嘿再次@masterAvatarr，
我相信这就是你要找的，如果你需要别的东西，请向我解释：）我们可以让它发生。
我给你举了个简单的例子。
https://github.com/WrathChaos/react-native-portrait-locker-example
我使用React Native Orientation Locker Library
重要的部分是：

• 确保您手动链接了库（选中AppDelegate.m）
• 您需要根据您的使用情况制定解锁和锁定纵向模式的逻辑

请查看HomeScreen和DetailScreen

import Orientation from "react-native-orientation-locker";

React.useEffect(() => {
    const unsubscribe = navigation.addListener("focus", () => {
      // The screen is focused
      // Call any action
      Orientation.unlockAllOrientations();
      Orientation.lockToPortrait();
    });

    // Return the function to unsubscribe from the event so it gets removed on unmount
    return unsubscribe;
  }, [navigation]);

**注意：**Github Repo上有一个小GIF Demo

我建议https://www.npmjs.com/package/expo-screen-orientation
安装库使用

npm install expo-screen-orientation

然后在主入口文件（可以是app.js或index.js）上

import * as ScreenOrientation from "expo-screen-orientation";

然后执行以下操作以将方向锁定为横向。

export default function App() {

  //Locking Orientation
  const [orientation, setOrientation] = useState(1);
  useEffect(() => {
    lockOrientation();
  }, []);
  const lockOrientation = async () => {
    await ScreenOrientation.lockAsync(
      ScreenOrientation.OrientationLock.LANDSCAPE_RIGHT
    );
    const o = await ScreenOrientation.getOrientationAsync();
    setOrientation(o);
  };
//REST OF THE CODE
  return (
    <Components></Components>
  );
});