ext.kotlin_version = '1.5.31'

To build a Flutter app for Android, Kotlin 1.5.31 or greater is required.

​

If your app uses a lower version, you will receive the following error message:

​

content_copy

┌─ Flutter Fix ────────────────────────────────────────────────────────────┐

│                                                                          │

│ [!] Your project requires a newer version of the Kotlin Gradle plugin.   │

│ Find the latest version on                                               │

│ https://kotlinlang.org/docs/gradle.html#plugin-and-versions, then update │

│ <path-to-app>/android/build.gradle:                                      │

│ ext.kotlin_version = '<latest-version>'                                  │

│                                                                          │

└──────────────────────────────────────────────────────────────────────────┘

​

​

Latest version of Kotlin is 1.6.

buildscript {

    ext.kotlin_version = '1.5.30'

    repositories {

        google()

        jcenter()

    }

    dependencies {

        classpath 'com.android.tools.build:gradle:4.2.0'

        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"

    }

}

​

...