Syntax highlighting fails in Kotlin Multiplatform project

Question

I have generated a new Kotlin Multiplatform Mobile (KMM) project with Android Studio. I am able to do the following things successfully:

Sync project with Gradle files
Build project for Android and iOS
Run Android and iOS apps successfully
Command + hover over certain declarations to see method signatures/documentation

The issue is that syntax highlighting is not working. I see IDE hints, as seen in the image below, but still, there are red marks under everything.

I have tried the following

Sync project with Gradle files (in case anything was out of sync)
Build > Rebuild Project
File > Invalidate Caches / Restart ...
Reinstall Android Studio (several times)
Deleted various folders, like ~/.android, cached folders, et cetera

but none of these have worked.

I have the following versions:

Android Studio: 4.2 Canary 16
Kotlin plugin: 1.4.20-release-Studio4.2-1
KMM plugin: 0.2.0-release-65-Studio4.2

This is all boilerplate code generated by the KMM plugin for Android Studio, so I'll hold off with posting any code unless anyone wants me to.

What could be the issue?

I know it sounds a bit silly, but I reproduced the problem, then my AS got corrupted(like that), I reinstalled it from scratch and now everything works fine. Please try reinstalling your Canary, or opening the project with AS 4.1.1. — Artyom Degtyarev
– Artyom Degtyarev, Commented Nov 25, 2020 at 15:01
Yeah, after posting this I tried re-installing several times with luck. But I'll post an answer, because I fixed it this morning by going to File > Manage IDE Settings > Restore Default Settings. — eirikvaa
– eirikvaa, Commented Nov 26, 2020 at 10:10
That's great you finally fixed it. Ordinary re-installation worked badly for me too, only removing whole my ~/Library/Application\ Support/Google/AndroidStudioPreview4.2/ helped. Your solution is even better. I'll try to find an appropriate ticket on Kotlin's YouTrack for this, or open a new one referring to this question. — Artyom Degtyarev
– Artyom Degtyarev, Commented Nov 26, 2020 at 10:27

eirikvaa · Accepted Answer · 2024-11-22 23:22:12Z

2

Update: Use the suggestion below as a last resort. Instead, try following the built-in troubleshooting guide in Android Studio.

I solved the issue by going to File > Manage IDE Settings and clicking Restore Default Settings. Then it restarted, took me through the Android Studio setup wizard, and when launching the project syntax highlighting worked as expected.

edited Nov 22, 2024 at 23:22

answered Nov 26, 2020 at 10:11

eirikvaa

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5 Comments

Ahmad Reza Enshaee Over a year ago

IMPORTANT: Remember to export your settings. You're gonna lose everything even your plugins when you do this. And it didn't work for me.

Warren Goldman Over a year ago

same, this is not a good solution, wacked all my plugins. didn't fix issue.

eirikvaa Nov 22, 2024 at 23:19

Agreed, this is not a good solution and was proposed when I was still an Android Studio rookie.

Rucha Bhatt Joshi Feb 1 at 12:00

this works for me I'm using Android Studio Ladybug Feature Drop | 2024.2.2

Rucha Bhatt Joshi Feb 1 at 12:10

update: (As I can't edit above comment) The above solution removes all the installed plugins and solves the issue, so the actual problem was the SqlDelight plugin in my case here: stackoverflow.com/questions/29827067/…

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