An error occured while connecting to camera about barcodescanner

[augonis]

I had this issue on Nexus 5 with Android 6.0.
Turns out I had to go into android settings>applications> (app) >permissions and explicitly allow access to the camera.

Hope this is helpful for someone.

[Hackmodford]

I am also getting a black screen with a red line. I tried both zbar and zxing�.
I have an original Nexus 7 with Android 4.4.4
Only have a front camera

[pavs23]

Make sure you have the permission to use the camera in your manifest. Also make sure that you end any other processes using the camera

[MirzaSikander]

Any luck with this? I am also getting sort of the same problem. What happens with my application is that I am able to get one barcode scanned but it does not work the second time around.

When StartCamera() is executed, the logcat prints out:
An error occured while connecting to camera:0

but it seems to be still working as the camera starts and I am able to get the callback after I scan a barcode. In the handleRequest function I try to stop the camera using StopCamera() but it does not seem to work and in the logcat, it prints out
An error occured while connecting to camera:0

I also tried manually getting hold of the camera after the first barcode scan, but it crashes the application. Although, I have no issue with grabbing the camera and releasing it before the activity is started.

[NameX44]

Same here. Can't scan 2 barcode. When i startCamera a second time I've got this :

"An error occured while connecting to camera:0"

Does someone found a solution ?

Tried many things in the stopCamera() method but nothing works..

[MirzaSikander]

I sort of figured out the problem, but not the solution :(

The issue is that the camera api being used has been deprecated.
On Mar 9, 2015 8:42 AM, "NameX44" [email protected] wrote:

Same here. Can't scan 2 barcode. When i startCamera a second time I've got
this :

"An error occured while connecting to camera:0"

Does someone found a solution ?

Tried many things in the stopCamera() method but nothing works..

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#42 (comment).

[NameX44]

So you left this library ? or you updated it ? or found another one ?

[MirzaSikander]

Yeah I switched to another one. I would recommend searching on github for
projects that have been recently updated or contributed to.
On Mar 9, 2015 2:32 PM, "NameX44" [email protected] wrote:

So you left this library ? or you updated it ? or found another one ?

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#42 (comment).

[NameX44]

could you tell me which one please ?

[bladnor]

I have exactly the same issue. I use appcompat-v7:21.0.3 library with Android Version 4.4.4. Is there already a fix for it?

[skalathingal]

Any luck on this issue ?

[BadChoice]

Not working yet?

[artemcarabash]

really? Thanks @augonis for your solution, I spent about 3 hours to find that it's all about permissions!

[fairchild88]

@augonis you are right, thx

[heitorcolangelo]

In my case, I was forgetting to call scannerView.stopCamera() and scannerView = null in onDestroy method.

[HeesangLee]

In my case, same issue was solved after rebooting.
Maybe other camera application didn't unlock hardware camera before.
But It seem to be application problem If someone download and use my app at first.

Anyone know to solve this kind of camera issue by programmatic method?

[sergioc6]

@augonis you are LEGEND my friend!

[dm77]

The zxing sample now includes code that shows how you can request camera permissions.