CODEWITHSUNDEEP
androidfirebasefirebase-cloud-messaging
King Dingeling
King Dingeling

Reputation: 197

Android - push notifications: purpose of FirebaseMessagingService class?

I've seen two tutorials about sending push messages from server with PHP to android devices through firebase cloud messaging and it works fine. But both tutorials have the FirebaseMessagingService class and I don't understand what's the purpose of it?? They don't explain a bit about it.

This is it:

class FirebaseMessagingService : com.google.firebase.messaging.FirebaseMessagingService() {

    override fun onMessageReceived(remoteMessage: RemoteMessage?) {
        showNotification(remoteMessage!!.data["message"]!!)
    }

    private fun showNotification(message: String) {

        val i = Intent(this, MainActivity::class.java)
        i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)

        val pendingIntent = PendingIntent.getActivity(this, 0, i, PendingIntent.FLAG_UPDATE_CURRENT)

        val builder = NotificationCompat.Builder(this)
                .setAutoCancel(true)
                .setContentTitle("FCM Test")
                .setContentText(message)
                .setSmallIcon(R.drawable.common_google_signin_btn_icon_dark)
                .setContentIntent(pendingIntent)

        val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager

        manager.notify(0, builder.build())
    }
}

Can I send push notifications from android with it? I just need to send push messages from PHP so can I delete it? The overview of my project is already messy and hard to follow and I don't want any useless stuff in there. Thanks in advance

Upvotes: 1

Views: 839

Answers (1)

Michael Lam
Michael Lam

Reputation: 445

This class is responsible for handling income message. The function onMessageReceived will be invoked when there is incoming data message no matter your app is in foreground or background. More specifically, this method is for you to customize the handling of key:value pair in data payload

You can leave it there if you are not going to do any special handling. Please read here for more information.

Upvotes: 1

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