create qr code android

(); int logoWidth = logo. getWidth (); int logoHeight = logo. getHeight (); if (srcWidth = 0 | srcHeight = 0) {return null;} if (logoWidth = 0 | logoHeight = 0) {return src ;} // The logo size is 1/5 float scaleFactor = srcWidth * 1.0f/5/logoWidth; Bitmap bitmap = Bitmap. createBitmap (srcWidth, srcHeight, Bitmap. config. ARGB_8888); try {Canvas canvas = new Canvas (bitmap); canvas. drawBitmap (src, 0, 0, null); canvas. scale (scaleFactor, scaleFactor, srcWidth/2, srcHeight/2); canvas. drawBitm

overwritten.With the fault tolerance of the QR code, we can place the avatar in any area of the generated QR code image.The fourth parameter, $size, controls the size of the resulting picture, which defaults to 4.The fifth parameter, $margin, controls the size of the white space to generate the

/cgrectgetheight (extent)); size_t width = cgrectgetwidth (extent) * scale; size_t height = cgrectgetheight (extent) * scale; Create grayscale tone space cgcolorspaceref colorspace = Cgcolorspacecreatedevicegray (); Cgcontextref bitmapref = cgbitmapcontextcreate (nil, width, height, 8, 0, ColorSpace, (Cgbitmapinfo) kcgimagealphanone); Cicontext * context = [Cicontext Contextwithoptions:nil]; Cgimageref bitmapImage = [context createc

,$errorCorrectionLevel); $this->assign (' img ',$qrcode _path_new); }Else{ $qrcode _path= "./upload/".$info[' Savepath '].$info[' Savename ']; $content=$_post[' Content ']; $matrixPointSize=$_post[' Matrixpointsize ']; $matrixMarginSize=$_post[' Matrixmarginsize ']; $errorCorrectionLevel=$_post[' Errorcorrectionlevel ']; $url= "./upload/qrcode/".Date("Ymdhis"). ". png; Makecode ($qrcode _path,$content,$matrixPointSize,$matrixMarginSize,$errorCorrectionLevel,$url); $this->assign (' img

statistics, and other scenarios. When a user scans a QR code with a scene value, the following two events may be pushed: If the user has not followed the public account, the user can follow the public account, after which the event with the scene value will be pushed to the developer. If the user has followed the public account, the user will automatically enter the session after scanning, and the event wi

open source Java class Library for parsing 1d/2d barcodes in a variety of formats. The goal is to decode the QR code, Data Matrix, and UPC 1D barcodes. At the same time, it also provides a class library such as cpp,actionscript,android,iphone,rim,j2me,j2se,jruby,c#. The role of the Zxing class library is mainly decoding, is the current open source class library

Thinkphp does not have a QR code-related library, so we can integrate phpqrcode to achieve the function of generating QR code. Download Phpqrcode Integration into the thinkphp framework Under "Thinkphp\library\vendor\", create a new directory Phpqrcode to extract the content

= [Foundbarcodes mutablecopy]; [Newbarcodes Minusset:originalbarcodes];This code uses the subtraction of the collection to remove the already cached QR code, leaving only the newly scanned QR code.Finally, we use the collection operation again to remove the QR

Since ios and Android quickly occupied the market, the QR code has been quickly filled up. Similarly, while we are using php for php development, we must first think of the issue of generating the QR code, so where is a good start? Since ios and

the destruction of a part of the possibility of parsing the complete information, and to the two-dimensional code in the middle of the logo can still read the complete information is its high fault tolerance.Online has found some PHP generation with Logo QR code method, but not careful enough, the generation of two-dimensional

Following the previous introduction of a Japanese Open-Source Software (this software can only implement QRCode) Original article: Java implements code and decoding of the QR code QRCode. Now we find another excellent open-source tool-ZXing, it is more flexible and convenient, and supports multiple encoding formats. Full text directory: Basic Introduction Demons

of zxing is: http://code.google.com/p/zxing/Zxing is still very powerful, originally written in Java and supported by Android, iOS, Symbian and other mobile phone operating systems.But I do not know why, the official website has not even an example, the document is also a dictionary of all classes listed, not for the reader's consideration.Below I would like to use zxing to complete the example shown in this tutorial for beginners reference:1. We

front end. Introduction: QRCode. js is a js library that supports HTML 5 canvas and table tagging in the DOM across browsers. We use QRCode. js. Browser: IE6 ~ 10, Chrome, Firefox, Safari, Opera, Mobile Safari, Android, Windows Mobile, ETC. Jquery-qrcode: Jquery-qrcode features: simple operation, small size, only 14 k after compression, but does not support Chinese encoding. Effect: Qrcodejs: Qrcodejs features: