index.js

import {AppRegistry} from 'react-native';
import App from './App';
import {name as appName} from './app.json';
import PushNotification from 'react-native-push-notification';

// Must be outside of any component LifeCycle (such as `componentDidMount`).
PushNotification.configure({
  // (required) Called when a remote is received or opened, or local notification is opened
  onNotification: function (notification) {
    console.log('NOTIFICATION:', notification);

    // (required) Called when a remote is received or opened, or local notification is opened
  },

  // (optional) Called when Registered Action is pressed and invokeApp is false, if true onNotification will be called (Android)
  onAction: function (notification) {
    console.log('ACTION:', notification.action);
    console.log('NOTIFICATION:', notification);

    // process the action
  },

  // (optional) Called when the user fails to register for remote notifications. Typically occurs when APNS is having issues, or the device is a simulator. (iOS)
  onRegistrationError: function (err) {
    console.error(err.message, err);
  },

  // Should the initial notification be popped automatically
  // default: true
  popInitialNotification: true,

  /**
   * (optional) default: true
   * - Specified if permissions (ios) and token (android and ios) will requested or not,
   * - if not, you must call PushNotificationsHandler.requestPermissions() later
   * - if you are not using remote notification or do not have Firebase installed, use this:
   *     requestPermissions: Platform.OS === 'ios'
   */
  requestPermissions: true,
});

AppRegistry.registerComponent(appName, () => App);