Flutter 项目中 Android、iOS 和 Dart 之间的共享常量

Question

Is there any workaround to share constant variables between the android,iOS and dart code? This can be especially useful when using Platform Channels as the Channel name, method names and argument key names are kept in a constants file and alternately the same file is created in kotlin and swift to match. Can we avoid this duplication by keeping a common file that can be shared and accessed by the 3 platforms?

Answer 1

• you can use flutter run —dart-define MY_DATA=SomeString. see

• example

static class AppConfig{
  static const String MY_DATA= String.fromEnvironment("MY_DATA",
      defaultValue: 'initValue');
}

void test(){
     print(AppConfig.MY_DATA);
}

Answer 2

Regarding unified Platform Channels usage pigeon package could be used to simplify the whole process. But for now, it does not resolve in particular constants sharing.