camera. Text strings, in themselves, don't expire. So, your QR code will need to contain some sort of expiring code. For example, you could put this kind of string

问题 I am currently working on QR code generator. I would like to generate a QR code which will expire after an hour. Should I have to make the QR code to link to a website with php script? Or I could make it to set expired time at the QR code? Thanks for help. 回答1: A QR code is, in itself, simply a text string that can be read by a camera. Text strings, in themselves, don't expire. So, your QR code will need to contain some sort of expiring code. For example, you could put this kind of string

问题 I'm using qr_flutter to create QrImage. It's ok but I would like to convert QrImage into image in order to create a PDF file to print on the printer. Please kindly help! QrImage( data: qrString, size: 300.0, version: 10, backgroundColor: Colors.white, ), 回答1: Use a RepaintBoundary widget with a key to export the widget to a a b64 string which then you can export as an image. Example: Future<Uint8List> _getWidgetImage() async { try { RenderRepaintBoundary boundary = _renderObjectKey

问题 I'm using qr_flutter to create QrImage. It's ok but I would like to convert QrImage into image in order to create a PDF file to print on the printer. Please kindly help! QrImage( data: qrString, size: 300.0, version: 10, backgroundColor: Colors.white, ), 回答1: Use a RepaintBoundary widget with a key to export the widget to a a b64 string which then you can export as an image. Example: Future<Uint8List> _getWidgetImage() async { try { RenderRepaintBoundary boundary = _renderObjectKey

问题 So, I'm building a test project on java using Selenium, with gradle. Right now I need to scan a QR Code from a previously taken screenshot. I looked around how to do it, and the ZXing scanner code seems like the best suggestion. (Please let me know if it isn't.) My problem is, from the moment I add the 'com.google.zxing:zxingorg:3.3.1' dependency to my build.gradle file, even if I don't write any additional code with it (I've tried with and without), the web driver stops working, and I get