Download The Zxing Library

[Allen Weyrauch]

<div>On iOS-Devices with iOS camera access works only in native Safari and not in other Browsers (Chrome,...) or Apps that use an UIWebView or WKWebView. This is not a restriction of this library but of the limited WebRTC support by Apple. The behavior might change in iOS 11.3 (Apr 2018?, not tested) as stated here</div><div></div><div></div><div>In the PDF 417 decoder recent addition, the library now makes use of the new BigInt type, which is not supported by all browsers as well. There's no way to polyfill that and ponyfill libraries are way to big, but even if PDF 417 decoding relies on BigInt the rest of the library shall work ok in browsers that doesn't support it.</div><div></div><div></div><div></div><div></div><div></div><div>download the zxing library</div><div></div><div>Download File: https://t.co/jrs1j03cYj </div><div></div><div></div><div>What you should do is to include a jar, you can not be downloaded. At first when you try to take zxing had the same problem, luckily I found the jar and I could download it. You have to verify either version which you need.</div><div></div><div></div><div>The decode() method accepts an image path or PIL Image object (or list thereof)and takes optional parameters try_harder (boolean), possible_formats (list of formats to consider), and pure_barcode (boolean).If no barcode is found, it returns a False-y BarCode object with all fields except path set to None.If it encounters any other recognizable error from the Java ZXing library, it raises BarCodeReaderException.</div><div></div><div></div><div>I've tried a number of ways to import the 3rd party library 'ZXing' into my iOS app, but all have been painful or have simply not worked. If anyone could suggest either what I'm doing wrong, or a better way to import a library such as ZXing, I'd be very grateful.</div><div></div><div></div><div>Add Path to ZXing in header search paths and library search paths. "$(PROJECT_DIR)/../../Projects/ZXingObjC-2.2.6/ZXingObjC" . Use $(PROJECT_DIR) so the path is relative and works on all build machines.</div><div></div><div></div><div>I am currently writing an application for Android that uses the ZXing library to encode/decode QR codes. I have tried all versions of ZXing from 3.3.1 to 1.9 to see if this error would go away, but it has not. There seems to be no questions asked regarding this on these forums or elsewhere online, and nothing in the ZXing documentation seem to reference this, either.</div><div></div><div></div><div>Figured the issue out. I have the ZXING4P library installed and it was going off that instead of the ZXing jar I have in my "code" folder.Quick note: Code won't compile if you have both the ZXING4P and the ZXing libraries.</div><div></div><div></div><div></div><div></div><div></div><div></div><div>Barcode scanning is a common functionality in many mobile applications. From checking attendees into an event and opening web pages to creating a conference scavenger hunt, there are plenty of use cases. ZXing.NET Mobile (Zebra crossing) is an open source library that makes scanning barcodes as effortless and painless as possible in your Xamarin and Xamarin.Forms applications.</div><div></div><div></div><div>Since I would like to use zxing 3.3.0 in Jaspersoft Studio 6.3.1, and actually the report will be running in a JasperReports Server, can you tell me how can I upgrade the zxing library in them ? Are they compatible with each other ?</div><div></div><div></div><div>We are facing the NDC library loading issue in our custom UI5 application. When we checked the same NDC barcode scanner in SAP UI5 - SDK, we also got the same library loading issue. I am attaching the below screenshot and URL for reference. Do anyone have idea/suggestions regarding this issue are welcome and appreciated.</div><div></div><div></div><div>First a small intro: I am building a barcode scanner and have finished on the hardware part but now I am stuck on the software part. I have attached a laser scan engine and feeding its output to a digital pin (A2) that I have set as input. So far so good and my pin reads as such</div><div></div><div>val = digitalRead(A2); // read PIN A2</div><div></div><div>and gives me a stream of raw binary data.</div><div></div><div>What I wanna do now is take this binary data and use a decoding library (ZBar / ZXing are the most popular ones) to translate it to an actual string.</div><div></div><div></div><div>ZBar is already written in C++ so that's good. I believe the most important files for me are decode.c/decode.h/scanner.c/code128.c/code128.h/zbar.h. So where do I go from here? The problem is that if I try for example to create a sketch with decode.c I am having many problems with header files dependencies. If I use the import library function and then include them, they still include their own header files, which cannot be found and I get a fatal error.</div><div></div><div></div><div>Hi, thanks for your answer.</div><div></div><div>It's not a huge program but in the end of the day it's only the decoder library that I need because I already have my data. It is actually using some standard libraries (stdio, stdlib, stream etc) so I was wondering how I can get around that.... I have heard that Atmel Studio+visual micro can help in this case?</div><div></div><div>Google does not give me any arduino barcode decoding library.... Any page that refers to arduinos and barcodes assumes that the scanner has already processed the barcode and sends the string to the arduino via serial/usb/ps2 or whatever... I have found nothing about microcontrollers decoding raw binary data this is why I have come to this forum.