fix(barcode-scanning): add delay before starting camera session

[robingenz]

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Close #176

[pkg-pr-new]

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@capacitor-mlkit/barcode-scanning

npm i https://pkg.pr.new/capawesome-team/capacitor-mlkit/@capacitor-mlkit/barcode-scanning@188

@capacitor-mlkit/face-detection

npm i https://pkg.pr.new/capawesome-team/capacitor-mlkit/@capacitor-mlkit/face-detection@188

@capacitor-mlkit/face-mesh-detection

npm i https://pkg.pr.new/capawesome-team/capacitor-mlkit/@capacitor-mlkit/face-mesh-detection@188

@capacitor-mlkit/selfie-segmentation

npm i https://pkg.pr.new/capawesome-team/capacitor-mlkit/@capacitor-mlkit/selfie-segmentation@188

@capacitor-mlkit/translation

npm i https://pkg.pr.new/capawesome-team/capacitor-mlkit/@capacitor-mlkit/translation@188

commit: 8f2eb9b

[TimvdEijnden]

When will this be released?

[robingenz]

@TimvdEijnden I was still waiting to see if there would be more feedback.

[TimvdEijnden]

I can try the pkg.new version, because I got an issue only on iOS that the camera is not showing up

[jimcase]

Thanks @robingenz for tackling the camera issue.

While the 0.1s delay might help in some cases, it feels more like a temporary workaround than a solid fix. The main issue is that commitConfiguration() sometimes runs asynchronously, causing startRunning() to be called prematurely. Ideally, the solution should ensure commitConfiguration() fully completes before proceeding, without relying on a fixed delay.

We've tested this approach in another project (PR: cardano-foundation/cf-identity-wallet#772) and found that the delay didn't consistently resolve the issue. A more reliable method would be preferable.

Error:

*** Terminating app due to uncaught exception 'NSGenericException', reason: '*** -[AVCaptureSession startRunning] startRunning may not be called between calls to beginConfiguration and commitConfiguration'
*** First throw call stack:
(0x18441908c 0x18171b2e4 0x1a25838f0 0x104a86d84 0x1063d8d68 0x1063d8de8 0x105a84a30 0x105a8671c 0x105a9ae58 0x105a9b618 0x20b78bc40 0x20b788488)
libc++abi: terminating due to uncaught exception of type NSException

[robingenz]

@jimcase Yes, I know that's not an ideal solution. Unfortunately, I can't think of any other solution at the moment. If you have an idea, you are welcome to create a PR and I'll take a look at it.

[jimcase]

Hey @robingenz, I just created a PR with a solution using serial DispatchQueue(FIFO) to sequentially run the configuration and the start of the session