反应本机获取ios设备语言

我正在尝试从ios设备获取当前区域设置

当我创建我的项目并使用expo时，我遵循了这一点

我尝试了以下代码

 if (Platform.OS === "android") {
     langRegionLocale = NativeModules.I18nManager.localeIdentifier || "";
 } else if (Platform.OS === "ios") {
     langRegionLocale = NativeModules.SettingsManager.settings.AppleLocale || "";
 }

而且它在android上运行，但在iPhone上测试时，它不起作用，并且在我登录时说设置管理器未定义

如何在不弹出或使用的情况下获取ios的当前区域设置

如果可能的话，我想使用内置的东西

下面是我的包。json

 {
  "name": "demoapp",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "react-native-scripts": "1.5.0",
    "jest-expo": "^21.0.2",
    "react-test-renderer": "16.0.0-alpha.12"
  },
  "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
  "scripts": {
    "start": "react-native-scripts start",
    "eject": "react-native-scripts eject",
    "android": "react-native-scripts android",
    "ios": "react-native-scripts ios",
    "test": "node node_modules/jest/bin/jest.js --watch"
  },
  "jest": {
    "preset": "jest-expo"
  },
  "dependencies": {
    "expo": "^21.0.0",
    "react": "16.0.0-alpha.12",
    "react-native": "^0.48.4",
    "react-navigation": "^1.0.0-beta.13",
    "react-redux": "^5.0.6",
    "redux": "^3.7.2",
    "redux-thunk": "^2.2.0"
  }
}

Expo有一种获取设备区域设置的方法

返回当前设备 区域设置为字符串

Expo有一种获取设备区域设置的方法

返回当前设备 区域设置为字符串