Open Source Development

Google Summer of Code Please post your inquiries and discussions about MIT App Inventor Google Summer of Code submissions here. 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.

Topic	Replies	Views	Activity
About the Open Source Development category Open Source Development	5	2645	January 16, 2024
Should I use Niotron IDE or not? Extension Development faq	0	13	October 27, 2025
The Wait Is Over: All new AI2 Extension Studio Extension Development extensions , extension-developmen , extension-builder	5	215	October 25, 2025
🏃‍♂️ Fast : An Efficient Way to Build & Publish Extensions Extension Development extension-developmen , fast-cli , extension-builder	486	16131	October 22, 2025
The Mist Project: AI and Syntax Integration for App Inventor Open Source Development	23	1498	October 21, 2025
[FREE] EIDE - Extension IDE create your extension on Android Extension Development	38	4744	October 7, 2025
Build Error: DX returned an error code Open Source Development	4	113	October 6, 2025
Rate my Appinventor UI Open Source Development bug-or-problem	1	126	October 6, 2025
Help for app inventor sources(Please reply) Open Source Development open-source	0	92	October 4, 2025
Log file for App Inventor build error Open Source Development	3	64	September 30, 2025
Help with ant build for appinventor-sources-old - Java returned: 137 and DX returned 1 errors Open Source Development bug-or-problem	3	155	September 23, 2025
Extension properties bug Open Source Development	6	116	September 14, 2025
Extension property "Screen" Extension Development faq	2	136	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	185	September 8, 2025
Rush • A new and improved way of building extensions Extension Development extension-developmen , extension-builder	558	46885	September 7, 2025
A lot of warnings when compiling an extension Extension Development bug-or-problem	2	132	September 6, 2025
Looking for help in extension development Extension Development	6	263	September 1, 2025
[F/OS] OneSignalPush Extension but not Succeed build till now (v1) Extension Development	8	392	August 26, 2025
Android 15+ : Status and Nav Bar Colours Extension Development	43	4692	August 24, 2025
AI2OfflineBuildTool : Build AI2 Projects Offline Open Source Development ai2offline , build-tool	2	248	August 23, 2025
Error when building the application Open Source Development	6	287	August 16, 2025
Getting blank page on local host Open Source Development localhost	16	357	August 15, 2025
Creating own extension Extension Development	4	6521	August 8, 2025
Error building aix using rush Extension Development aix-builder	1	203	July 25, 2025
Need help for recyclerview library Extension Development	52	1652	July 17, 2025
Getting "invoke: no method named StartAdMob in class java.lang.Boolean" in Custom AdMob Extension Extension Development monetization	6	236	July 21, 2025
Extension Document Generator - Generate Docs For Your Extension In A Single Click Extension Development extensions , extension , extension-docs	51	1913	July 12, 2025
Super Dev Mode pauses on “invisible” breakpoints & then shows blank screen Open Source Development	6	259	July 11, 2025
How do you use attach XML feature(@usesXML) in extensions? Extension Development	2	221	July 3, 2025
Need Help Making App Inventor UI Truly Responsive for Mobile Open Source Development gsoc	4	297	July 2, 2025