Ionic Capacitor Push Notifications with Firebase: A Step-by-Step Guide

{
  "appId": "com.appdactic.devpush",
  "appName": "pushApp",
  "bundledWebRuntime": false,
  "npmClient": "npm",
  "webDir": "www",
  "plugins": {
    "SplashScreen": {
      "launchShowDuration": 0
    },
    "PushNotifications": {
      "presentationOptions": ["badge", "sound", "alert"]
    }
  },
  "cordova": {}
}

target 'App' do
  capacitor_pods
  # Add your Pods here
  pod 'Firebase/Messaging'
end

import UIKit
import Capacitor
import Firebase

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

  var window: UIWindow?

  func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.
    FirebaseApp.configure()
    return true
  }

  // All the existing functions
  // ...

  // Update this one:
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        Messaging.messaging().apnsToken = deviceToken
        InstanceID.instanceID().instanceID { (result, error) in
            if let error = error {
                NotificationCenter.default.post(name: Notification.Name(CAPNotifications.DidFailToRegisterForRemoteNotificationsWithError.name()), object: error)
            } else if let result = result {
                NotificationCenter.default.post(name: Notification.Name(CAPNotifications.DidRegisterForRemoteNotificationsWithDeviceToken.name()), object: result.token)
            }
        }
    }
}

import { NgModule } from '@angular/core';
import { PreloadAllModules, RouterModule, Routes } from '@angular/router';

const routes: Routes = [
  {
    path: 'home',
    loadChildren: () => import('./home/home.module').then( m => m.HomePageModule)
  },
  {
    path: '',
    redirectTo: 'home',
    pathMatch: 'full'
  },
  {
    path: 'home/:id',
    loadChildren: () => import('./pages/details/details.module').then( m => m.DetailsPageModule)
  },
];

@NgModule({
  imports: [
    RouterModule.forRoot(routes, { preloadingStrategy: PreloadAllModules })
  ],
  exports: [RouterModule]
})
export class AppRoutingModule { }

import { Injectable } from '@angular/core';
import {
  Plugins,
  PushNotification,
  PushNotificationToken,
  PushNotificationActionPerformed,
  Capacitor
} from '@capacitor/core';
import { Router } from '@angular/router';

const { PushNotifications } = Plugins;

@Injectable({
  providedIn: 'root'
})
export class FcmService {

  constructor(private router: Router) { }

  initPush() {
    if (Capacitor.platform !== 'web') {
      this.registerPush();
    }
  }

  private registerPush() {
    PushNotifications.requestPermission().then((permission) => {
      if (permission.granted) {
        // Register with Apple / Google to receive push via APNS/FCM
        PushNotifications.register();
      } else {
        // No permission for push granted
      }
    });

    PushNotifications.addListener(
      'registration',
      (token: PushNotificationToken) => {
        console.log('My token: ' + JSON.stringify(token));
      }
    );

    PushNotifications.addListener('registrationError', (error: any) => {
      console.log('Error: ' + JSON.stringify(error));
    });

    PushNotifications.addListener(
      'pushNotificationReceived',
      async (notification: PushNotification) => {
        console.log('Push received: ' + JSON.stringify(notification));
      }
    );

    PushNotifications.addListener(
      'pushNotificationActionPerformed',
      async (notification: PushNotificationActionPerformed) => {
        const data = notification.notification.data;
        console.log('Action performed: ' + JSON.stringify(notification.notification));
        if (data.detailsId) {
          this.router.navigateByUrl(`/home/${data.detailsId}`);
        }
      }
    );
  }
}

import { Component } from '@angular/core';

import { Platform } from '@ionic/angular';
import { SplashScreen } from '@ionic-native/splash-screen/ngx';
import { StatusBar } from '@ionic-native/status-bar/ngx';
import { FcmService } from './services/fcm.service';

@Component({
  selector: 'app-root',
  templateUrl: 'app.component.html',
  styleUrls: ['app.component.scss']
})
export class AppComponent {
  constructor(
    private platform: Platform,
    private splashScreen: SplashScreen,
    private statusBar: StatusBar,
    private fcmService: FcmService
  ) {
    this.initializeApp();
  }

  initializeApp() {
    this.platform.ready().then(() => {
      this.statusBar.styleDefault();
      this.splashScreen.hide();

      // Trigger the push setup
      this.fcmService.initPush();
    });
  }
}

import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { Plugins } from '@capacitor/core';
const { PushNotifications } = Plugins;

@Component({
  selector: 'app-details',
  templateUrl: './details.page.html',
  styleUrls: ['./details.page.scss'],
})
export class DetailsPage implements OnInit {
  id = null;

  constructor(private route: ActivatedRoute) { }

  ngOnInit() {
    this.route.paramMap.subscribe(params => {
      this.id = params.get('id');
    });
  }

  resetBadgeCount() {
    PushNotifications.removeAllDeliveredNotifications();
  }

}

<ion-header>
  <ion-toolbar>
    <ion-buttons slot="start">
      <ion-back-button defaultHref="/"></ion-back-button>
    </ion-buttons>
    <ion-title>Details</ion-title>
  </ion-toolbar>
</ion-header>

<ion-content>
  My Id from push: {{ id }}

  <ion-button (click)="resetBadgeCount()" expand="block">
    Reset Badge Count
  </ion-button>
</ion-content>

const request = require('request');

const serverKey = 'YOUR_SERVER_KEY';
const deviceToken = 'YOUR_DEVICE_TOKEN';

const options = {
  method: 'POST',
  url: 'https://fcm.googleapis.com/fcm/send',
  headers: {
    'Content-Type': 'application/json',
    Authorization: 'key=' + serverKey
  },
  body: JSON.stringify({
    to: deviceToken,
    notification: {
      title: 'Test Push',
      body: 'This is a test push notification with custom data'
    },
    data: {
      detailsId: '123'
    }
  })
};

request(options, (error, response, body) => {
  if (error) {
    console.error('Error sending push:', error);
  } else {
    console.log('Push sent successfully:', body);
  }
});