Answers for "flutter build debug apk"

flutter You uploaded an APK or Android App Bundle that was signed in debug mode

buildTypes {
        release {
            // TODO: Add your own signing config for the release build.
            // Signing with the debug keys for now, so `flutter run --release` works.
            signingConfig signingConfigs.release
        }
    }
    // FLUTTER CLEAN AFTER THE EDIT

flutter build android release apk small

flutter build apk --split-per-abi

build apk flutter command

flutter clean
flutter build apk

flutter release

keytool -genkey -v -keystore c:\Users\USER_NAME\key.jks -storetype JKS -keyalg RSA -keysize 2048 -validity 10000 -alias key