Build error when update Flutter project to Gradle 4.1 on Android Studio 3.0.1
This is happening on me every time I do flutter clean on a particular project.
My hack is to run (cd android/; ./gradlew flutterBuildX86Jar), which copies the missing file to the expected place.
Edit: Later I found out that the real problem was the order of the applied plugins. I added kotlin after creating project, and I need to apply kotlin plugin before flutter:
apply plugin: 'com.android.application'apply plugin: 'kotlin-android'apply plugin: 'kotlin-android-extensions'apply from: "$flutterRoot/packages/flutter_tools/gradle/flutter.gradle"
Have you followed the steps outlined in Updating Flutter projects to Gradle 4.1 and Android Studio Gradle plugin 3.0.1?
Also, you probably have to upgrade your flutter install to 0.0.20 or later, if you haven't done that already.