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Questions tagged [zbar]

for questions not specific to iPhone. ZBar is an open source (GNU LGPL 2.1) software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports many popular symbologies (types of bar codes) including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code.

ZBar is an open source software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports many popular symbologies (types of bar codes) including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code. ZBar supports several platforms: Windows, Linux, iPhone.

ZBar is used widely in iOS applications and has an SDK specifically for iphone devices.

ZBar SDK supports the iPhone 3GS and iPhone 4, as they have a camera with auto-focus. The ZBar library does not support the iPhone 3G. At the same time ZBar supports iPad 2 camera, in spite of absense of auto-focus camera.

ZBar is licensed under the GNU LGPL 2.1 to enable development of both open source and commercial projects.

Use this tag for ZBar issues not related to iPhone ZBar SDK, for which there is a specific tag.

392 questions
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unrecognized selector sent to class 0x865c6c

While am trying to integrate Zbar sdk to am getting this error. "+[QRCodeReadViewController presentViewController:animated:]: unrecognized selector sent to class 0x865c74"; Thanks in advance My code is +(void)startfn{ …
user2833481
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Android Zbar barcode scan using PictureCallback instead of PreviewCallback

I am trying to scan barcodes after taking a picture of them using the Camera Activity. However the byte[] data from onPictureTaken() is different from onPreviewFrame() (the one used in the examples). Is there any way to convert the byte[] data from…
jaesanx
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Issues taking pictures with ZBarReader in landscape orientation and flat iPhone position

I'm using ZBar to detect codes but also, I want to enable taking pictures from the same screen. I detected an odd behaviour taking pictures in landscape orientation. If I put my mobile in vertical landscape position the image comes out ok, but If I…
Alex Guerra
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ZBar camera overlay always leaves space for controls even if they're not displayed

I have a QR/bar code reader app that uses the ZBar SDK. I want to implement a custom overlay and remove everything else so the camera view covers the entire screen. The overlay is not difficult to implement. When I remove the ZBar controls via…
PaperThick
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How to add textVIew to camera Previw

Im developing application that is using Zbar qr code scanner. Everthing works fine, but I want to add some text to camera preview and Im unable to do it. When I add the text the camera preview disappear. There is not enought information about this…
Boris Pawlowski
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Apple Mach-O Linker Error (Cannot built my app when i select iOS device)

I built an app that uses ZbarSDK for barcode scan, the app works fine when running over the simulator, but when I try to archive it on a real device this error shows up:
user1655928
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Android ZBar SDK Get Scanned Image

I am using ZBar SDK for Android. It is decoding and returning me QRCode. But it is not returning captured image. I want to show captured QR Image from Camera to my screen. Thanks in Advance..
valentinaMeyashi
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Android: Finish ZBar Scanner after result is passed

I have an activity, called ScanRouter, that calls ZBar Scanner via startActivityForResult. Once I scan a code, onActivityResult in ScanRouter processes the result, passes the result to another activity via intents and ScanRouter is…
jroot.zen
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ZBar : custom button in Camera overlay view is not working

I'm using the ZBar SDK to read QR codes on iPhone, however I added a button in that view. But the button is not working! Even i tap the button it doesn't go to the action method of that button. Where is the problem actually? Thanks in advance for…
Leo
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QR code detection via zbar

I am able to decode the QR code via zbar 0.10, however, I don't know how to detect the QR code. I know that in the processing pipeline, detection should be achieved first before decoding can take place successfully. I also don't find any…
alfa_80
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Python version issue while configuring zbar

I am building zbar package on Linux but at configure stage, I'm stuck with the following error: checking for a Python interpreter with version >= 2.3.5... none configure: error: no suitable Python interpreter found The strange this is that if i run…
alfa_80
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Unable to remove warning about deprecated method in iOS 6

I am using the ZBar SDK in my application, which I am able to run just fine. However, I am getting the following warning that I can't figure out: "presentModalViewController:animated" is deprecated. First deprecated in iOS 6. My full method where…
syedfa
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Android ZBar custom integration

Good day. I'm trying to create tabbed application (via TabHost), tab bar with icons should be available at all time. However one of my activities implements ZBar component. The recommend way of usage is via intent: Intent intent = new Intent(this,…
user475255
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Most Current Version and Further Development/ new Features

i am wondering since the last commit date I found on the page was from Aug 8, 2011, if the ZBar Lib is still up to date. I decided last year to go with Zbar because of the good voting on Stackoverflow. I developed an iPhone app about one year ago.…
Dominik Feininger
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iPhone app sending data back to webserver

A little of your time. I have to develop a barcode application which is invoked from a webpage. Now i have written the javascript for calling the app. Once the app finishes reading the barcode, I have to go back to my webpage and the barcode data…
sree
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