Open Source Development

Extension Development This category is for questions specifically about working with MIT App Inventor's open source repository as it pertains to extension development. Anyone interested in developing an extension should start by reviewing the following documents and ask questions here if you encounter issues. Also check the parent category #open-source-development for additional troubleshooting when it comes to building the master or ucr branches. Google Summer of Code Please post your inquiries and discussions about MIT App Inventor Google Summer of Code submissions here.

Topic	Replies	Views	Activity
About the Open Source Development category Open Source Development	5	2525	January 16, 2024
🏃‍♂️ Fast : An Efficient Way to Build & Publish Extensions Extension Development extension-developmen , fast-cli , extension-builder	408	9896	July 3, 2025
How do you use attach XML feature(@usesXML) in extensions? Extension Development	2	61	July 3, 2025
Need Help Making App Inventor UI Truly Responsive for Mobile Open Source Development gsoc	3	86	July 2, 2025
Add deep link support in app Extension Development	76	10214	June 27, 2025
After Commit 0048cfa, the locally compiled version is blank after logging in, and some js have 404 errors Open Source Development bug-or-problem	1	49	June 27, 2025
Need help for recyclerview library Extension Development	49	912	June 26, 2025
AIX Extensions Catalog: The Open-Source Hub for App Inventor Extensions Extension Development	10	314	June 26, 2025
A Problem about Cyber Security Attack Vendor for Extensions Extension Development extensions	1	84	June 25, 2025
Code too large after adding componants Open Source Development bug-or-problem	6	185	June 25, 2025
Error: Property AccelerometerSensor.LegacyMode has no category Open Source Development bug-or-problem	4	81	June 14, 2025
Accessing AppInventor on localhost Open Source Development	3	108	June 14, 2025
Windows testing of SDK 35 changes Open Source Development	0	121	June 13, 2025
Free AdMob ads extension source code for extension developers Extension Development monetization	5	4443	June 13, 2025
OneSignal Extension Fails in MIT App Inventor with NoClassDefFoundError — Works in Other Builders Extension Development help	15	126	June 12, 2025
Request for Feedback : Property Editor for creating ML models Google Summer of Code	1	116	June 7, 2025
Feedback Requested: Layout Mockups for App Inventor Mobile UI Open Source Development	5	285	June 1, 2025
How to set custom icon for extension Logo Extension Development iconname	73	4373	May 31, 2025
Something New: Making Extension Using Blocks Extension Development extension-developmen	32	2124	May 30, 2025
About Javascript Extension Development javascript	2	160	May 29, 2025
How do I add an Android permission in an extension? Extension Development help	2	212	May 26, 2025
Enderman8843/Click BUG Extension Development	1	131	May 25, 2025
The Mist Project: AI and Syntax Integration for App Inventor Open Source Development	12	733	May 24, 2025
Special Characters being encoded in filename? Extension Development	18	210	May 29, 2025
MediaUtil "private"? Extension Development	1	102	May 21, 2025
Get Support Fragment Manager Extension Development help	8	167	May 20, 2025
Contributing outside of GSoC Google Summer of Code	2	145	May 9, 2025
HOWTO: Add external library while making extension Extension Development	7	682	April 25, 2025
Asset path when using Companion vs. after building the app (Extension development) Extension Development	9	469	April 25, 2025
GSoC: MIT AI2 Companion App Google Summer of Code android	2	194	April 18, 2025