您可以使用package_info。

这些版本摘自：

Android：

build.gradle, versionCode and versionName

iOS：

Info.plist, CFBundleVersion

用法

添加依赖项

1. 将此添加到包的pubspec.yaml文件中：

    dependencies:
      package_info: ^0.4.0+16

1. 将文件导入到dart文件中：

   import ‘package:package_info/package_info.dart’;

2. 如果您的方法标记为async：

    PackageInfo packageInfo = await PackageInfo.fromPlatform();

    String appName = packageInfo.appName;
    String packageName = packageInfo.packageName;
    String version = packageInfo.version;
    String buildNumber = packageInfo.buildNumber;

如果您不想使用await/async：

    PackageInfo.fromPlatform().then((PackageInfo packageInfo) {
      String appName = packageInfo.appName;
      String packageName = packageInfo.packageName;
      String version = packageInfo.version;
      String buildNumber = packageInfo.buildNumber;
    });