App.js

import React from 'react';
import {
  SafeAreaView,
  ScrollView,
  StatusBar,
  StyleSheet,
  Text,
  View,
} from 'react-native';
import VoipPushNotification from 'react-native-voip-push-notification';
import {
  Colors,
  DebugInstructions,
  Header,
  LearnMoreLinks,
  ReloadInstructions,
} from 'react-native/Libraries/NewAppScreen';

const styles = StyleSheet.create({
  scrollView: {
    backgroundColor: Colors.lighter,
  },
  engine: {
    position: 'absolute',
    right: 0,
  },
  body: {
    backgroundColor: Colors.white,
  },
  sectionContainer: {
    marginTop: 32,
    paddingHorizontal: 24,
  },
  sectionTitle: {
    fontSize: 24,
    fontWeight: '600',
    color: Colors.black,
  },
  sectionDescription: {
    marginTop: 8,
    fontSize: 18,
    fontWeight: '400',
    color: Colors.dark,
  },
  highlight: {
    fontWeight: '700',
  },
  footer: {
    color: Colors.dark,
    fontSize: 12,
    fontWeight: '600',
    padding: 4,
    paddingRight: 12,
    textAlign: 'right',
  },
});

const App = () => {
  React.useEffect(() => {
    VoipPushNotification.requestPermissions(); // --- optional, you can use another library to request permissions
    VoipPushNotification.registerVoipToken(); // --- required

    VoipPushNotification.addEventListener('register', token => {
      // --- send token to your apn provider server
      console.log(token);
    });

    VoipPushNotification.addEventListener('localNotification', notification => {
      // --- when user click local push
      console.log(notification);
    });

    VoipPushNotification.addEventListener('notification', notification => {
      // --- when receive remote voip push, register your VoIP client, show local notification ... etc
      //this.doRegisterOrSomething();

      // --- This  is a boolean constant exported by this module
      // --- you can use this constant to distinguish the app is launched by VoIP push notification or not
      if (VoipPushNotification.wakeupByPush) {
        // this.doSomething()

        // --- remember to set this static variable back to false
        // --- since the constant are exported only at initialization time, and it will keep the same in the whole app
        VoipPushNotification.wakeupByPush = false;
      }

      /**
       * Local Notification Payload
       *
       * - `alertBody` : The message displayed in the notification alert.
       * - `alertAction` : The "action" displayed beneath an actionable notification. Defaults to "view";
       * - `soundName` : The sound played when the notification is fired (optional).
       * - `category`  : The category of this notification, required for actionable notifications (optional).
       * - `userInfo`  : An optional object containing additional notification data.
       */
      VoipPushNotification.presentLocalNotification({
        alertBody: 'hello! ' + notification.getMessage(),
      });
    });
  }, []);

  return (
    <>
      <StatusBar barStyle="dark-content" />
      <SafeAreaView>
        <ScrollView
          contentInsetAdjustmentBehavior="automatic"
          style={styles.scrollView}>
          <Header />
          {global.HermesInternal == null ? null : (
            <View style={styles.engine}>
              <Text style={styles.footer}>Engine: Hermes</Text>
            </View>
          )}
          <View style={styles.body}>
            <View style={styles.sectionContainer}>
              <Text style={styles.sectionTitle}>Step One</Text>
              <Text style={styles.sectionDescription}>
                Edit <Text style={styles.highlight}>App.js</Text> to change this
                screen and then come back to see your edits.
              </Text>
            </View>
            <View style={styles.sectionContainer}>
              <Text style={styles.sectionTitle}>See Your Changes</Text>
              <Text style={styles.sectionDescription}>
                <ReloadInstructions />
              </Text>
            </View>
            <View style={styles.sectionContainer}>
              <Text style={styles.sectionTitle}>Debug</Text>
              <Text style={styles.sectionDescription}>
                <DebugInstructions />
              </Text>
            </View>
            <View style={styles.sectionContainer}>
              <Text style={styles.sectionTitle}>Learn More</Text>
              <Text style={styles.sectionDescription}>
                Read the docs to discover what to do next:
              </Text>
            </View>
            <LearnMoreLinks />
          </View>
        </ScrollView>
      </SafeAreaView>
    </>
  );
};

export default App;