Focus in center/scanning box

[Melynt3]

Plugin(s)

• Barcode Scanning
• Face Detection
• Face Mesh Detection
• Selfie Segmentation
• Translation

Current problem

Im having a problem with losing focus with im zooming or moving my phone, camera is somehow focusing on other elements viewed in camera which sometimes is problematic

Preferred solution

Adding an option to set focus in scanning box or make it possible to focus only on center.

Alternative options

No response

Additional context

No response

Before submitting

• I have read and followed the feature request guidelines.
• I have attached links to possibly related issues and discussions.

[KoblerS]

I have the same problem with iPhone 15 pro max using the barcode functionality. Is there any way to enable autofocus?

[robingenz]

Not yet, but PRs are welcome.

[randy-johnson]

I tried giving this a whirl using the example code here: https://developers.google.com/ml-kit/vision/barcode-scanning/android#java

To enable auto-zooming and customize the experience, you can utilize the setZoomSuggestionOptions() method along with your own ZoomCallback handler and desired maximum zoom ratio, as demonstrated in the code below.

Here is the code in the file: https://github.com/randy-johnson/capacitor-mlkit/pull/1/files#diff-fc2cef0bd325278367eb925e138d31a998df13843c0885139505058aa5dd68deR414-R428

But I get this error when trying to install in my app:

[vite] Internal server error: Failed to resolve entry for package "@capacitor-mlkit/barcode-scanning". The package may have incorrect main/module/exports specified in its package.json.

Here is the line I added to my package.json

"@capacitor-mlkit/barcode-scanning": "github:randy-johnson/capacitor-mlkit/#autofocus",

I'll look into this more tomorrow as it is getting rather late here.

[randy-johnson]

@robingenz, how much would it would it take to sponsor autofocus? I am some issues getting a quality scan and I think it is because of the speed of the scans and the focus? Grabbing scanner app of the app store I can scan a bar code accurate every time but I am not having the same results with this plugin. From what I read focusing before it started taking the scan would prevent the bad scans.

[robingenz]

@randy-johnson Please take a look at After creating an issue.

[jacksonpietro]

Any updates on autofocus? I have a problem reading invoices from Brazil, and the reading difficulty seems to be related to the focus.

[randy-johnson]

We did not end up sponsoring this because it was only available on the Android side and we were having an issue on IOS as well. FWIW, we were able to use the Depracated version: https://github.com/capacitor-community/barcode-scanner and it suited our needs just fine. I am hoping in time the MLKit works better for us.

[jacksonpietro]

@randy-johnson Hey friend, thanks for the tip, I wouldn't have imagined that the deprecated version was working, and for me it also solves the problem. Thanks again for the tip. I also hope the current version provides this capability.