Steps to Reproduce

1. flutter create a new project with Android support.

2. Open the Android project in Android Studio/IntellIJ

3. Go to top-level build.gradle file and see warning with the clean Gradle task declaration:

   

   

Expected results:

No warnings.

Actual results:

The warning is present, which doesn't look good since the project has just been generated using the official tool.

Environment

$ flutter --version
Flutter 3.7.7 • channel stable • https://github.com/flutter/flutter.git
Framework • revision 2ad6cd72c0 (19 hours ago) • 2023-03-08 09:41:59 -0800
Engine • revision 1837b5be5f
Tools • Dart 2.19.4 • DevTools 2.20.1

Fix

It's pretty simple. Replace:

task clean(type: Delete) {
    delete rootProject.buildDir
}

with:

tasks.register("clean", Delete) {
    delete rootProject.buildDir
}