Understanding the Compatibility Between Flutter and Kotlin Gradle Plugin

The compatibility between Flutter and the Kotlin Gradle plugin is important in order to ensure smooth integration and build processes. The Android Gradle plugin in Flutter requires a specific version of the Kotlin Gradle plugin to function correctly.

Version Compatibility

The Android Gradle plugin in Flutter supports only Kotlin Gradle plugin version 1.5.20 and higher. Using a lower version might result in build errors or compatibility issues.

Example

Let’s take a look at an example to understand this better:

        
buildscript {
    repositories {
        google()
        // other repositories
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:7.0.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.20"
        // other dependencies
    }
}

// other configurations
        
    

In the example above, we have the build.gradle file which defines the dependencies for the project. The Kotlin Gradle plugin version 1.5.20 is specified in the classpath along with the Android Gradle plugin version 7.0.2.

Ensure that you have both the Android Gradle plugin and the Kotlin Gradle plugin declared in the build.gradle file of your Flutter project and that the specified versions are supported by each other.