Hi all,
I am developing an app that needs to constantly monitor a specific node of a Firebase Realtime database and send notifications when the value changes, even when the app is closed.
I want to monitor the /DEVICES/STATUS node so
I need to send a notification when the value becomes "DEVICES_OFF".
This monitoring should continue even when the app is in the background or completely closed. I am using the iToo extension and MelonNotification. Is it possible to do this? In the iToo examples I found only one method that sends data to a node in the background, while in my case I need to read this data and receive the notification even when the app is not running. I trust in your help!
Thanks in advance!
Start here:
Thanks, I followed the first example "Firebase using own project and the dataChanged event" it works, but obviously if I close the app from the multitasking menu, I no longer receive notifications if the "message" node changes. I also gave all permissions to the app from the settings. Only when I reopen the app I receive the notification.
I use a Xiaomi with Android 13
The whole point is that it works when the app is closed...
You are using the MelonNotificationStyle extension ?
You are testing with a compiled app ?
You get the initial notification (the service) then the update notifications (when the data is changed) ?
I first used MelonNotification on the app I'm developing, and since I have this problem that I reported to you, that is, that with the app closed I don't receive notifications, I thought of using the FBDataChanged_blank_2.aia file from the example, therefore using your application that uses NotificationStyle.
The value of the "message" node is changed by an ESP8266 that sends two different strings. Once SIRENA_ON and once SIRENA_OFF. It works if I have the app open and if I don't close it.
But as said when I close the app, I don't receive any notification if the "message" node changes from SIRENA_ON to SIRENA_OFF and vice versa.
Was that a yes or a no ?
Yes, if you mean this one:
I also replaced the NotificationStyle extension with MelonNotification in the FBDataChanged_blank_2.aia project and the problem persists.
It would really help if you provided a screenshot of your relevant blocks, so we can see what you are trying to do, and where the problem may be.
To get an image of your blocks, right click in the Blocks Editor and select "Download Blocks as Image". You might want to use an image editor to crop etc. if required. Then post it here in the community.
Taifun
Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by 
Taifun.
As far as I can see the blocks look correct
My suggestion is to use logcat to probably find out what's going on
Taifun
You could also test your example using the default icon - :ic_dialog_alert, in case your icon image/path is causing an issue
I changed the icon to :ic_dialog_alert but the problem persists. I also tried on other smartphones Samsung A21 and another Xiaomi, with the same Android version, even on these smartphones when I close the app and the "message" node changes, nothing happens until I open the app if it is the app I am developing. While for the example project FBDataChanged_blank_2.aia, if I reopen the app nothing happens, only when I press the START FB Data Process button I receive the notification. So the notification is "enabled" only when the conditions when Screen1.Initialize occur for my app, while for the example app only when Button2.click - when I close the app as already explained nothing happens when the string of the "message" node changes.
Thanks @Taifun now I am on a Mac computer, I read from your topic that SDK Platform-Tools is downloadable for Windows. I will do it as soon as possible.
I have just installed my test version of fbDataChanged with MelonNotification. (The blocks look the same as yours)
This is working as expected, and my device is receiving notifications when I change the message through the firebase console, having closed the app and removed it from recent items, and with the phone "off" / "locked".
I will leave it for a while, just to ensure that the app is really closed.
Please, con you share this modified file AIA with MelonNotification?
I figured out two things. If I close the app by swiping left, the app gets notifications even if it's not in the app list in the multitasking menu. And it works!
While if I close the app by pressing the "X" as in the photo below, I no longer receive notifications. I'm used to closing all the apps in the multitasking menu this way. 
But I have another problem. When I receive notifications, I receive two notifications. 1. Firebase: message and 2. FB Message why? 
Follow photo below.
2 is the service message
1 is the notification
The notifications should still work even if the app is closed.
Mine is still running now after two hours of closing the app.
Can't you hide the service message?
Also, as mentioned, if I close the app from the multitasking menu by swiping left or right, the notifications work and the service message remains. While if I close all the apps from the multitasking menu with the "X", the notifications no longer work and the service message does not remain and closes. Yet when I close the app by swiping left or right, the app closes, in fact when I reopen it goes into "loading" as if it were starting from scratch.
For me, it shows when the process first starts, then goes away, not to be seen again. This might be an Android 15 thing.
What device do you have your app installed on ?
Xiaomi Redmi Note 12 Pro
Android 13 TKQ1.221114.001 (Xiaomi HyperOS)