I need help to send notifications using extensions

[maxi_caray]

thanks everyone i have located the problem using adb logcat ..and it was screen1
it says No value for Screen1:

02-11 01:47:42.925 5043 5043 E AndroidRuntime: Caused by: java.lang.RuntimeException: org.json.JSONException: No value for Screen1%0A02-11 01:47:42.925 5043 5043 E AndroidRuntime: at xyz.kumaraswamy.itoo.ItooService.onStartCommand(ItooService.java:115)%0A02-11 01:47:42.925 5043 5043 E AndroidRuntime: at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:3797).

so i had to move relevant blocks to Screen1 and and now it is 1 process and 1 service in the running services, worked fine ..just i couldn’t get the notification because of this :

it is different in kodular to app inventor, and one more thing:

it looks like something wrong can i hide it somehow and keep it running in the background, not stopping it using button or else it well stop until the app open again.

blocks :

thanks again guys learned something new today adb logcat to locate and find out whats’s going on.

[Taifun]

@maxi_caray

it looks like something wrong can i hide it

No
It is a persistent notification
But you can dismiss it on newer Android versions
Btw SavePricessForBoot will nut work anymore for sdk 35…

Taifun

[maxi_caray]

got it thanks a lot

now this is importent:

@maxi_caray

i couldn’t get the notification because of this :

it is different in kodular to app inventor

[RaYzZz (Gianluca Franco)]

It looks correct, make sure there are no extra spaces where they shouldn’t be.

(I’m not really sure whether it’s there or not)

[maxi_caray]

there are no extra spaces, when you zoom in blocks it appears like in the picture, i have tried the first method too, EXAMPLE 7 using the the script again and still didn’t received notifications even that process is running,

@maxi_caray

Screenshot 2026-02-11 3.55.24 AM359×135 6.13 KB

i well stop here for now until i find a way through this, should i mark a Solution

thank you guys for your time

[Taifun]

@maxi_caray

still didn’t received notifications even that process is running,

Anything useful in logcat?
How do you trigger the DataChanged event?
You only can get a notification if there is a change

Taifun

[maxi_caray]

@Taifun

Anything useful in logcat?

i don’t know how do logcat can help here, but i well give a try..

@Taifun

How do you trigger the DataChanged event?

@Taifun

You only can get a notification if there is a change

i changed it many times manually and even from my app by spinner selection, but i don’t receive it
i followed every step as in the video i saw and it worked in the video but not with me, but in the video and the examples blocks they are using app inventor not kodular, is there a different between them? like Firebase_Database1.Data Changed: kodular block event and FirebaseDB1.DataChanged: app inventor block event

[Taifun]

@maxi_caray

saw and it worked in the video but not with me, but in the video

Try a test project in App Inventor then to find out if there is a difference
Can you post a link to that video?
Taifun

[maxi_caray]

@Taifun

Try a test project in App Inventor then to find out if there is a difference

i well

@Taifun

Can you post a link to that video?

Background Tasks in mit app inventor ,kodular (Part 2) - Firebase Notifications.

[Taifun]

Ask the author @_ahmed aka Mr. Koder for help

@_Ahmed

Taifun

[maxi_caray]

@Taifun

Try a test project in App Inventor then to find out if there is a difference

using app inventor,i get a runtime error, because FirebaseDB is experimental component :

some people reported that error in MIT APP Inventor community,

Runtime Error Error from Companion, FirebaseBD

even worse

[Joe90]

You do not actually need to load the firebase component to use itoo in the background with firebase.

In the example instructions, it is only used to allow message value changes for testing purposes (this could also be done using a web component)

If nothing else works, you may wish to consider using the timer approach instead of the dataChanged approach. (Or drop firebase altogether and use another online data storage offering)

[Taifun]

@maxi_caray

using app inventor,i get a runtime error, because FirebaseDB is experimental component

Which runtime wrror do you get?
You can ignore the warning

Taifun

[maxi_caray]

@Joe90

you may wish to consider using the timer approach instead of the dataChanged approach. (Or drop firebase altogether and use another online data storage offering)

thanks, i well consider it

[maxi_caray]

@Taifun

Which runtime wrror do you get?

@Taifun

You can ignore the warning

when i ignore the warning and builds the app after installing,when it opens,i get a blank freezed screen nothing on it even the itoo process not running

[Taifun]

as you are now using App Inventor for the test project, ask in the App Inventor community in the corresponding thread
protip: follow the tutorial carefully to avoid errors

Taifun