FirebaseService, onMessageReceived, FirebaseInstanceIdService, onTokenRefresh, sendRegistrationToServer

This is a real demenostration of how to use Android Studio with kotlin and wordpress to implement push notification using FirebaseService, onMessageReceived, FirebaseInstanceIdService, onTokenRefresh, sendRegistrationToServer

Folowing up with the previous article is required:
https://ahmadnaser.com/android-wordpress-blog-project-kotlin-volley-retrofit2-gson-okhttp-picasso-ahbottomnavigation/

Then you will be ready to proceed with this step by reserving yours gbeapis
1-reserve your WordPress hosting from greenbackend and get your wordpress greenbackend api license
http://greenbackend.com/developer-hosting

2-ADD the following permissoins and services to the manifest

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.VIBRATE" />
    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
    <uses-permission android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT" />
    <uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

<uses-permission android:name="android.permission.INTERNET" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />

<uses-permission android:name="android.permission.VIBRATE" />

<uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />

<uses-permission android:name="com.android.launcher.permission.UNINSTALL_SHORTCUT" />

<uses-permission android:name="com.google.android.c2dm.permission.RECEIVE" />

     <service
            android:name=".Services.GreenFirebaseService"
        android:enabled="true"
        android:exported="true"
            >
            <intent-filter>
                <action android:name="com.google.firebase.MESSAGING_EVENT" />

            </intent-filter>

        </service>
        <service
            android:name=".Services.FirebaseInstanceIDService"
            android:enabled="true"
            android:exported="true"
            >
            <intent-filter>
                <action android:name="com.google.firebase.INSTANCE_ID_EVENT"/>
            </intent-filter>
        </service>

<service

android:name=".Services.GreenFirebaseService"

android:enabled="true"

android:exported="true"

<intent-filter>

</intent-filter>

</service>

<service

android:name=".Services.FirebaseInstanceIDService"

android:enabled="true"

android:exported="true"

<intent-filter>

</intent-filter>

</service>

3- FirebaseInstanceIDService

package com.ahmadnaser.gbeapiswpblogdemo.Services

import android.util.Log

import com.google.firebase.iid.FirebaseInstanceId
import com.google.firebase.iid.FirebaseInstanceIdService
import com.google.firebase.messaging.FirebaseMessaging


class FirebaseInstanceIDService  : FirebaseInstanceIdService() {

    val TAG = FirebaseInstanceIDService::class.java.simpleName!!


    override fun onCreate() {
        super.onCreate()
        Log.d(TAG, "onCreate contact firebase instance service");
    }

    override fun onTokenRefresh() {
        Log.d(TAG, "onTokenRefresh")
        val refreshedToken = FirebaseInstanceId.getInstance().token
        // we want to send messages to this application instance and manage this apps subscriptions on the server side
        // so now send the Instance ID token to the app server
        refreshedToken?.let {
            sendRegistrationToServer(it)
        }
    }

    companion object {
        const val TAG = "GibbyInstanceIdService"
    }


    private fun sendRegistrationToServer(refreshedToken: String) {
        Log.d(TAG, "Refreshed token: $refreshedToken - send this to server?")
        FirebaseMessaging.getInstance().subscribeToTopic("global")
    }

}

package com.ahmadnaser.gbeapiswpblogdemo.Services

import android.util.Log

import com.google.firebase.iid.FirebaseInstanceId

import com.google.firebase.iid.FirebaseInstanceIdService

import com.google.firebase.messaging.FirebaseMessaging

class FirebaseInstanceIDService : FirebaseInstanceIdService() {

val TAG = FirebaseInstanceIDService::class.java.simpleName!!

override fun onCreate() {

super.onCreate()

Log.d(TAG, "onCreate contact firebase instance service");

}

override fun onTokenRefresh() {

Log.d(TAG, "onTokenRefresh")

val refreshedToken = FirebaseInstanceId.getInstance().token

// we want to send messages to this application instance and manage this apps subscriptions on the server side

// so now send the Instance ID token to the app server

refreshedToken?.let {

sendRegistrationToServer(it)

}

companion object {

const val TAG = "GibbyInstanceIdService"

}

private fun sendRegistrationToServer(refreshedToken: String) {

Log.d(TAG, "Refreshed token: $refreshedToken - send this to server?")

