flutter build apk --dart-define=APP_CHANNEL=xxx-channel --dart-define=OTHER_VAR=Dart(optional) --target-platform android-arm,android-arm64,android-x64 --split-per-abi
小米
flutter build apk --dart-define=APP_CHANNEL=xiaomi --target-platform android-arm64 --split-per-abi
华为
flutter build apk --dart-define=APP_CHANNEL=huawei --target-platform android-arm64 --split-per-abi
亚马逊
flutter build apk --dart-define=APP_CHANNEL=amazon --target-platform android-arm64 --split-per-abi
三星
flutter build apk --dart-define=APP_CHANNEL=samsung --target-platform android-arm64 --split-per-abi
Google
flutter build appbundle --dart-define=APP_CHANNEL=google --target-platform android-arm64 --split-per-abi