Trying to build android meet app kotlin error

Developers
,
#1

Hello I’m facing the following error when building the android portion

‘let((T) → R): R’ is only available since Kotlin 1.3.50 and cannot be used in Kotlin 1.3

on line react-native-screens/Screen.kt at 6c87d7749ec62fbb51fb4ec50af1fa8733ebae86 · software-mansion/react-native-screens · GitHub

In Android Studio settings shows using Kotlin 1.6 in the compiler settings and when I set a project variable kotlinVersion in build.gradle to 1.6.10 I still get the same error.

#2

DId you make any changes to the app? We haven’t had any issues building the latest release.

#3

No I hadn’t made any changes. But I found that I only get the error building in android studio, npx react-native run-android works fine.

#4

That’s odd, I build the app with Android Studio and have not seen this :open_mouth:

#5

Ok I found a solution but now facing an other issue.

The solution to get it to build:

buildscript {
    ext.kotlin_version = '1.4.10'
    repositories {
        google()
        mavenCentral()
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:4.2.2'
        classpath 'com.google.gms:google-services:4.3.10'
        classpath 'com.google.firebase:firebase-crashlytics-gradle:2.8.1'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

ext {
  ...
  kotlinVersion = "$kotlin_version"
}

But when running I face:

Screen Shot 2022-03-29 at 11.46.18 AM
Screen Shot 2022-03-29 at 11.46.18 AM618×1262 213 KB

#6

I only got the “Unable to load script.” once.

Also ext.kotlin_version = '1.6.10' works as well and you don’t get a warning about 1.4.10 not matching the bundled IDE version.

#7

If you are running the app in debug mode, you need to have the Metro bundler started. This is done by default, a new terminal window should have popped up when you hit run in Android Studio.

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