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Fixing Build Failure in Flutter

Fix: Android Gradle Plugin (AGP) Version Issue​

Error​

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Cause​

This is likely due to a known bug in Android Gradle Plugin (AGP) versions less than 8.2.1,

Solution: Update AGP to 8.2.1 or Higher​

Step 1. Upgrade Android Gradle Plugin (AGP)​

Modify your android/build.gradle file:

  • Open <app_directory>\android\settings.gradle
  • Find this line:
classpath 'com.android.application:X.X.X'

Update it to:

classpath 'com.android.application:8.2.1' // Or a higher version
note

If you use older version, it may be in <app_directory>\android\build.gradle, look for the "com.android.tools.build:gradle:" version and update it.

2. Update the Gradle Wrapper​

  • Open <app_directory>/android/gradle/wrapper/gradle-wrapper.properties
  • Update the Gradle version:
distributionUrl=https\://services.gradle.org/distributions/gradle-X.X.X-bin.zip

3. Sync and Rebuild​

Run the following commands in your terminal:

flutter clean
flutter pub get
flutter run

Error​

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Solution: Enable Developer Mode on Windows​

  • Open Command Prompt and run:
start ms-settings:developers
  • Enable Developer Mode and restart your system if prompted.