qr-code

问题 I'm actually trying to put a 3D Object on QRCode with ARKit For that I use a AVCaptureDevice to detect a QRCode and establish the area of the QRCode that gives me a CGRect . Then, I make a hitTest on every point of the CGRect to get the average 3D coordinates like so : positionGiven = SCNVector3(0, 0, 0) for column in Int(qrZone.origin.x)...2*Int(qrZone.origin.x + qrZone.width) { for row in Int(qrZone.origin.y)...2*Int(qrZone.origin.y + qrZone.height) { for result in sceneView.hitTest(CGPoint

问题 I am trying to make an app which reads QR images and get the data from the image. I am using the latest version of the google machine learning kit for scan barcodes and following the documentation about this https://developers.google.com/ml-kit/vision/barcode-scanning/android. However, at the moment that I run the app, I am getting the following crash: Image error with QR scanner App I have no idea what's going on with this due I a new with this kind of functionality. This is the code that I

问题 I am trying to make an app which reads QR images and get the data from the image. I am using the latest version of the google machine learning kit for scan barcodes and following the documentation about this https://developers.google.com/ml-kit/vision/barcode-scanning/android. However, at the moment that I run the app, I am getting the following crash: Image error with QR scanner App I have no idea what's going on with this due I a new with this kind of functionality. This is the code that I

问题 I'm developing an inventory system for my father's company and on of its requisites is to be able to use an external Barcode/QR Code scanner. I've developed everything using the camera as well, but I really need to use the scanner whithout showing the keyboard. Do any of you guys know if it's possible? if not, can it be done in any other way? 回答1: There is a property called showSoftInputOnFocus in newer react-native versions. Setting this to false keeps the keyboard hidden. <TextInput

问题 I'm developing an inventory system for my father's company and on of its requisites is to be able to use an external Barcode/QR Code scanner. I've developed everything using the camera as well, but I really need to use the scanner whithout showing the keyboard. Do any of you guys know if it's possible? if not, can it be done in any other way? 回答1: There is a property called showSoftInputOnFocus in newer react-native versions. Setting this to false keeps the keyboard hidden. <TextInput

问题 My Java program needs to send a binary payload via QR Code, but I can't get it to work. I have tried several QR Code libraries and many approaches, but all seem to have this problem. My current implementation uses ZXING. The problem is that all the Java libraries I've tried seem to be focused on String payloads, and do not provide support for binary data. The common suggested solution to this is to encode the binary data as Base64. However, my data is already near the size limit of QR Codes.

问题 Is there a way to get the background of generated qr codes transparent when using phpqrcode? I am generating a PNG to disk. I found this but I think it is way outdated: The line suggested in that forum is ImageColorTransparent($target_image, $col); however it is not clear to me where it should go, if it is even meant to work with this current version of the code. <?php /* * PHP QR Code encoder * * Image output of code using GD2 * * PHP QR Code is distributed under LGPL 3 * Copyright (C) 2010

问题 Is there a way to get the background of generated qr codes transparent when using phpqrcode? I am generating a PNG to disk. I found this but I think it is way outdated: The line suggested in that forum is ImageColorTransparent($target_image, $col); however it is not clear to me where it should go, if it is even meant to work with this current version of the code. <?php /* * PHP QR Code encoder * * Image output of code using GD2 * * PHP QR Code is distributed under LGPL 3 * Copyright (C) 2010

来源： https://stackoverflow.com/questions/36554769/generate-qr-code-from-vcf-card-business-card-in-c-sharp-windows-phone-8-1

来源： https://stackoverflow.com/questions/36554769/generate-qr-code-from-vcf-card-business-card-in-c-sharp-windows-phone-8-1