import { Platform } from 'react-native';
const config = { server: Platform.select({ ios: '127.0.0.1', // or 'localhost' android: '10.0.2.2', }), };
config.apiEndpoint = http://${config.server}:port/api;
Explanation: iOS Simulators use the same environment as our programming environment (your computer), while Android emulators set up a new device with a different IP address, so their localhost doesn't match ours.