# create a new project with "flutter create foo"
# then verify that the "version" field is present in pubspec.yaml

Richards-MacBook-Pro:foo richard$ grep "version:" pubspec.yaml
version: 1.0.0+1

# run an IOS build, specifying --build-name and --build-number

Richards-MacBook-Pro:foo richard$ flutter build ios --build-name=0.99 --build-number=97
Richards-MacBook-Pro:foo richard$ cat ./ios/Flutter/Generated.xcconfig
// This is a generated file; do not edit or check into version control.
FLUTTER_ROOT=/Users/richard/dev/flutter
FLUTTER_APPLICATION_PATH=/Users/richard/dev/foo
FLUTTER_TARGET=lib/main.dart
FLUTTER_BUILD_MODE=release
FLUTTER_BUILD_DIR=build
SYMROOT=${SOURCE_ROOT}/../build/ios
FLUTTER_FRAMEWORK_DIR=/Users/richard/dev/flutter/bin/cache/artifacts/engine/ios-release
FLUTTER_BUILD_NAME=0.99   <----- correct, as expected
FLUTTER_BUILD_NUMBER=97   <----- correct, as expected
Richards-MacBook-Pro:foo richard$

# the results are as expected on IOS
# the command-line parameters (--build-name and --build-number) correctly override the pubspec.yaml "version"

####

# the results on android, however, are incorrect.
# the command line parameters are ignored and the value from pubspec.yaml is used.

Richards-MacBook-Pro:foo richard$ rm android/local.properties
Richards-MacBook-Pro:foo richard$ grep "version:" pubspec.yaml
version: 1.0.0+1
Richards-MacBook-Pro:foo richard$ flutter build apk --build-name=0.99 --build-number=97
Richards-MacBook-Pro:foo richard$ cat android/local.properties
sdk.dir=/Users/richard/Library/Android/sdk
flutter.sdk=/Users/richard/dev/flutter
flutter.versionName=1.0.0   <--- incorrect
flutter.versionCode=1       <--- incorrect
flutter.buildMode=releaseRichards-MacBook-Pro:foo richard$
Richards-MacBook-Pro:foo richard$


# if we comment out the "version" tag in pubspec.yaml, then the build correctly
# pulls from the --build-name and --build-number settings

Richards-MacBook-Pro:foo richard$ vi pubspec.yaml
Richards-MacBook-Pro:foo richard$ grep "version:" pubspec.yaml
#version: 1.0.0+1
Richards-MacBook-Pro:foo richard$ flutter build apk --build-name=0.99 --build-number=97
Richards-MacBook-Pro:foo richard$ cat android/local.properties
sdk.dir=/Users/richard/Library/Android/sdk
flutter.sdk=/Users/richard/dev/flutter
flutter.versionName=0.99   <--- now correct
flutter.versionCode=97     <--- now correct
flutter.buildMode=releaseRichards-MacBook-Pro:foo richard$