I cant see the preview of the arc

I cant see the preview of the arc when the app is pushed to device.
I can see the preview in the android studio but while run time it shows nothing to me

Im not sure if i have added everything that is need ,
I just added the library through gradel and copied the xml part and tried to run but it shows nothing...

Start by checking the Gradle library dependency and the copied XML layout, then compare the Android Studio preview with the app running on the device. Confirm that the arc renders at runtime; the issue does not name specific files, tests, logs, or a reproducible example.

Scritto dal modello di indicizzazione a partire dal testo della issue.