问在React-Native中，当用户安装应用程序但没有登录或注册时，如何发送通知？

EN

import React, { Component } from "react";
import { Text, View } from "react-native";
import firebase from "react-native-firebase";

export default class componentName extends Component {
  async componentDidMount() {
    this.checkPermission();
  }
  //1
  async checkPermission() {
    firebase
      .messaging()
      .hasPermission()
      .then((enabled) => {
        if (enabled) {
          this.getToken();
        } else {
          this.requestPermission();
        }
      });
  }

  //2
  async requestPermission() {
    firebase
      .messaging()
      .requestPermission()
      .then(() => {
        this.getToken();
      })
      .catch((error) => {});
  }

  //3
  async getToken() {
    fcmToken = await firebase.messaging().getToken();
    if (fcmToken) {
      // 
      // 
      // 
      // 
      // 
      //     Call your API here
      // 
      // 
      // 
      // 
      // 
      // 
    }
  }
  render() {
    return (
      <View>
        <Text> Your APP </Text>
      </View>
    );
  }
}