scan qr code and barcode reader

1. PrefaceCurrently in the mainstream market app, QR code/Barcode integration is mainly divided into two forms to integrate: a. One is to call the phone camera and open the system camera full screen to shoot B. One is to customize the frame of the camera view, control and add the relevant code guide to me today I'm goi

next, because using avfoundation has been unable to scan our QR code, and finally decided to use a barcode. I added the EAN13 barcode type (the type we used to generate the barcode) in Avcapturemetadataoutput's metadataobjectty

];Self.previewlayer = preview;6. Start session[Session startrunning];Self.session = session;}#pragma mark-Output proxy methodThis method is recognized in the QRCode, and the conversion is completedIf the content of the QRCode is larger, the longer the conversion takes-(void) Captureoutput: (Avcaptureoutput *) captureoutput didoutputmetadataobjects: (Nsarray *) metadataobjects Fromconnection: (avcaptureconnection *) connection{Frequent scans, invoking proxy methods1. If the

,) [Session startrunning];}6, the implementation of the 4th step of the agent method#pragmaMark-avcapturemetadataoutputobjectsdelegate implement this proxy method, (this agent inside this one method)-(void) Captureoutput: (Avcaptureoutput *) captureoutput didoutputmetadataobjects: (Nsarray *) metadataobjects fromConnection :(Avcaptureconnection *) connection{//This method is called after the data is scanned. Because the call is very frequent, it is judged that when the data is captured, the

(1) Download the QR Code library source codeLink: http://pan.baidu.com/s/1pKQyw2n Password: R5BVWhen the download is complete, open the folder where you can see the libzxing, and add it to Android Studio, with the following: File------New-----"Import moudle(2) button click event for scannerBackground code:Public void Scanner (view view) {Startactivityforresult (New Intent (Scanactivity.this,Captureactivity.

Enable the mobile phone camera to scan the QR code or complete the operations, mobile phone camera Barcode (1) download the source code of the QR code library Link: http://pan.baidu.c

QR code synthesis, Apple and android (ios and android) are combined into a QR code, allowing users to scan a QR code to download apple and android apps separately. android

. zxing. decoding, Com. mining. app. zxing. view these three packages are copied to your project, and then the corresponding resources are introduced. I also directly referenced them from my project, and the package name has not been changed, of course, you also need to reference zxing. jar Com. example. the qr_codescan package contains a mipcaactivitycapture which directly introduces the code of my previous project. This activity mainly processes

) animated{[Readerview start];}-(void) Viewdiddisappear: (BOOL) animated{[Readerview stop];}-(void) Readerview: (Zbarreaderview *) Readerview didreadsymbols: (Zbarsymbolset *) symbols FromImage: (UIImage *) image{NSString*codedata =[[NSString alloc] init];; for(Zbarsymbol *syminchsymbols) {CodeData=Sym.data; Break; } Uialertview*alert = [[Uialertview alloc] Initwithtitle:@"Scan Results"Message:codedataDelegate: Self Cancelbuttontitle:@"OK"Otherbutto

, Self.imageLine.frame.size.width, Self.imageLine.frame.size.height);if (Linevalue ==minvalue) {down = YES;up = NO;}}}/** This is the proxy method that must be implemented, and from this method you can get the scanned url*/#pragma mark-avcapturemetadataoutputobjectsdelegate-(void) Captureoutput: (Avcaptureoutput *) captureoutput didoutputmetadataobjects: (Nsarray *) metadataobjects Fromconnection: (avcaptureconnection *) connection{NSString * STRINGVALUE;if ([metadataobjects count] > 0) {[Self.s

In the previous section, we have implemented QR code scanning, which we use bounds and corners of metadata to achieve a visual scanning effect.Bounds defines a rectangle that contains a two-D code image, and corners defines the actual coordinates of the two-dimensional code image:The bounds and corners are the same whe

://stackoverflow.com/questions/7020136/free-c-sharp-qr-code-generator 2): Through Thoughtworks.qrcode (ThoughtWorks.QRCode.dll) to achieve 1.1): First download the corresponding Third-party components through the VS2015 NuGet, as shown in the following figure: 1.2): The concrete generation of two-dimensional code method is as follows private void Gen

IOS AV Foundation QR code scan read QR code content using synthetic speech In the previous section, we provided a visual display of the QR code recognized by the program. In this sectio

Module : BarcodeBarcode Module Management Barcode scanning, provide common barcode (two-dimensional code and one-dimensional code) scanning recognition function, can call the device's camera to the barcode image scanning for data input.