Hey, I keep struggling to use a barcode scanner on...

# ios

[Deividas Strioga]

Hey, I keep struggling to use a barcode scanner on iOS side of KMM.

I am trying google ml kit scanner, but after adding a pod dependency and using some class from this lib in the code, facing a build time error

Could not find or use auto-linked framework 'MLKitBarcodeScanning': framework 'MLKitBarcodeScanning' not found
Undefined symbol: _OBJC_CLASS_$_MLKBarcodeScanner
I have tried various tips on similar issues all over the web to no avail.

Did any of you face anything like this?

[Stefan Oltmann]

I wasn’t able to use Google ML Kit iOS for face recognition. I think it’s just broken and deprecated.

Use Apple Vision on iOS (VNDetectBarcodesRequest) and forget about ML Kit there.
I use ML Kit only on Android.

[Deividas Strioga]

Thanks for the answer Stefan.

I need to have live preview integrated into the app layout, and VNDetectBarcodesRequest sounds like it does not provide such functionality.

I guess my other option is to create a separate iOS lib, which uses swift based Vision APIs, and import it to the kmm project.

Or try using iOS framework AV for camera preview, and some java lib (zxing) for parsing of each frame ByteArray

Sounds like I could combine iOS AV framework with this lib framework as well. I guess that's what you meant

[Stefan Oltmann]

Not entirely sure if we are on the same page here, but I was able to use VNDetectFaceCaptureQualityRequest in my iosMain code. Directly in Kotlin. VNDetectBarcodesRequest sounds like it does provide what you want.