bug: cannot scan with phone facing an angle of 30-45 degrees (iOS)

[nicolasmohamed]

Plugin(s)

• [X] Barcode Scanning
• [ ] Face Detection
• [ ] Face Mesh Detection
• [ ] Selfie Segmentation
• [ ] Translation

Did you test the latest version?

• [X] I use the latest version

Platform(s)

• [ ] Android
• [X] iOS
• [ ] Web

Current behavior

plugin does not scan a QR code when the phone is facing an angle of 30-45 degrees (previous plugin from capacitor worked OK)

Expected behavior

plugin scans correctly with the phone facing an angle of 30-45 degrees

Reproduction

Happens with any project/code

Steps to reproduce

1. Open the plugin
2. Put the phone in an angle like between 30 and 45 degrees
3. Try to scan a QR code

Other information

It happens with any project/code. We find it very odd that no one has reported it yet.

Capacitor doctor

-

Before submitting

• [X] I understand that incomplete issues (e.g. without reproduction) are closed.

[robingenz]

Please share an image for testing (I'm not sure if I'm allowed to post the picture from your email here).

[nicolasmohamed]

Here's an example. Thanks.

[robingenz]

Thank you! I will take a look at it.

[robingenz]

I can reproduce your issue with my demo app.

However, the problem does not seem to be the angle, but the QR code itself. It works for me with a different QR code at this angle. The problem should not be with the plugin but with the ML Kit Library. It does not recognize QR codes on this image. I have tried both with the camera and via FilePicker.

I am therefore closing this issue for the time being and recommend creating an issue in https://github.com/googlesamples/mlkit. Feel free to keep me up to date and link this issue.

[nicolasmohamed]

Ok Robin, will do. Just for the record, it was working OK with zxing implementation. We'll compile a legacy app. Cannot believe I'm writing this in nov-2023 but I understand it has nothing to do with this plugin. Thanks.