How to Update Kotlin Gradle Plugin for Your Flutter Project

How to Update Kotlin Gradle Plugin for Your Flutter Project

19 December 2024 Stephan Petzl Leave a comment Tech-Help

Updating the Kotlin Gradle plugin in your Flutter project is a common task, especially when you update your project to be null-safety compliant. If you’ve encountered a message indicating that your project requires a newer version of the Kotlin Gradle plugin, follow this step-by-step guide to resolve the issue effectively.

Understanding the Problem

After updating your Flutter project packages, Android Studio might prompt you to update your Kotlin Gradle plugin. This is typically due to discrepancies between the Kotlin version your project is using and the latest available version. The error message often suggests updating the Kotlin version in your build.gradle file.

Solution: Update Kotlin Version in Build Configuration

To solve this issue, you need to update the Kotlin version in the android/build.gradle file of your project. Follow these steps:

Step-by-Step Guide

  1. Open the android/build.gradle file in your Flutter project.
  2. Locate the line that specifies the Kotlin version:
  3. buildscript {
        ext.kotlin_version = '1.6.10' // Example version
        repositories {
            google()
            jcenter()
        }
        dependencies {
            classpath 'com.android.tools.build:gradle:4.1.0'
            classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
        }
    }
  4. Update the ext.kotlin_version to the latest version. As of the latest stable release, the version is 2.0.0. You can check for the most recent version on the Kotlin releases page.
  5. Run flutter clean and then flutter run to apply changes.

Additional Considerations

Ensure that the Gradle wrapper version is also compatible. You may need to update the gradle-wrapper.properties file to use a compatible distribution URL:

distributionUrl=https\://services.gradle.org/distributions/gradle-7.3-all.zip

For more detailed guidance on managing your Flutter project’s dependencies, you can refer to our article on Best Practices for Managing Constants in Flutter.

Streamlining Testing with Repeato

As you update and maintain your Flutter projects, automated testing becomes crucial to ensure stability and performance. This is where Repeato can significantly enhance your workflow. Repeato is a no-code test automation tool designed for iOS and Android, leveraging computer vision and AI to facilitate the creation, execution, and maintenance of automated tests. Whether you’re working with Flutter or native apps, Repeato’s intuitive interface allows you to quickly adapt your tests to code changes, ensuring your app remains robust across updates.

For more insights on how Repeato can optimize your testing processes, explore our comprehensive guide on Flutter Test Automation.

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