> For the complete documentation index, see [llms.txt](https://openai.gitbook.io/code-cheatsheets/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://openai.gitbook.io/code-cheatsheets/react/all/react_native/orientation.md).

# Orientation

```ts
import * as ScreenOrientation from 'expo-screen-orientation';

//...
  useEffect(() => {
    //lock screen orientation to portrait
    (async () => {
      await ScreenOrientation.lockAsync(ScreenOrientation.OrientationLock.PORTRAIT);
    })();
  }, []);
```