I'm trying to develop an Android Compose project in IntelliJ IDEA. I tried creating a new project i...

# compose

[Philip Dukhov]

I'm trying to develop an Android Compose project in IntelliJ IDEA.

I tried creating a new project in AS and updating the gradle plugin to version 4.2.2 - after sync in IDEA everything works as expected.

But in my actual project, the syntax highlighting doesn't work for any Compose code. The other Kotlin code highlighting/suggestions work fine, and the project also builds and runs fine.

When I hover over any @Composable function, it shows the following:

@[ERROR : Composable]
public fun Screen(): Unit

I didn't find any related errors in the gradle sync output, also filtering idea.log on the word "compose" didn't show anything interesting. What could be causing this problem? Is there a place where I can look for related logs?

[Colton Idle]

AGP 4.2.2 is old no? Isn't 7.0+ the default now?

I just created a new project on stable AS yesterday and had no issues. Let me check...

[Colton Idle]

Yep. Latest stable AS, using the blank activity with compose template uses AGP classpath "com.android.tools.buildG7.0.4"

and gradle

gradle-7.0.2-bin.zip

Just make sure to use the latest AS and I think you'll be all set. (use jetbrains toolbox if you want to manage your downloads (its built with compose for desktop 😃

[Chrimaeon]

The problem is that 7+ is not compatible with IDEA but only Android Studio. And Compose needs the 7+ Gradle plugin to work properly.

[Philip Dukhov]

@Colton Idle 4.2.2 is the latest version supported by IntelliJ IDEA, with any newer version sync doesn't work.

[Chrimaeon]

Any special reason @Philip Dukhov you are not using Android Studio?

[Philip Dukhov]

@Chrimaeon I assume the Compose Multiplatform plugin might help. And the highlighting in a newly created project works fine, I wonder how.

[Philip Dukhov]

@Chrimaeon I have a KMM project that includes a JVM based backend module. Inside this module I get an error Unresolved reference for JVM classes from the IDE, I already reported this AS issue. It's pretty weird since the error goes away and then comes back depending on AS or the kotlin plugin releases, not sure which ones, but it's still a problem with the latest versions. Inside IDEA I can develop my internal module with no problem, but I can't develop android. Also, there is noticeably less lag when working in IDEA.

[Chrimaeon]

I see, I have the same problem with Kotlin multi platform projects. I guess the error is with caching of Gradle dependencies and so on. Cleaning the Gradle cache usually solves the problem for me.

[Chrimaeon]

If that does not work I have both AS and IDEA open at the same time - not good for memory consumption but solves the import issue 😅

[Colton Idle]

I thought IDEA 2021.3 is supposed to have support for agp 7+?

[Joost Klitsie]

@Philip Dukhov no that is untrue, latest idea supports gradle 7

[Philip Dukhov]

wow, missed that, thanks @Colton Idle @Joost Klitsie!