如何将环境变量添加到app.json文件

我的

Expo

项目中有一个

app.json

文件。在这个文件中，我有两个API键（下面标记为API_键），我想通过环境变量隐藏它们

如何使用环境变量而不是硬编码API键

app.json

{
  "expo": {
    "name": "Closeout",
    "slug": "Closeout",
    "version": "1.0.0",
    "orientation": "portrait",
    "privacy": "hidden",
    "notification": {
      "icon": "./assets/images/notification-icon.png",
      "color": "#000000",
      "iosDisplayInForeground": true
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": ["**/*"],
    "ios": {
      "icon": "./assets/images/icon.png",
      "buildNumber": "2",
      "config": {
        "googleMapsApiKey": "API_KEY"
      }
    },
    "android": {
      "adaptiveIcon": {
        "foregroundImage": "./assets/images/icon.png",
        "backgroundColor": "#000"
      },
      "versionCode": 5,
      "useNextNotificationsApi": true,
      "config": {
        "googleMaps": {
          "apiKey": "API_KEY"
        }
      },
      "googleServicesFile": "./google-services.json"
    }
  }
}

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