I am currently developing a hybrid app. Where communication with backend, image manipulation, interaction with settings+security features of the platform -- are

I am currently developing a hybrid app. Where communication with backend, image manipulation, interaction with settings+security features of the platform -- are in Android Java. While the basic data entry / data presentation forms are in React-native. I would not mind switching the Android Java side -- to Xamarin, but will I still be able to have a portion of my app in React Native? Are there any open source examples that use Xamarin and React-native?