I give up! Been trying to solve this shit for a week and still failed:

Using Android Data Binding, two-way binding and when I compile I receive this error:

Unknown class: java.lang.String

It was working without issues before upgrading Android Studio.

Anyone has a clue how to solve this shit?

By the way I'm using Kotlin, on Java it doesn't produce errors, and I'm not going to convert my project to Java ...

Update Android studio

Looks like you might be running into the same bug as this guy: https://bit.ly/2NovAUV

Unfortunately there's no solution posted there as of yet.

@thevariableman issue started after applying latest update lol Don't think that's an option

@AlmondSauce yup exactly like his reminds me of those rants that "exact same problem of mine but no solution FUUUUUUUCK" lol

@gitpush Yeah. Kotlin's a lot more stable and generally better than it used to be, but I've still seen enough corner cases / weird oddities floating around like this that means I haven't yet committed any projects to it.

@AlmondSauce but what I don't understand it was all working without issues until the latest update. They even have kotlin samples for data binding in their docs, I replicated their example and it still doesn't work.

On top of that, Android Studio tells me error on line 85, but the two-way binding is on line 84 + line 85 is empty.

I removed gradle, .gradle, .idea invalidate cache and restart and still same issue, I disabled two-way binding and it just worked, but doing so means I need to modify lots of places in my app and that's not an option

This tends to happen to me when I compile project with j6 and run it with j9. Java version, java_home -- all looking correct?

@netikras Indeed I had some java and android dependencies causing this, which is fixed, now the problem is this:

Type mismatch: inferred type is DataLayer.Models.Address? but PACKAGE_NAME.DataLayer.Models.Address? was expected

I cannot understand that's my own damn model why data binding is ignoring initial package name?