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	2619	January 16, 2024
[FREE] EIDE - Extension IDE create your extension on Android Extension Development	38	4532	October 7, 2025
Build Error: DX returned an error code Open Source Development	4	75	October 6, 2025
Rate my Appinventor UI Open Source Development bug-or-problem	1	78	October 6, 2025
Help for app inventor sources(Please reply) Open Source Development open-source	0	63	October 4, 2025
Log file for App Inventor build error Open Source Development	3	43	September 30, 2025
🏃‍♂️ Fast : An Efficient Way to Build & Publish Extensions Extension Development extension-developmen , fast-cli , extension-builder	480	15161	September 29, 2025
Help with ant build for appinventor-sources-old - Java returned: 137 and DX returned 1 errors Open Source Development bug-or-problem	3	125	September 23, 2025
Extension properties bug Open Source Development	6	97	September 14, 2025
Extension property "Screen" Extension Development faq	2	110	September 11, 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	3	154	September 8, 2025
Rush • A new and improved way of building extensions Extension Development extension-developmen , extension-builder	558	45957	September 7, 2025
A lot of warnings when compiling an extension Extension Development bug-or-problem	2	105	September 6, 2025
Looking for help in extension development Extension Development	6	224	September 1, 2025
The Mist Project: AI and Syntax Integration for App Inventor Open Source Development	22	1312	August 26, 2025
[F/OS] OneSignalPush Extension but not Succeed build till now (v1) Extension Development	8	353	August 26, 2025
Android 15+ : Status and Nav Bar Colours Extension Development	43	3523	August 24, 2025
AI2OfflineBuildTool : Build AI2 Projects Offline Open Source Development ai2offline , build-tool	2	225	August 23, 2025
Error when building the application Open Source Development	6	225	August 16, 2025
Getting blank page on local host Open Source Development localhost	16	318	August 15, 2025
Creating own extension Extension Development	4	6448	August 8, 2025
Error building aix using rush Extension Development aix-builder	1	161	July 25, 2025
Need help for recyclerview library Extension Development	52	1565	July 17, 2025
Getting "invoke: no method named StartAdMob in class java.lang.Boolean" in Custom AdMob Extension Extension Development monetization	6	210	July 21, 2025
Extension Document Generator - Generate Docs For Your Extension In A Single Click Extension Development extensions , extension , extension-docs	51	1845	July 12, 2025
Super Dev Mode pauses on “invisible” breakpoints & then shows blank screen Open Source Development	6	202	July 11, 2025
How do you use attach XML feature(@usesXML) in extensions? Extension Development	2	193	July 3, 2025
Need Help Making App Inventor UI Truly Responsive for Mobile Open Source Development gsoc	4	249	July 2, 2025
Add deep link support in app Extension Development	77	11218	June 27, 2025
AIX Extensions Catalog: The Open-Source Hub for App Inventor Extensions Extension Development	10	798	June 26, 2025