import { PermissionsAndroid } from 'react-native';

//...
const requestPermission = async () => {
  await PermissionsAndroid.request(
    PermissionsAndroid.PERMISSIONS.READ_EXTERNAL_STORAGE,
    {
      title: 'Get Read External Storage Access',
      message: 'get read external storage access for detecting screenshots',
      buttonNeutral: 'Ask Me Later',
      buttonNegative: 'Cancel',
      buttonPositive: 'OK',
    }
  );
};

import {
  addScreenshotListener,
  removeScreenshotListener,
} from 'react-native-detector';

// ...
React.useEffect(() => {
  const userDidScreenshot = () => {
    console.log('User took screenshot');
  };
  const unsubscribe = addScreenshotListener(userDidScreenshot);
  return () => {
    unsubscribe();
  };
}, []);