Example

import React, { Component } from 'react';
import { ActivityIndicator, StyleSheet, Text, View } from 'react-native';

export default class App extends Component {
  render() {
    return (
      <View style={[styles.container, styles.horizontal]}>
        <ActivityIndicator size="large" color="#0000ff" />
        <ActivityIndicator size="small" color="#00ff00" />
        <ActivityIndicator size="large" color="#0000ff" />
        <ActivityIndicator size="small" color="#00ff00" />
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
  },
  horizontal: {
    flexDirection: 'row',
    justifyContent: 'space-around',
    padding: 10,
  },
});

Reference

Props

animating

color

hidesWhenStopped

size