Android Question Need help to understanding with push notification and foreground/background process

[lsahidin]

I already create an app with mqtt, but now I just wonder how I can create push notification when I received data although the application is closed or not active. I have tried from this great example https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/ to make push notification, but not understand how to integrate with mqtt. I thougt is there checking process inside fm.initialize

Sub Service_Create
    fm.Initialize("fm")

and also with handleIntent, really I'm not skillful mobile developer.

Sub Service_Start (StartingIntent As Intent)
    If StartingIntent.IsInitialized Then fm.HandleIntent(StartingIntent)

for your help, thanks in advance!

 

[KZero]

you should have a MQTT Broker to manage the clients and messeges and to sent FCM notifications when needed
you can start from here

MqttBroker

jMqttBroker library is based on the moquette open source project: https://github.com/andsel/moquette It implements a MQTT broker. If you are not familiar with MQTT then start with this tutorial: https://www.b4x.com/android/forum/threads/59471/#content The broker is like a "black box". It is...

www.b4x.com

and

Firebase Service (Server) Example

Hey, this is an example/tutorial of a Server that manages Firebase Subscribtions, Unsubscribtions and SendMessages2Topics with the Power of B4J Server! The advantage is, requests are processed very quickly (barely waiting period), I do not have to start a script, save resources of the VPS or...

www.b4x.com

 

[Erel]

How is MQTT related to this? Your app doesn't need to run in order to receive push messages.

 

[lsahidin]

@KZero that's nice, thanks. After read tutorial I already decide to use firebase service send2topic.

@Erel MQTT library connect to io server broker, if there any data changes fcm will send push messages to another device.

but now why icon notification is only grey color, I cannot see my icon app on there. or manifest code for adaptive icon make a problem with icon notification?

 

[Erel]

but now why icon notification is only grey color, I cannot see my icon app on there. or manifest code for adaptive icon make a problem with icon notification?

You should start a new thread for a new question.