🏃‍♂️ Fast : An Efficient Way to Build Extensions

Open Source Development Extension Development
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332

Types of return value and parameter have limitations in Fast?

I used to compile extension with Aixc and it can use any type as return value and parameters, and the extension working in AI2.

Can you remove this limitations in Fast?

333

I need more info to look into it.

I'm having trouble understanding what you mean. Could you please clarify?

334

I am trying to develop a pdf viewer extension using below library from many days and tried different ways but all were unsuccessful.

First it doesn't import the dependency due to conflict with android activity class that I resolved as per your recommendation by excluding it.

Second the build fails due to missing classes as I discussed above.

Not only this library but I faced similar issues in other libraries that uses androidx classes. I don't remember them exactly.

I am not expert in java development but this is my issue that I am facing and I am not sure if I have explained it correctly.

Your opinion will be appreciated.

335

What types do you mean, for example? You can return any type using the Object class.

336

:mega: An update is available v2.4.0

Date built: 25.02.25.06.19

  • Added support for attaching custom xml to bundle it with APK. (Will be working from nb201)
  • The Maven resolver has been updated to the latest version.

v2.3.1:

  • A few minor tweaks to optimize overall performance.

:heart_on_fire: A huge thanks to @Patryk_F for this awesome contribution.

3 Likes
337

Yes, I know I can use Object class, but the code like this

@SimpleFunction
	public Joint CreateMouseJoint(Body body, float x, float y) {
		assertWorld();
		MouseJointDef mjd = new MouseJointDef();
		mjd.bodyA = boxWorld.getWorld().getBodyList();
		mjd.bodyB = body;
		mjd.target.set(BoxUtil.pixelToVec2(x, y));
		MouseJoint mj = (MouseJoint) boxWorld.getWorld().createJoint(mjd);
		body.setAwake(true);
		return mj;
	}

you see the return type is Joint, input type is Body, both not from Yail type, but if I compile this file with aixc, it's working.

but with Fast, it fails.

338

This is because of FAST relays on AnnotationProcessors.jar to generate components info.

339

This will only work from the release of nb201.

2 Likes
340

:mega: An update is available v2.4.1

Date built: 26.02.25.22.58

  • Skips writing docs for deprecated events, methods & block properties.
  • Fixed some Maven Resolver related bugs.
  • Maven Resolver stores compressed JARs.
  • Added a .readme file.

:heartpulse: Thanks to @Kevinkun for spotting that docs gen bug.

3 Likes
341

Is there any plan to resolve library conflict issue as well?

342

I am still working toward a resolution for this issue.

2 Likes
343

:mega: An update is available v2.5.0

Date built: 04.03.25.14.53

  • AnnotationProcessors now also allows non-YailType parameters. (ref)
  • The Maven resolver has been updated to the latest version.

2.4.2:

  • Added multi-threaded downloading technique on fast upgrade.

:heartpulse: Thanks to @Kevinkun for identifying and helping to resolve this issue.

4 Likes
344

Hi @JEWEL One more issue

I recently created an extension and add Helpers methods. But helpers doc not generate.

345

Please tell me more! How was it written, and how should it have been?

346

Hi @JEWEL Check out pm

1 Like
347

:mega: An update is available v2.6.0

Date built: 08.03.25.15.34

  • Added blocks generator for AppInventor, Kodular, Niotron & AndroidBuilder by @Patryk_F
  • UTF-8 encoding issues have been resolved.
7 Likes
349

Hi everyone, I’m a beginner in Java and currently trying to use Fast to create an .aix extension for use in MIT App Inventor 2. However, I encountered an issue when trying to compile the project into an .apk.

Here are my .java, fast.yml, and assets/*.png files:
:paperclip: Fast_BluetoothHelper_v1_6.zip - Google Drive

Issue summary:

  1. When I import the .aix into AI2, the extension’s icon doesn't display. (Could the image file be too large?)
  2. The .aix can be imported into the AI2 website and runs fine via the MIT AI2 Companion simulator,
    but it fails to compile into an .apk – even when there’s no code block used in the project.

I noticed that if I use the default .java file provided by Fast instead of my own, the project can compile into an .apk without any problem.

:pray: I would really appreciate it if any experienced developer could take a look and help me figure out what’s wrong. Thanks a lot in advance!

If possible, please help me check whether there’s anything wrong with my .java or fast.yml settings.

350

Screenshot_2025-03-31-07-40-35-913_com.android.chrome
Screenshot_2025-03-31-07-40-35-913_com.android.chrome1080×2340 129 KB

Hey, your URL miss fast.yml, and assets/*.png

And can u share with us the error message!

2 Likes
351

Sorry, I forgot to include some files in the previous upload.
Here is the updated compressed folder with all necessary files (.java, fast.yml, and assets/*.png):
:paperclip: Fast_BluetoothHelper_v1_6.zip - Google Drive

352

U have a lot of problems.
Do u used ai to create this extension?

1 Like