CODE EXAMPLE FOR JAVASCRIPT

react native prevent rotation of screen

If building your React Native apps with Expo then you can use the orientation field in your app.json file - for example:

{
  "expo": {
    "name": "My app",
    "slug": "my-app",
    "sdkVersion": "21.0.0",
    "privacy": "public",
    "orientation": "portrait"
  }
}