I am looking for QR scan feature like WhatsApp. In WhatsApp when you open any QR image it automatically scan it. Please see the attached screenshot for the same.
How WhatsApp is doing what mechanism behind this.
Can you please tell me.
Barcode scanner library for Android, based on the ZXing decoder try this one.
QR Code Reader GitHub Library
Related
I have created a barcode scanner; That works fine. I am using Xamarin Forms and working with Android. I had recently received some barcode samples in photo format, however the photo's are not being recognized when I print them out and scan them.
Next, I would like to try to import the photos and use those as my background, to then see if it would recognize the barcode.
I am using ZXing.Net.Mobile and .Forms extension. Is there any file, or code I can implement to point to a filepath and then load that image as my background?
Thanks for any answers or suggestions.
If photos are not recognized than it must be something wrong with your code. I don't see a point to test this this way. In your application it wont work anyways. ZXing.Net.Mobile uses camera to intercept frames and decode them in real time to match qr code pattern.
I am a newbie to adobe Experience Manager (AEM)V6.2 and we are implementing QR code. I am able to generate QR code using the option Menu--> Insert --> Barcodes --> QR Code.
I need the QR code generated at the specific size(1.75in) but the generated QR code doesn't expand with mouse drag on the layout.
I had attached the image from the designer tool. I just want to get rid of some white space around QR code and expand it to the frame.
From some google references, i tried to modify the xml source in the below line
field name="QR_CODE_DATA" y="107.4mm" x="148.65mm" w="63.5mm"
h="63.5mm" access="readOnly">
barcode type="QRCode" dataLength="50" moduleWidth="0.0167in"
moduleHeight="0.0167in"
On any change in moduleWidth and moduleHeight, QR getting messed up
Can anyone help on how the size of the code can be modified? Thanks in advance.
QR
Finally figured it out. There is a ratio between the outer frame and QR code which must be maintained. If not, the Designer tool preview may show us the output but not in the real time.
I have a picture qr code, want to long press to identify this qr code picture, but can't identify, excuse me what reason, is the qr code picture is there a problem?
if your trying to say you cant decode the QRcode then heres your solution.
if your trying to say somthing else then im sorry for my off topic solution
as Burhan Khalid said the code is valid, but your your code is missing a border.
the border (or quiet zone) helps separate the QRcode from your content.
heres my test
im going to use https://webqr.com/index.html for decoding.
i uploaded it to the web site and it didn't decode.
i then opened it in gimp and gave it a border of 25 pixels, i then saved and uploaded the new code to the website and it decoded successfully
heres your qr code with 25px quiet zone,
heres the structure of a QRcode
Source the wikipedia article on QR codes, subsection Standards
I'm trying to decode qr-codes in a PDF (generate by Scan2Mail with a Canon iR Scanner).
I know the quality is quite poor (see attached image), but with every single iOS app for qr-code scanning I can successfully scan the code within milliseconds filming the image below with the iPhone cam.
I tried to scan with zbarimg and zxing but nothing did work. Do you have ideas what to do? maybe enhance the image somehow with imagemagick?
It seems counter-intuitive that an image of an image decodes, when the original image doesn't. An app is seeing a stream of slightly different versions of the image. The original is damaged and distorted. The blur that results when the camera captures it can actually help remove the noise. Yes, zxing decodes this fine -- from the Barcode Scanner app.
Try running this through a light blur filter first.
I already finished a simple QR Code apps by using ZBarCode library. I can scan the QR Code and capture the data back to my custom view.
I also can add a subview on Scanner view but that is just a layer and I would like to make a "auto focus" box like a red rectangle will blink when focused the QR Code and capture with SOUND.
It seems ZBarCode is not able to make an auto focus effect and capture with sound, is it something I missed or it's the limitation? If so, does any other QRCode library can do auto focus and capture with sound effect?
Thank you very much for any help!
The ZXing open source library can do that. It is available in an IOS flavor. http://code.google.com/p/zxing/