B4J Tutorials

JordiCP · Mar 21, 2021

From time to time, jOpenCV examples will be referenced in this tutorial. You can find the donwload link in the first post of the jOpenCV library thread
Syntax: when referencing...

JordiCP · Mar 21, 2021

From time to time, jOpenCV examples will be referenced in this tutorial. You can find the donwload link in the first post of the jOpenCV library thread
Syntax: when referencing...

rtek1000 · Mar 19, 2021

Attached project code:

B4X:

#Region Project Attributes
    #MainFormWidth: 600
    #MainFormHeight: 600
#End Region

Sub Process_Globals
    Private fx As JFX
    Private MainForm As Form...

Peter Simpson · Feb 26, 2021

Hello to you all,
I decided to recreate this simple but effective game example, the game is based on the B4XPages library. The game is designed for hand, eye and memory coordination, so I called...

Peter Simpson · Mar 4, 2021

Hello to you all,
Here is an extremely simple example on how to easily recreate Google Trends results using B4XPages with B4j and the xChart library. In this example I used Google...

Mashiane · Jun 12, 2018

Ola

So me runs into this nice charting library, morris chart. Me see a nice donut. Me likes donut.

Their examples are quite nice and straight forward and easy to implement...

Erel · Nov 8, 2020

OkHttpUtils2 methods are designed to be called on the main thread. This is the case in all platforms and configurations, except of B4J server solutions.

Starting from jOkHttpUtils2 v2.95 it is...

tchart · Jun 18, 2015

I thought I would share how I requested and installed a SSL certificate for my B4J server.

In my case I used namecheap.com to purchase a $9 SSL certificate. I already had a domain name and a...

Peter Simpson · Feb 17, 2021

Hello to you all,
Here is a simple example on retrieving data from a REST API requested using the JSON Generator (you could also use http URL download), the same JSON library is also used to parse...

Peter Simpson · Feb 8, 2021

Hello All
Here we have an simple example on how you use your desktop OS (in this example Windows) and public internet IP address in conjunction with OpenWeather API, this is just a simple example...

Cableguy · Feb 8, 2021

Hi Alain,

When "creating" custom libraries in B4X one can introduce a few properties, like Author, Version etc....
I tried using those properties, but it has no effect in the lib, I'm guessing...

Cableguy · Feb 7, 2021

So...

I wanted to test the new feature of creating BaNano libs to use with ABMaterial...
I basically copied the hover example as it was what I needed for time being, and followed the...

Erel · Dec 1, 2015

Don't use this builder. It is no longer maintained.

Mono is a Mac / Linux port of .Net Framework: http://www.mono-project.com/

Using Mono it is possible use B4JBuilder, the command...

Mashiane · Dec 29, 2020

Ola

For the past 3 days, I've been trying to make this work. Eish. This is the implementation so far. We are not there yet.

1. You need a service worker file. We will create this after...

Mashiane · Feb 4, 2021

Ola

This post here bears reference, https://www.b4x.com/android/forum/threads/banano-resumeable-sub-sort-of.100500/#content

I am wondering...

1. Can one define a ???Wait method that can...

walt61 · Dec 21, 2020

Hi gang,

Here's how I got the Sonoff S20 to work with B4X. As the standard firmware doesn't come with an API and I wasn't successful trying to translate pySONOFF to B4X, I went down...

Mashiane · Jan 9, 2021

Ola

My first steps towards IoT.

1. Download Eclipse Mosquitto
2. There are a lot of examples in the forum about coding this, however I needed a GUI tool to first experiment with this. A...

alwaysbusy · Dec 10, 2018

Here is an example on how to connect with a Jetty B4J server. The example shows how you could use the B4J server to login/logoff and run a basic REST API call.

The project zip file is in post #3...

Cableguy · Jan 6, 2021

Hi guys...

Well, this goes straight to @alwaysbusy ...

Is it possible to still have a left aligned container in the Navigationbar WITHOUT havins any sidebar items?
If YES, please explain...

Harris · Nov 22, 2020

Responsive ABMaterial Design - Making this a Reality!

ABM is great for easily making world class web apps - particularly for the desktop (big screens).
That being said, we...

B4J Tutorials

Show only:

jOpenCV Tutorial 2 - Image & Video (with VideoCapture) acquisition, and conversions to/from Mat objects.

jOpenCV Tutorial 1 - Syntax rules, Helper methods and Basic types

USB Serial Port + AsyncStreams + B4XBytesBuilder

Attachments

✅ [B4X] [XUI] [B4XPages] B4J 'Erel Says' hand, eye memory game - Newer developers

? [B4X] [XUI] [B4XPages] B4J recreating Google Trends results with xCharts - Newer developers

[ABMaterial]: Me like Donuts

[server] jOkHttpUtils2 - server version

B4J Server: Requesting and Installing SSL Certificate

✅ [B4X] [XUI] [B4XPages] Simple B4J stock ticker app code using JSON REST API - Newer developers

? [B4X] [XUI] [B4XPages] Using B4J public internet IP address to create a BASIC weather app - Newer developers

[SOLVED][ABMaterial/BANano] BANano Libraries for ABMaterial - How to change Library Properties?

[SOLVED][ABMaterial/BANano] BANano Libraries for ABMaterial - ID not found

MonoBuilder - Compile B4J programs on Linux or Mac

[BANano] Beginning Firebase Messaging

[BANano] [SOLVED] What is the right way to use BANano.WaitFor?

Controlling Sonoff S20 smart power plugs [B4X] [Home Automation]

Attachments

[MQTT - Message Queuing Telemetry Transport] A For Dummies Experience on MS Windows

[BANano] Authentication to a B4J server (REST API)

[ABMaterial] Since Feedback is still down... I have a "wish"/question to make....

[ABMaterial] Making Responsive Apps - please contribute your expertise!

B4J Tutorials

Attachments

Attachments

Privacy & Transparency

Privacy & Transparency