Native QR code scanning in iOS
This article describes how to use the built-in system to scan QR code: click a button on the current page to create a scan VIEW. Careful friends can find that the title is changed and the return button is hidden. This
More and more mobile phones are equipped with auto-focus shooting functions, which also means these mobile phones can have bar code scanning functions ....... the mobile phone has the bar code scanning function, which can optimize the shopping process and quickly store e-business cards (QR codes.
This article uses ZXing 1.6 for bar
QR code for Android development, android
What I have been doing before is. NET Development uses the C # language. java was used only when an APP was created recently. The QR code scanning and integration into the APP did not return a value after scanning the
Scan the same QR code to access different types of Web browsers.
1
How is a Web site different from a string scanned by the java QR code? How does one jump to a browser to access the web site?
Use a regular expression to determine if it is a URLThen jump to the browser
wtfx.tk is a website that shares the free SS account, but he shares only the QR Code. And the latest version of the SS can not scan the two-dimensional code on the page, so it is very troublesome to download the Picture. So I specifically wrote a crawler to save the QR code
? {if let sureqrstring = qrstring {Let StringData = sureqrstring. datausingencoding(nsutf8stringencoding, Allowlossyconversion:false)//Create a two-dimensional code filter Let Qrfilter = Cifilter (name:"Ciqrcodegenerator") Qrfilter. SetValue(StringData, Forkey:"InputMessage") Qrfilter. SetValue("H", Forkey:"Inputcorrectionlevel") Let Qrciimage = Qrfilter. OutputimageCreate a color filter, black and white le
= qrstring {Let StringData = sureqrstring. datausingencoding(nsutf8stringencoding, Allowlossyconversion:false)//Create a two-dimensional code filter Let Qrfilter = Cifilter (name:"Ciqrcodegenerator") Qrfilter. SetValue(StringData, Forkey:"InputMessage") Qrfilter. SetValue("H", Forkey:"Inputcorrectionlevel") Let Qrciimage = Qrfilter. OutputimageCreate a color filter, black and white let Colorfilter = Cifilt
Consider the question:Typically, we develop an app that has an Android version and an iOS version.But only one QR code? What do we do?How to let iOS user scan qr code download iOS version, android user scan QR code to download to
From this section, we use AV Foundation to make a barcode (not just a QR code) scanner, in addition to scanning the QR code function, but also with speech synthesis and camera zoom function.Create a single view application named COLLOQR. Open storyboard, disable sized class. Select the view controller and put it into t
C # generate a QR code,
Reference ZXing class library
Functions:
1 generate a QR code with a Logo
2. Draw the QR code to the image.
3. Draw text on the Image
Generate QR
Required jar package: qrcode. Jar
:
The following is an encapsulated helper class that provides only the following APIs:
(1) encode (string Str );
(2) encode (string STR, file F );
(3) encode (string STR, outputstream out );
(4) decode (file F );
(5) decode (inputstream in );
Package Org. xiazdong; import Java. AWT. color; import Java. AWT. graphics2d; import Jav
header. if the file does not exist, try to create if ($ newf) while (! Feof ($ file) {fwrite ($ newf, fread ($ file, 1024*2), 1024*2); // write the file, fread controls the maximum file size, here is 2 M }}if ($ file) {fclose ($ file); // close the file opened by fopen} if ($ newf) {fclose ($ newf );}}
Step 2: create a new folder named qrcode in the root directory of the website to ensure that you have the
PHP generated two-dimensional code in a variety of ways, you can use the Google Open API, you can use the PHP QR Code class library generation, this article focuses on the use of PHP QR code class library to generate two-dimensional code
Original, reproduced please indicate the source!With the advantages of the interface is simple, convenient, always updated, the two-dimensional code generation will not be saved in the Project Server above, you can reduce unnecessary expenses, no need to download and install what software, can be easily referenced, this is the most convenient free URL QR code gen
When using aspose. barcode, you can use a non-English character set to generate a two-dimensional code, for example, 文,,, and so on. The maximum number of characters is 1000. The following is an example of generating a QR code using Turkish text and Chinese text:
Create a PDF417 QR
1, build scan QR code interface. Storyboard can be used to build2. Create the object's controller class to manage the scan of QR code3. Import in this class #import Frame4. Call in Viewdidload1 [self setupqrcode];5, implement the above method- (void) setupqrcode{//1. Get input deviceAvcapturedevice *inputdevice =[Avca
QRCode Two-dimensional code learning:Need to pour a frame avfoundation1. An input device is required,2. Output device (parsing the contents of the input device)3 A session class (input and output is finished, which one is the input which is the output)Avcapturesession4. A display scan of the content layerTwo: Then createThree: Set up proxy-get dataThe session class does not know which one is the input device and which one is the output device need to
captureactivity there are many ways that we do not need, mostly about decoding the success of the processing, if you want to retain the additional copies of many classes, so it is removed, here also do not paste code, the attachment source has. Part III: Modify to vertical screenAfter two steps above, our own project should be able to run (don't forget to add permission., of course, is horizontal, so we need to modify several places to modify it to a
After Android uses Zxing to scan the QR code and change it to a portrait screen, the preview screen is stretched and distorted.
Perfect solution: After Android uses Zxing to scan the QR code and changes it to a portrait screen, the preview screen is stretched and distorted.
Step 1: Find
com.zxing.cameraPackage
Camer
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