App.js

App.js simplified to the essential for push-notifications demo purpose

import React from 'react';
import {
  SafeAreaView,
  StyleSheet,
  View,
  Text,
  StatusBar,
  TouchableOpacity,
} from 'react-native';

class App extends React.Component {

  render() {
    return (
      <>
        <StatusBar barStyle="dark-content" />
        <SafeAreaView style={styles.body}>
          <TouchableOpacity
            accessibilityRole={'button'}
            onPress={() => console.log(Notification in 10 seconds)}
            style={styles.linkContainer}>
            <Text style={styles.link}>Notification in 10 seconds</Text>
          </TouchableOpacity>
          <View style={styles.separator} />
          <TouchableOpacity
            accessibilityRole={'button'}
            onPress={() => console.log(Notification now)}
            style={styles.linkContainer}>
            <Text style={styles.link}>Notification now</Text>
          </TouchableOpacity>
        </SafeAreaView>
      </>
    );
  }
}

const styles = StyleSheet.create({
  body: {
    backgroundColor: '#333',
    justifyContent: 'space-around',
    alignItems: 'center',
    flex: 1,
    height: '100%',
  },
  container: {
    marginTop: 32,
    paddingHorizontal: 24,
  },
  linkContainer: {
    justifyContent: 'center',
    alignItems: 'center',
    paddingVertical: 8,
    backgroundColor: '#ddd',
    borderRadius: 40,
    height: 40,
    width: '80%',
  },
  link: {
    flex: 2,
    fontSize: 18,
    fontWeight: '400',
    color: '#333',
    justifyContent: 'center',
    alignItems: 'center',
  },
  separator: {
    backgroundColor: '#ddd',
    height: 1,
    width: '100%',
  },
});

export default App;