qr-code

Rails 4: Getting QRCode to display in email via action mailer

由 假装没事ソ 提交于 2019-12-08 04:28:36
问题 my problem is to get my QRCode to display in the email sent via action mailer in rails. I am currently using the gem 'rqrcode_png' I have read through some guides and it states inline attachment. However, I did not save the QRCode generated in my own files. Is there a way to display the QRCode in the email without having to save it in my database? Also, I have tried the following code on my view page and it works, but it does not work when I copy it to my action mailer code. It only shows the

Encoding strings to small sizes for QRCode generation

由 二次信任 提交于 2019-12-08 03:23:44
问题 I'm generating QR codes using strings that could very easily be longer in length then a QRCode could handle. I'm looking for suggestions on algorithms to encode these strings as small as possible, or a proof that the string cannot be shrunk any further. Since I'm encoding a series of items, I can represent them using ID's and delineate them using pipes as in the following lookup table: function encodeLookUp(character){ switch(character){ case '0': return '0000'; case '1': return '0001'; case

How to show Qr Code in Kendo Grid?

由 南笙酒味 提交于 2019-12-07 22:39:28
问题 This is my div but it outside kendo grid <div> <div id="qrUrl"></div> </div> This is my kendo grid field columns: [ { field: "Id", }, { title: "QrCode", width: 300, template: function(dataItem) { $(#Qrurl).kendoQRCode({ value: "www.google.com"+ dataItem.Id, errorCorrection: "M", size: 120, border: { color: "#000000", width: 5 } }); } In this situation my Qrcode generated outside grid with uniq (url+id ) but i want to this all qrcode in my kendo grid. i tried servel time this and another code

Android Marshmallow : java.lang.RuntimeException: Fail to connect to camera service

由 六眼飞鱼酱① 提交于 2019-12-07 18:05:27
I am using https://github.com/dlazaro66/QRCodeReaderView (QR code scanner ) in my android application My mainfest permission looks like this : <uses-permission android:name="android.permission.CAMERA" /> <uses-feature android:name="android.hardware.camera" /> <uses-feature android:name="android.hardware.camera.autofocus"/> and in Gradle I have the following code : compileSdkVersion 23 buildToolsVersion "23.0.2" defaultConfig { applicationId "com.gurkhatech.schoolmanagement" minSdkVersion 15 targetSdkVersion 23 versionCode 1 versionName "1.0" } I have implemented the code in Java as : @Override

QRCode encoding a simple string in ios

由 大兔子大兔子 提交于 2019-12-07 17:13:38
问题 I have downloaded a sample code from github for QRCode encoding. It works fine and generates an image with QRCode for string that I specified. But, when I scan that image, it displays the string like http://mystring . I need only mystring . How to do that? Is the problem is with QRscanner app? I think the QRencoderapp is about encoding an url. Is there any other sample to encode just a simple string (not url)? or Is there any changes to be done get the string instead of url in the above code?

How to stop scanning and store data from Google's Vision API?

由 末鹿安然 提交于 2019-12-07 15:17:08
问题 I'm using Google's Vision API BarcodeScanner on my project. I would like to interrupt scanning once a code has been scanned and store the content in another activity. How can i do that ? There are so many classes and 'interconnections' :x Thanks ! 回答1: If you are using CameraSourcePreview as in the sample code, you can call its "release()" method to shut down the camera and the associated barcode detector. If you are using the CameraSource directly without the preview, then you can call

Objective-C : is it possible to detect QR code data type?

由 醉酒当歌 提交于 2019-12-07 13:30:45
问题 I did qr code with Zxing, Right now I can read data but what I want is : Example: Be able read type of QR Code is wifi, VCard, Calendar, url, etc... if detect QR Code is wifi so I be able code to change wifi setting key, So, how do i know that data read from QR code is wifi? 回答1: QR Code itself does not specify any types. Its plain text. It can be an HTTP URL or a custom URL. (e.g. it should have "type://wifi" inside it. You can then use it to see what the type is). But off-the-shelf, there

QR code reader for BlackBerry

由 孤人 提交于 2019-12-07 10:54:08
问题 Is there a BlackBerry library/component (open source or commercial) for integration in my own application that acts as QR code reader? I'd like to fully integrate it in my application. Or alternatively: is there a way to use the open source ZXing library in combination with the camera, ideally with live detection of the code? 回答1: If you're targeting BlackBerry 6, RIM has now included the ZXing library as part of the OS: http://devblog.blackberry.com/2010/10/barcode-api/ For pre-6.0.0

ChecksumException in zxing QRCodeReader when NOT reading a QR-code with an URL

由 喜欢而已 提交于 2019-12-07 06:28:44
问题 The following code works perfectly and fast if I am scanning a QR code with an URL. However, if I am decoding a QR code with a simple string or number sequence (which is what I would like to do), it randomly works sometimes, but 99% of the time it keeps failing with a ChecksumException. if (webcam.isOpen()) { if ((image = webcam.getImage()) == null) { continue; } LuminanceSource source = new BufferedImageLuminanceSource(image); BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source

Extract the data from QR Codes and create a new QR code with colour

由 牧云@^-^@ 提交于 2019-12-07 06:27:13
问题 Has anyone heard of this before ? Extract the QR Codes (all the QR Codes must be in same Width and Height {square}) and get the data from each QR Code , and combine them. Then get the every pixel value from each QR Code and change them to hexadecimal . You will give #FFFFFFFF , #FF000000 , #00000000 (white,black, transparent) and the like (but for black and white QR Code , it would only 2 of them). Then for each value from each QR Code, by creating a new colour QR Code which the colour is
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