information looks like. what really cares about this information is a tool for scanning the QR code, in the preceding example, after scanning the QR code, you can read the data stored in the QR code and try to identify it, when i
website.Email Address)On the Internet, you will basically use e-mails for contact. Of course, the QR code can also save the e-mail address (such as zhaoxiaobo987@163.com ). Its Syntax format is {mailto: zhaoxiaobo987@163.com }.Telephone numbers)The data format generated by the QR code of the phone number is very simpl
Thinkphp3.2.3 integrate phpqrcode to generate QR code with logo and qrcode QR code logo
Thinkphp does not contain libraries related to QR codes. Therefore, we can integrate phpqrcode to generate QR codes.
Download phpqrcode
: Http
not distinguish between data types.
3. the business card QR code uses vCARD encoding rules. The format is similar
BEGIN: VCARDVERSION: 3.0N: name of a companyTEL; WORK: 12345667EMAIL; WORK: abcd@abcd.comADR; WORK: A string of address informationURL: http://www.xxxxxx.comEND: VCARD
4vCARD main concepts.
Starting from B
:
NSMutableSet *newBarcodes = [foundBarcodes mutableCopy]; [newBarcodes minusSet:originalBarcodes];This Code uses the reduce operation of the Set to remove the cached QR code and only retain the newly scanned QR code.
Finally, we use the set operation to remove a
test results are as follows (microseconds ):
Input String Length: 74
EC performance 1000 tests ~ Qrcode. Net: 3929 ZX ing: 5221
At the same time, qrcode. Net can analyze strings and decide whether to use UTF-8 encoding. (For example, when using Chinese .)
Qrcode usage:
Create a project, add a reference to the class library, and then introduceGMA. qrcodenet. EncodingNamespace.
using Gma.QrCodeNet.Encoding;
Output the
Cool QR code and cool QR code
Personal blog address: http://1.liangtao.sinaapp.com/
Preface
In the process of blog beautification, You need to place a QR code on the Right To facilitate readers to scan. However, the original
QR code creation and scanning, QR code creation and Scanning
Yesterday, we introduced a QR code creation policy. During the test, we found that the generated QR
represents a Web address. Using a syntax format similar to {URLTO:www.ceshi.com} also allows recognition software to recognize URLs.e-mail (e-mail address)e-mail will be used on the Internet when you contact us. Of course, the QR code can also save the email address (e.g. [email protected]). Its syntax format is {Mailto:[email protected]}.Phone number (telephone numbers)The data format generated by the
white, the shape is relatively single, no feature. If you want to pursue personality, create color QR code, you can see how sesame nets do.We see the most in the daily life of the two-dimensional code generator generated by the two-dimensional code is nothing more than the
* Qr code business card format --- vcard
* The format is as follows:
BEGIN: VCARD
VERSION: 3.0
FN: User name
TEL; CELL; VOICE: 15201280000
TEL; WORK; VOICE: 010-62100000
TEL; WORK; FAX: 010-62100001
EMAIL; PREF; INTERNET: lzw # lzw. me
URL: http://lzw.me
OrG: Zhiw
error correction level, the range is L, M, Q, H, ascending from left to right, using-V to control the length of the edge, the range is 1 to 40, the larger the number of side length larger.Two-dimensional code with picturesIf you want to create an art QR code, you can use the-p parameter to specify the picture, which c
How to generate a QR code using. NET and a QR code using. NET
The following describes how to generate a QR Code using. NET. The detailed steps are as follows:
1. Create a window applica
viewDidLoad];// Do any additional setup after loading the view, typically from a nib.// Obtain the camera DeviceAVCaptureDevice * device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];// Create an input streamAVCaptureDeviceInput * input = [AVCaptureDeviceInput deviceInputWithDevice:device error:nil];// Create an output streamAVCaptureMetadataOutput * output = [[AVCaptureMetadataOutput all
width = + (ten * size); int height = 100 + ( size);//The picture format of the two-dimensional code string formatted = "JPG"; Hashtable hints = new Hashtable ();//The encoding used for the content hints.put (Encodehinttype.character_set, "utf-8"); Bitmatrix Bitmatrix = new Multiformatwriter (). Encode (Text,barcodeformat.qr_code, width, height, hints);//1.1 Go to white edge int[] rec = Bitmatrix.getenclosingrectangle (); int reswidth = rec[2] + 1;int
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