Solutions to Flutter error: Gradle task assembleDebug failed with exit code 1

For creating an apk for Android in Flutter this issue sometimes happens. I had the luck of facing this issue as well. Here are the few ways it can be solved:

1. Due to androidX

If you followed recommended route from here:
https://flutter.dev/docs/development/packages-and-plugins/androidx-compatibility

Try this:

Check with steps in “not recommended” way in above tutorial if every listed files is same as in your project, especially :

• in root/android/gradle/wrapper/gradle-wrapper.properties set distributionUrl=https\://services.gradle.org/distributions/gradle-7.10.0-all.zip
• in root/android/build.gradle, set
  dependencies { classpath 'com.android.tools.build:gradle:4.3.1' }
• check if in root/android/app/build.gradle SDK version is set to minimum 30 for:
  compileSdkVersion 30and targetSdkVersion 30

If you still get error then here is what helped me:

• delete .gradle and .m2 folders from $HOME directory, as well with in app folders: root/android/.gradle and root/build
• flutter doctor
• flutter clean
• flutter packages pub cache clean
• if you changed (as me) app icon then run:
  flutter packages pub run flutter_launcher_icons:main
  it will render icons for app - without it print same error with gradle..
• Invalidate caches in Android Studio "File" > "Invalidate Caches / Restart..."

Mac + Android Studio, in my case relatively special, following NOT work:

• try flutter doctor -v but all environment is OK
• set android.useAndroidX and android.enableJetifier to true
• change android device: real phone xiaomi9 / emulator Nexus 5/ emulator Pixel 2
• flutter clean
• change minSdkVersion from 16 to 21
• delete some (suspicious) dart code

and finally INDEED work by:

• reboot my Mac