FirebaseMessaging.getInstance().subscribeToTopic("global")

}

4- GreenFirebaseService

package com.ahmadnaser.gbeapiswpblogdemo.Services

import android.app.Notification
import android.app.Service
import android.content.Intent
import android.os.IBinder
import android.util.Log
import com.google.firebase.messaging.FirebaseMessagingService
import com.google.firebase.messaging.RemoteMessage
import android.content.Context.NOTIFICATION_SERVICE
import android.app.NotificationManager
import android.graphics.BitmapFactory
import com.ahmadnaser.gbeapiswpblogdemo.R.mipmap.ic_launcher
import android.app.PendingIntent
import android.content.Context
import com.ahmadnaser.gbeapiswpblogdemo.MainActivity
import android.media.RingtoneManager
import android.support.v4.app.NotificationCompat
import android.support.v4.app.TaskStackBuilder
import android.text.Html
import com.ahmadnaser.gbeapiswpblogdemo.Activities.PostDetailsActivity
import com.ahmadnaser.gbeapiswpblogdemo.Fragments.HomeViewModel
import com.ahmadnaser.gbeapiswpblogdemo.R


class GreenFirebaseService : FirebaseMessagingService() {

    val TAG = "GreenFirebaseService"


    override fun onMessageReceived(remoteMessage: RemoteMessage?) {
        // [START_EXCLUDE]
        // There are two types of messages data messages and notification messages. Data messages are handled
        // here in onMessageReceived whether the app is in the foreground or background. Data messages are the type
        // traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app
        // is in the foreground. When the app is in the background an automatically generated notification is displayed.
        // When the user taps on the notification they are returned to the app. Messages containing both notification
        // and data payloads are treated as notification messages. The Firebase console always sends notification
        // messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options
        // [END_EXCLUDE]

        // TODO(developer): Handle FCM messages here.
        // Not getting messages here? See why this may be: https://goo.gl/39bRNJ
        Log.d(TAG, "From: " + remoteMessage!!.from!!)

        // Check if message contains a data payload.
        if (remoteMessage.data.size > 0) {
            Log.d(TAG, "Message data payload: " + remoteMessage.data)
        }

        //remoteMessage.getData().containsKey("post_id");

        // Check if message contains a notification payload.
        if (remoteMessage.notification != null) {
            Log.d(TAG, "Message Notification Body: " + remoteMessage.notification!!.body!!)
            sendNotification(remoteMessage.notification!!.title, remoteMessage.notification!!.body, remoteMessage.data)
        }

        if (remoteMessage.notification == null && remoteMessage.data.size > 0) {
            sendDataNotification(remoteMessage.data)
        }

        // Also if you intend on generating your own notifications as a result of a received FCM
        // message, here is where that should be initiated. See sendNotification method below.
    }
    // [END receive_message]

    private fun sendNotification(title: String?, messageBody: String?, data: Map<String, String>) {

        var intent = Intent(this, MainActivity::class.java)
        if (data.size > 0 && data.containsKey("post_id")) {
            intent = Intent(this, PostDetailsActivity::class.java)
            intent.putExtra(HomeViewModel.POST_ID, data["post_id"])
            intent.putExtra(HomeViewModel.POST_NAME, data["post_title"])
            intent.putExtra(HomeViewModel.POST_AUTHOR,data["post_date"])
            intent.putExtra(HomeViewModel.POST_IMAGE,data["post_image"])



        }
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
        val pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,
                PendingIntent.FLAG_ONE_SHOT)

        val defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)
        val notificationBuilder = NotificationCompat.Builder(this)
                .setSmallIcon(R.drawable.ic_home_black_48dp)
                .setContentTitle(title)
                .setContentText(messageBody)
                .setAutoCancel(true)
                .setSound(defaultSoundUri)
                .setContentIntent(pendingIntent)

        val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

        //notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
    }


    private fun sendDataNotification(data: Map<String, String>) {
        val stackBuilder = TaskStackBuilder.create(this)

        val num = System.currentTimeMillis().toInt()

        if (data.size > 0) {
            var intent = Intent(this, MainActivity::class.java)
            if (data.containsKey("post_id")) {
                intent = Intent(this, PostDetailsActivity::class.java)
                intent.putExtra(HomeViewModel.POST_ID, data["post_id"])
                intent.putExtra(HomeViewModel.POST_NAME, data["post_title"])
                intent.putExtra(HomeViewModel.POST_AUTHOR,data["post_date"])
                intent.putExtra(HomeViewModel.POST_IMAGE,data["post_image"])
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK)
                stackBuilder.addParentStack(MainActivity::class.java)
            } else {
                //if there is splash screen load it
                intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
                stackBuilder.addParentStack(MainActivity::class.java)
            }
            stackBuilder.addNextIntentWithParentStack(intent)