</div><div></div><div></div><div>I am in the middle of attempting to write my own barcode reader, partly to customize it more, and partly to provide a codebase for the community that doesn't rely on a paid plugin. However, while portions of my code is working well, the second I add the ZXing Unity plugin I am unable to build the exported VS2015 project.</div><div></div><div>I am downloading the DLL's from the main ZXing website, dragging the "zxing.unity.dll" into Assets/Plugins folder in the Unity Editor to import the DLL. I build and export the project to VS2015. However, here is the build message I get:</div><div></div><div></div><div>Alright, after experimenting here are some insights:</div><div></div><div>1.) Real time, constant barcode scanning is not likely. It was my hope to have a constant scanning system so that it can look for certain barcodes and maybe see them before the person does to better direct them. However, even with multi-threading, the ZXing library creates too big of a process hit and causes a large FPS drop. </div><div></div><div>2.) Grabbing frames to process is also a bit too intensive for the system, and results in a lower frame rate and sometimes hitching/freezing for a very short period. I found the locatable camera to be too slow. I found the Unity's WebCamTexture to work better. I set the resolution to 1280x720 for testing (reason for higher res explained below), and set the requested frame rate to 1. The 1 is not proper, but Unity forces the webcam to match the nearest FPS supported, thus the 1 defaults the webcam to the lowest FPS it supports.</div><div></div><div>3.) The barcode library, ZXing, works pretty well but it does not help that it seems that it largely focuses on the center of an image, which is an optimization that makes sense on their part. However, if the user is in a scanning mode, and their head is moving around doing some task while trying to scan this may be more difficult for them to achieve. My code takes the webcam texture, and splits it into quadrants, and each of these are scanned. This helps with the peripheral scanning.</div><div></div><div>4.) Doing #3 I noticed the system now recognized barcodes from further away. This is because you're taking the larger image, cropping it, and essentially zooming in to a section for scanning. This zooming allows it to work from further away. Thus, I created a zoom section as well.</div><div></div><div>5.) #3 and #4 result in multiple images to scan, so I abstracted out the barcode scanning to lists and arrays and abstracted that out to it's own class. You instantiate the class, passing a callback function in the constructor, and then call a barcode scanning function passing the list of images to scan.</div><div></div><div>6.) Most importantly, I figured out how to get the darn thing to compile. You get the Unity ZXing DLL from their repository. From here, drag it into your project, then click on the DLL in the asset manager, under the Windows Store App Settings check the "Don't process" checkbox. Best I can tell, without this setting (which is off by default) Unity actually alters the DLL to what it thinks is needed to run on the platform... Sadly, it doesn't do a good job. Once this is checked, the exported codebase compiles perfectly for x86.</div><div></div><div></div><div>I found a solution for my problem.</div><div></div><div>I downloaded the QRcodeScanUWp54f3.rar from this blogpost:</div><div></div><div> -scan-in-uwp-with-usb2-0-webcam-and-kinect-2</div><div></div><div>Then analysed how he got ZXing to work on HoloLens.</div><div></div><div>Just add the zxing.unity.dll twice with the following settings in the inspector.</div><div></div><div>One to get access in your script (so #if !UNITY_EDITOR is not necessary):</div><div></div><div></div><div></div><div>And then I added a second:</div><div></div><div></div><div></div><div></div><div>This setting is deploying right and no runtime errors appear. To tick the "Don't process"-option is obviously not necessary in my case.</div><div></div><div>To tell the truth i absolutely don't get it. If someone has an explanation why my Hololens can handle zxing when I add it twice, I would be thankful.</div><div></div><div>Have a nice day</div><div></div><div></div><div>1) Import zxing.unity into your Unity assets package under the folder Plugins, and (assuming that you use the recommanded version of Unity for hololens, 2017.4 LTS) set it import parameter for both WASP and Editor, and set UWP on the WASP parameter. In that way, both Editor and Visual Studio won't yield error and you could run simple test in the Editor.</div><div></div><div></div><div>2) When times come to deploy, you'll experienced crash due as explain before. In order to get rid of that, you could just delete zxing.unity in the list of reference of your Visual project (compile with Unity before, make sense), and import ZXing.net from Nuget repo to replace it. It work pretty well on my project, and avoid wrapper and every stuff like that.</div><div></div><div></div><div>SAPUI5 has a module that allows you to scan Barcodes (1D, 2D) sap.ndc.BarcodeScanner, but it has a limitation: this module uses native library that is only available through the SAP Fiori Client (mobile application for Android/iOS).</div><div></div><div></div><div>I'm looking for a solution to place a focus area in the video stream to improve the scan results.</div><div></div><div>In the latest ZXing library there is a method drawFrameOnCanvas which is supposed to support this requirement.</div><div></div><div></div><div>If you are a software developer looking to create an Android app with a QR code scanner, this comprehensive tutorial will guide you through the process. We will be using the popular ZXing library to implement the QR code scanner.</div><div></div><div> 7c6cff6d22</div>