Flutter 打包环境变量的配置

28 min read

创建配置文件

通过读取 flutter run --dart-define=DARTDEFINE_APP_ENV=debug 命令行的变量生成不一样的配置类

// 环境配置
class EnvConfig {
  final String appTitle;
  final String appDomain;
  EnvConfig({
    required this.appTitle,
    required this.appDomain,
  });
}

// 获取的配置信息
class Env {
  // 获取到当前环境
  static const appEnv = String.fromEnvironment(EnvName.envKey);

  // 开发环境
  static final EnvConfig _debugConfig = EnvConfig(
    appTitle: "debugTitle",
    appDomain: "http://www.debugxxx.com",
  );
  // 发布环境
  static final EnvConfig _releaseConfig = EnvConfig(
    appTitle: "releaseTitle",
    appDomain: "http://www.releasexxx.com",
  );
  // 测试环境
  static final EnvConfig _testConfig = EnvConfig(
    appTitle: "testTitle",
    appDomain: "http://www.testxxx.com",
  );

  static EnvConfig get envConfig => _getEnvConfig();

// 根据不同环境返回对应的环境配置
  static EnvConfig _getEnvConfig() {
    switch (appEnv) {
      case EnvName.debug:
        return _debugConfig;
      case EnvName.release:
        return _releaseConfig;
      case EnvName.test:
        return _testConfig;
      default:
        return _debugConfig;
    }
  }
}

// 声明的环境
abstract class EnvName {
  // 环境key
  static const String envKey = "DART_DEFINE_APP_ENV";
  // 环境value
  static const String debug = "debug";
  static const String release = "release";
  static const String test = "test";
}

读取环境变量的值

return Scaffold(
      appBar: AppBar(
        title: Text(Env.envConfig.appTitle),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Text(
              '配置的域名是：',
            ),
            Text(
              Env.envConfig.appDomain,
              style: Theme.of(context).textTheme.headline4,
            ),
          ],
        ),
      ),
    );

创建 IDEA 环境变量

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