shareSingle from react-native-share does not work for WhatsApp in Android 11

As of my knowledge cutoff date in September 2021, there have been some reported issues with the react-native-share library when sharing content to WhatsApp on Android 11 and newer versions. These issues are related to changes in Android's Scoped Storage and the way apps can access external files.

Here are a few things you can try to address the problem:

1. File Permissions: Make sure your app has the necessary permissions to access external files. In Android 11 and newer versions, apps need to request the MANAGE_EXTERNAL_STORAGE permission to access files outside their own app-specific directories. If your app doesn't have this permission, it may not be able to share files with WhatsApp. You can request this permission using React Native's PermissionsAndroid module.

2. Use Content URIs: Since Android 11, apps are encouraged to use Content URIs instead of file paths to share files with other apps. The react-native-share library should handle this internally, but ensure you are using the latest version of the library that supports Android 11 changes.

3. Check for Updated Versions: Make sure you are using the latest version of the react-native-share library, as newer releases may include fixes and improvements related to Android 11 compatibility.

4. Test on Different Devices: Test the sharing functionality on multiple devices running different Android versions to determine if the issue is specific to Android 11 or if it occurs on other versions as well.

5. Report the Issue: If the problem persists and you believe it is a bug with the react-native-share library, consider raising an issue on the library's GitHub repository. The maintainers and the community might be able to provide insights and solutions.

Please note that the information provided is based on the state of the react-native-share library up to September 2021. Since libraries and platform behavior can change over time, I recommend checking the library's GitHub repository and the React Native community for any updates, patches, or workarounds related to sharing content to WhatsApp on Android 11 or newer versions.