Can someone please teach me how to make extensions

I really want to do this.

Do you know java ?

not really

IMHO your easiest route into making extensions is to use RUSH

but you will need to get to grips with coding in java and the android ecosystem.

what would be a command that would like show an alert

There is already a notifier component for showing alerts.

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i know that, i want to replicate it

Is there like a reference for appinventor extensions?

Look to the appinventor sources...

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rush is broken for me

You probably do not have javac set up correctly

read the RUSH topic.

im so dumb to not think of that :skull: i uninstalled it a little while back

Nope: still broken

got farther but still not working

pls help anyone

Run the following commands in your terminal and post the outputs here.

java -version
javac -version
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Microsoft Windows [Version 10.0.22621.3085]
(c) Microsoft Corporation. All rights reserved.

C:\Users\heiro>java -version
java version "21.0.2" 2024-01-16 LTS
Java(TM) SE Runtime Environment (build 21.0.2+13-LTS-58)
Java HotSpot(TM) 64-Bit Server VM (build 21.0.2+13-LTS-58, mixed mode, sharing)

C:\Users\heiro>javac -version
javac 21.0.2



@Gordon_Lu would using Niotron IDE be better?