            //PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
            val pendingIntent = stackBuilder.getPendingIntent(num, PendingIntent.FLAG_ONE_SHOT)

            val title =  Html.fromHtml(data["title"]).toString()
            val messageBody =  Html.fromHtml(data["message"]).toString()

            //Notification Builder
            val mBuilder = NotificationCompat.Builder(
                    applicationContext).setAutoCancel(true)
                    .setDefaults(Notification.DEFAULT_ALL)
                    .setContentTitle(title)
                    .setSmallIcon(R.drawable.ic_home_black_48dp)
                    .setLargeIcon(BitmapFactory.decodeResource(applicationContext.resources, R.drawable.ic_list_black_48dp))
                    .setContentText(messageBody)

            val bigText = NotificationCompat.BigTextStyle()
            bigText.bigText(messageBody)
            bigText.setBigContentTitle(title)
            bigText.setSummaryText(title)

            mBuilder.setStyle(bigText)
            mBuilder.setPriority(NotificationCompat.PRIORITY_MAX)

            mBuilder.setContentIntent(pendingIntent)

            val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

            notificationManager.notify(num /* ID of notification */, mBuilder.build())
        }
    }
}

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package com.ahmadnaser.gbeapiswpblogdemo.Services

import android.app.Notification

import android.app.Service

import android.content.Intent

import android.os.IBinder

import android.util.Log

import com.google.firebase.messaging.FirebaseMessagingService

import com.google.firebase.messaging.RemoteMessage

import android.content.Context.NOTIFICATION_SERVICE

import android.app.NotificationManager

import android.graphics.BitmapFactory

import com.ahmadnaser.gbeapiswpblogdemo.R.mipmap.ic_launcher

import android.app.PendingIntent

import android.content.Context

import com.ahmadnaser.gbeapiswpblogdemo.MainActivity

import android.media.RingtoneManager

import android.support.v4.app.NotificationCompat

import android.support.v4.app.TaskStackBuilder

import android.text.Html

import com.ahmadnaser.gbeapiswpblogdemo.Activities.PostDetailsActivity

import com.ahmadnaser.gbeapiswpblogdemo.Fragments.HomeViewModel

import com.ahmadnaser.gbeapiswpblogdemo.R

class GreenFirebaseService : FirebaseMessagingService() {

val TAG = "GreenFirebaseService"

override fun onMessageReceived(remoteMessage: RemoteMessage?) {

// [START_EXCLUDE]

// There are two types of messages data messages and notification messages. Data messages are handled

// here in onMessageReceived whether the app is in the foreground or background. Data messages are the type

// traditionally used with GCM. Notification messages are only received here in onMessageReceived when the app

// is in the foreground. When the app is in the background an automatically generated notification is displayed.

// When the user taps on the notification they are returned to the app. Messages containing both notification

// and data payloads are treated as notification messages. The Firebase console always sends notification

// messages. For more see: https://firebase.google.com/docs/cloud-messaging/concept-options

// [END_EXCLUDE]

// TODO(developer): Handle FCM messages here.

// Not getting messages here? See why this may be: https://goo.gl/39bRNJ

Log.d(TAG, "From: " + remoteMessage!!.from!!)

// Check if message contains a data payload.

if (remoteMessage.data.size > 0) {

Log.d(TAG, "Message data payload: " + remoteMessage.data)

}

//remoteMessage.getData().containsKey("post_id");

// Check if message contains a notification payload.

if (remoteMessage.notification != null) {

Log.d(TAG, "Message Notification Body: " + remoteMessage.notification!!.body!!)

sendNotification(remoteMessage.notification!!.title, remoteMessage.notification!!.body, remoteMessage.data)

}

if (remoteMessage.notification == null && remoteMessage.data.size > 0) {

sendDataNotification(remoteMessage.data)

}

// Also if you intend on generating your own notifications as a result of a received FCM

// message, here is where that should be initiated. See sendNotification method below.

