Firebase Cloud Messaging (FCM) using Cordova FCM Plugin

Hybrid Development Cordova about 7 years ago || 7/26/2018 || 9.3 K View

Firebase Cloud Messaging (FCM) is the latest push notification service of Google. In this article, we will see how to integrate FCM in a Cordova project and send the notification to devices.

Create Cordova Project:

"cordova create push com.test.pushnotification push"

Setting Up FireBase:

Firstly, we must create an Android app in Firebase. Login to https://console.firebase.google.com with your google account.
Select “Add Project”.

Provide project name.
Click on Create Project.

Click on continue.

Select "Add Firebase to your Android App".

Provide your Android package name, here my package name is “com.test.pushnotification” and click on Register app.

Download "google-service.json".

And place "google-service.json" in to your project folder. In my case, my project folder is "D:\push"

Now, back to browser click on next.

Again, click on next.

Now, back to our command prompt. And add fcm Plugin by using following plugin.
"cordova plugin add cordova-plugin-fcm"

Now, change some lines in your “fcm_config_files_process.js”. You can find it on “plugin\corodva-plugin-fcm\scripts”. In my case, it is located at “D:\push\plugins\cordova-plugin-fcm\scripts”.

// change Line 58
fs.writeFileSync("platforms/android/google-services.json", contents);
		
// to
fs.writeFileSync("platforms/android/app/google-services.json", contents);

// Also

//change Line 61
var strings = fs.readFileSync("platforms/android/res/values/strings.xml").toString();

//to
var strings = fs.readFileSync("./platforms/android/app/src/main/res/values/strings.xml").toString();

//And
//change Line 78
fs.writeFileSync("platforms/android/res/values/strings.xml", strings);
//to
fs.writeFileSync("./platforms/android/app/src/main/res/values/strings.xml", strings);

Next, we have to write some client-side code to get Device token for push notifications. My Index.html is as follow:

<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Security-Policy" content="default-src 'self' data: gap: https://ssl.gstatic.com 'unsafe-eval'; style-src 'self' 'unsafe-inline'; media-src *; img-src 'self' data: content:;">
        <meta name="format-detection" content="telephone=no">
        <meta name="msapplication-tap-highlight" content="no">
        <meta name="viewport" content="user-scalable=no, initial-scale=1, maximum-scale=1, minimum-scale=1, width=device-width">
        <link rel="stylesheet" type="text/css" href="css/index.css">
        <title>Push Notification Test</title>
    </head>
    <body>
	<div id="divToken"></div>
        <div class="app">
            <h1>Apache Cordova</h1>
            <div id="deviceready" class="blink">
                <p class="event listening">Connecting to Device</p>
                <p class="event received">Device is Ready</p>
            </div>
        </div>
        <script type="text/javascript" src="cordova.js"></script>
        <script type="text/javascript" src="js/index.js"></script>
    </body>
</html>

Final Index.js is as follow:

var app = {
    initialize: function() {
        document.addEventListener('deviceready', this.onDeviceReady.bind(this), false);
    },
onDeviceReady: function() {
        this.receivedEvent('deviceready');
    },
receivedEvent: function(id) {
        var parentElement = document.getElementById(id);
        var listeningElement = parentElement.querySelector('.listening');
        var receivedElement = parentElement.querySelector('.received');

        listeningElement.setAttribute('style', 'display:none;');
        receivedElement.setAttribute('style', 'display:block;');
		FCMPlugin.onTokenRefresh(function(token){
            alert( token );
			var div = document.getElementById('divToken');
            div.innerHTML += token;
        });
        FCMPlugin.onNotification(
            function(data){
              if(data.wasTapped){
                //Notification was received on device tray and tapped by the user.
                alert( JSON.stringify(data) );
              }else{
                //Notification was received in foreground. Maybe the user needs to be notified.
                alert( JSON.stringify(data) );
              }
            },
            function(msg){
              console.log('onNotification callback successfully registered: ' + msg);
            },
            function(err){
              console.log('Error registering onNotification callback: ' + err);
            }
          );

        console.log('Received Event: ' + id);
    }
};
app.initialize();