detector.isOperational() always false on android

Question

I\'m using the new google plays service: Barcode detector, for this porposue I\'m following this tutorial : https://search-codelabs.appspot.com/cod

Answer 1

It looks like the first time barcode detector is used on each device, some download is done by Google Play Services. Here is the link:

https://developers.google.com/vision/multi-tracker-tutorial

And this is the excerpt:

The first time that an app using barcode and/or face APIs is installed on a device, GMS will download a libraries to the device in order to do barcode and face detection. Usually this is done by the installer before the app is run for the first time.