}

// [END receive_message]

private fun sendNotification(title: String?, messageBody: String?, data: Map<String, String>) {

var intent = Intent(this, MainActivity::class.java)

if (data.size > 0 && data.containsKey("post_id")) {

intent = Intent(this, PostDetailsActivity::class.java)

intent.putExtra(HomeViewModel.POST_ID, data["post_id"])

intent.putExtra(HomeViewModel.POST_NAME, data["post_title"])

intent.putExtra(HomeViewModel.POST_AUTHOR,data["post_date"])

intent.putExtra(HomeViewModel.POST_IMAGE,data["post_image"])

}

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)

val pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent,

PendingIntent.FLAG_ONE_SHOT)

val defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION)

val notificationBuilder = NotificationCompat.Builder(this)

.setSmallIcon(R.drawable.ic_home_black_48dp)

.setContentTitle(title)

.setContentText(messageBody)

.setAutoCancel(true)

.setSound(defaultSoundUri)

.setContentIntent(pendingIntent)

val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

//notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());

}

private fun sendDataNotification(data: Map<String, String>) {

val stackBuilder = TaskStackBuilder.create(this)

val num = System.currentTimeMillis().toInt()

if (data.size > 0) {

var intent = Intent(this, MainActivity::class.java)

if (data.containsKey("post_id")) {

intent = Intent(this, PostDetailsActivity::class.java)

intent.putExtra(HomeViewModel.POST_ID, data["post_id"])

intent.putExtra(HomeViewModel.POST_NAME, data["post_title"])

intent.putExtra(HomeViewModel.POST_AUTHOR,data["post_date"])

intent.putExtra(HomeViewModel.POST_IMAGE,data["post_image"])

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_NEW_TASK)

stackBuilder.addParentStack(MainActivity::class.java)

} else {

//if there is splash screen load it

intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)

stackBuilder.addParentStack(MainActivity::class.java)

}

stackBuilder.addNextIntentWithParentStack(intent)

//PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);

val pendingIntent = stackBuilder.getPendingIntent(num, PendingIntent.FLAG_ONE_SHOT)

val title = Html.fromHtml(data["title"]).toString()

val messageBody = Html.fromHtml(data["message"]).toString()

//Notification Builder

val mBuilder = NotificationCompat.Builder(

applicationContext).setAutoCancel(true)

.setDefaults(Notification.DEFAULT_ALL)

.setContentTitle(title)

.setSmallIcon(R.drawable.ic_home_black_48dp)

.setLargeIcon(BitmapFactory.decodeResource(applicationContext.resources, R.drawable.ic_list_black_48dp))

.setContentText(messageBody)

val bigText = NotificationCompat.BigTextStyle()

bigText.bigText(messageBody)

bigText.setBigContentTitle(title)

bigText.setSummaryText(title)

mBuilder.setStyle(bigText)

mBuilder.setPriority(NotificationCompat.PRIORITY_MAX)

mBuilder.setContentIntent(pendingIntent)

val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

notificationManager.notify(num /* ID of notification */, mBuilder.build())

}

About the Author

Hi! I'm Ahmad. I have a degree in Computer Science from Birzeit University and you might call me a bit of computer geek. I am the Founder of Greenbackend Turnkey Solutions a leading Cloud and Hosting Company in the Middle East, Also I am the Founder of Ahmad Naser Turnkey Solutions in Harvey, LA, USA. I'm comfortable with a large range of languages and techniques. After implementing enterprise applications using Salesforce and Siebel CRM for 3 years and with professional experience in building websites, cloud apps, iOS apps, Unity games, Android mobile apps and educational games for 8 years. I decided to share my technical knowledge with people all over the world to benefit from my experience and build their own careers specially because I am a real world example with over 20 successful apps on Google Play Store, Asset Store and Apple Store, So your success is mine and I want to help you reach your goals step by step exactly as I do. I'm passionate about teaching people about technologies, so from time to time I gave courses online and in learning centers and teach beginners and professionals on many technologies and development frameworks. One of my greatest goals in life is growing the next generation of software professionals and to keep teaching programming at every opportunity I get. I can't wait to help you experience the achievement and financial freedom that having a deep understanding of technology brings. So why not start learning to design & develop now by joining our epic Unity 3D professional 2d game development course? See you soon! Ahmad

FirebaseService, onMessageReceived, FirebaseInstanceIdService, onTokenRefresh, sendRegistrationToServer

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