Native iOS and Android loading spinner (progress bar indicator) overlay
React Native Screen Overlay ActivityIndicator Progress Bar Example Tutorial
React Native Loading Spinner Overlay | SKPTRICKS
React Loading Spinner: How To Add Spinner In React
javascript - How do I overlay ActivityIndicator in react-native? - Stack Overflow
brentvatne/react-native-overlay: An <Overlay /> component that brings content inside to the front of the view regardless of its current position in the component tree.
Loading Spinner in React JS - Lara Tutorials
React Native Screen Overlay ActivityIndicator Progress Bar Example Tutorial