B4J Tutorials

Hi Fam

As it is, I'm working on SithasoDaisy5, the next iteration of SithasoDaisy. I have been wondering if there was a way to load SVG files and then update their properties, like...

 

Hi Fam

I recently ran into TrendChart Elements, looking very impressive.

Here is as simple implementation. You can explore the demos they have for how to create other...

 

Hi Fam

Well, here it is..

Why?

I need a way to receive MQTT push notifications on my webapp. I didnt want to use Firebase but MQTT. The problem is the B4x Broker does not support...

 

Hi Fam

V7 of BANano came with background workers. I tested this and I was happy recently to actually use them in a solution...

 

Hello everyone,

a proverb says 'when the going gets tough, the tough get going'.

On this direction, up to now I have posted simple demonstrations of what you can do with the WebGL library.
If...

 

Hi Fam

Ensure you create credentials to login to your HiveMQ account.

You get your TSL WebSocket URL which is like..

104bbaaaa07a4293456e659cf91023.s1.eu.hivemq.cloud:8884/mqtt

...

 

Hi all,

this is the second part of WebGL library physics engines demos.

Before compile it, you have to download the Resources1.zip file, rename it to Resources.zip
and put it in the...

 

Hi Fam

The EasyMDE allows one to have a MarkDown Editor within their app. This is based on this GitHub.

One is able to create Markdown documents and save and retrieve them. The nice thing...

 

Hi Fam

I wanted to sign PDF documents in my product. So.. I used the PDF-LIB for this.

1. I designed a screen to enter the signature and initials.

2. The canvas we use...

 

Hi there, it's a pleasure to get this working...

My jFreeTTS is a library that I've just managed to cook for text to speech using the FreeTTS library.

1. Download the FreeTTS...

 

Hi Fam

This has been one of those components that I postponed to do. The creator of MathJS, a javascript library that I have been using for a while, also created a JSON Editor. I decided to...

 

Hi Fam

With SithasoDaisy5, you have the capability to view JSON files as dynamic trees. This is wrapping this Github project.

The code is as simple as feeding the component...

 

Hi Fam

With SithasoDaisy5, you will be able to create Organograms / Family Trees. Drop a SDUI5TreeSpider on your form and whala!

This is wrapped from this GitHub Project

...

 

Hi Fam

Before you start this tutorial, please ensure that your dev environment is setup by following this tutorial...

 

pyvips is a very powerful image manipulation library. It can manipulate very large images. I've created a modified "HugeImageView" based on it as an example. It can show 1-2 GB images...

 

First post, first issue:
I'm in the process of developing an ABM application. For testing purposes, I uploaded the application on my test server. The application may start fine, but when loading...

 

PyBridge is a framework that allows accessing Python libraries from within B4J.

It works by starting a Python process that connects to the B4J process. The Python process receives commands from...

 

Hi all,

here a simple shooter game using B4J WebGL libary and cannon.js physic engine.

Note that really I use cannon-es that is a port of cannon.js to use inside Javascript ES6 modules.

Note...

 

PyBridge must be accessed from a single thread. In server solutions, each handler runs in its own thread so we need to add some barriers to ensure proper usage.

The way to implement it is by...

 

This sophisticated project does one thing - the user clicks on a hardware button, connected to the RPi, and a notification appears on the PC.

The setup:
RPi running Mosquitto broker...