Is there a way to write snake case view ids in XML and use camel case variable names for the view in Kotlin while using Kotlin Android extensions plugin? I don’t won’t to break conventions and use camel case as view ids in XML, but it seems that there is no other way

no, you can use Android Data Binding instead

Would it make sense to only use it for views injection?

sure

You don't want this can of worms, called Databindings. You can easily achieve desired behavior via import aliases: import snake_case_id as camelCaseId. Now, it's an open question if it worth the trouble. A lot of people just switch to camelCase in XML (even Google is not consistent here). Alternatively, some people actually find snake_case in Kotlin useful, because it helps to visually distinguish your views from regular variables.

Worms?

import aliases could make sense if it can be automated somehow, but I think it should have been under the hood

I think Google just announced like a view binding lib during IO, you can take a look at the keynotes

yeah, saw that on Twitter yesterday. but I think it’s not available now… have to check release dates, but that is great news!