zxing

项目中需要用到二维码，二维码的码制是PDF417，在做了一番研究之后发现zxing是个不错的开源工具（代码托管在google上面）。为什么选择zxing，由于其他一些工具比如barcode4j（开源，支持读，好像不支持写，最后维护时间在2010年）、barcode（商业版）都不太适合，所以选择了zxing。 zxing并没有提供直接可以使用的jar文件，而是需要自己通过编译源码，生成需要的jar文件。额外说明，zxing利用maven管理自己的代码，并且默认使用了jdk7，代码中也使用了jdk7的一些新特性，基于这些情况，可以适当调整jdk的版本（如果降低jdk的版本，需要改动少量的源码）。 下面直接贴出读写文件的代码： ZxingPdfRead package test; import java.awt.image.BufferedImage; import java.io.File; import java.io.IOException; import java.net.URLDecoder; import java.util.EnumMap; import java.util.Map; import javax.imageio.ImageIO; import com.google.zxing.BinaryBitmap; import com.google.zxing

I want to transmit binary data over a noisy channel. I read that a good ECC algorithm to detect errors is Reed-Solomon. The problem is i don't understand the input for this algorithm. here is my naive failed attempt with zxing.net: int[] toEncode = { 123,232,432}; var gf = GenericGF.AZTEC_DATA_12; ReedSolomonEncoder rse = new ReedSolomonEncoder(gf); rse.encode(toEncode, 2); ReedSolomonDecoder rsd = new ReedSolomonDecoder(gf); rse.encode(toEncode, 2); please explain to me the input for the encoder and decoder. Is this the implementation you are using here: ReedSolomonEncoder.cs ? If so, to

I've set up the /android project of ZXing 1.7 as a library referenced by my main android app project. As a quick test / proof of concept, I have used the CaptureActivity, in the same manner as described here: http://damianflannery.wordpress.com/2011/06/13/integrate-zxing-barcod ... Mostly, things work well, I can launch the CaptureActivity and receive the scanned data in my activity that launched it. However, I get some really strange behaviour, which I think may be related to resource IDs conflicting between my project and the /android ZXing project. This will take some explaining so please

The use of front light option with zxing1.6 barcode scanner does not work on my Nexus One. I need to be able to use the flashlight in my app, but you can't have two instances of the camera running. Is there a way to use the flashlight without accessing the camera? Or can I somehow access a camera that is already in use? I am using the Google IntentIntegrator.java patch to be able to scan barcodes. The short answer is "no"; the front LED is controlled as a flash mode, which is a property of the camera. It is mode "torch". And no two apps can't open the camera at the same time. (A longer answer

I am working with such a great library zxing to read QR code. I already got QR code successfully. Now, My application runs in landscape mode and camera takes the whole screen and red QR detection rectangle box is in the middle. I wanna change this to portrait mode & replace the camera view only with the red QR detection rectangle box. I change CaptureActivity tag which is inside the zxing library manifest file. android:screenOrientation="portrait" . But found nothing what I actually want. I don't know where I have to change/write code to get this. Md. Saiful Islam I was in same problem and got

I am using Xamarin forms to write an iOS app and using the ZXing library to scan barcodes. I am trying to read a driver's license (PDF417) barcode, but the library is not able to recognize that barcode. If I include UPC or other barcodes in the PossibleFormats, they are scanned correctly. I am also certain the barcode I am trying to read is PDF417 barcode because Scandit is able to recognize it correctly while using only PDF417 barcode. Here is the code I am using. What do I need to change so that the PDF417 barcode is recognized correctly? async void Handle_Clicked (object sender, System