I am having an issue with the new Compose version (0.1.0-dev15) in Android Studio. My project builds...

# compose

[Julius Marozas]

I am having an issue with the new Compose version (0.1.0-dev15) in Android Studio. My project builds fine, but Studio shows warnings near things such as `MaterialTheme.colors.surface`:

'surface: Color' is only available since Kotlin 1.4 and cannot be used in Kotlin 1.3

I have also set the "Update channel" in Languages & Frameworks > Kotlin (Android Studio settings) to "Early Access Preview 1.4.x".

[allan.conda]

update your kotlin https://developer.android.com/jetpack/androidx/releases/compose

[Julius Marozas]

Yeah, I've already done that.

However, I am using Gradle Kotlin DSL, maybe that's where the problem is? I have also defined Kotlin version in a different Kotlin file as a constant. So perhaps Android Studio fails to resolve the version for some reason, even though Gradle builds with no problems.

[ppvi]

@Julius Marozas did you find a solution?

[Julius Marozas]

No, but I was thinking that I could hardcode the Kotlin version instead of using a constant. Maybe that could fix it? I will try it later today.

[ppvi]

Make sure you've updated kotlinCompilerVersion

[ppvi]

check out jetnews

[ppvi]

also, does the app succeed when building from CLI?

[Julius Marozas]

@ppvi Sorry for the late response. I couldn't find a way to fix the errors in Android Studio. I have already updated kotlinCompilerVersion and kotlinCompilerExtensionVersion and the app builds without errors with gradle assembleDebug.

[Julius Marozas]

@ppvi I think I fixed it! I added the following to kotlinOptions in KotlinCompile task:

languageVersion = "1.4"

Maybe this can be added to the documentation?

[ppvi]

jetnews works and it has the same setup as the docs

[Julius Marozas]

Strange, because I get errors without specifying languageVersion. Perhaps something is working differently in Kotlin Gradle scripts build.gradle.kts than with normal Gradle scripts build.gradle?

[Adrian Blanco]

Seconded. I had to add languageVersion as well to get dev15 to work. I am using a lot of modules, with a bit of Gradle kts