B4J Tutorials

B4J on linux

hi,

After few adjustments B4J works fine on Ubuntu.
See picture;-)

If you want, I'll write a tutorial in french.
Looking for a translator .... If someone want it!

see you soon.
Capture du 2014-01-28 22_58_59.png
 

Charts Framework

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  • Charts.zip
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B4J Server: Requesting and Installing SSL Certificate

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...
 
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B4J documentation page

[IoT] - Raspberry Pi CCTV with MQTT

Simple solution that uses an embedded MQTT broker with a MQTT client to send the camera output to any connected client. The camera used is the standard RPi camera module.

The program starts...
 

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  • PiCCTV_B4A.zip
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  • PiCCTV_B4J.zip
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[Tool] MacStorePackager - publish your App to the Mac AppStore

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MonoBuilder - Compile B4J programs on Linux or Mac

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 It is no longer maintained.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...
 
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TreeTableView

TreeTableView is a new control added in B4J v5.80.

SS-2017-07-13_15.52.52.png


TreeTableView is very similar to TreeView where each item has...
 

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  • TreeTableViewExample.zip
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  • TreeTableView2ndExample.zip
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[server] Conscrypt and Http/2

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Pocketbase CRUD REST API & SSE with PostMan and then HttpUtils

Hi

CRUD Examples Attached

PocketBase
is an open source backend consisting of embedded database (SQLite) with realtime subscriptions, built-in users management, convenient dashboard UI and...
 

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  • PocketBase.zip
    6.9 KB · Views: 45
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[IoT] Traffic Light with Raspberry Pi

This is a simple example of a traffic light implementation using Raspberry Pi 2.

The red, yellow and green leds are connected to pins 27, 28 and 29 (see the numbering scheme...
 

[WebApp] (mini) Template Engine

WebUtils.ReplaceMap together with the CreateMap keyword are useful for building dynamic strings, especially for html output.

For example, in the chat example when a user writes a message we...
 

[server] Http/2 Configuration

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  • Http2.zip
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[B4X] [BitmapCreator] Creating a cross platform Tetris game

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  • B4A_Tetris.zip
    184.6 KB · Views: 1,021
  • B4i_Tetris.zip
    285.5 KB · Views: 737
  • B4J_Tetris.zip
    177.1 KB · Views: 942
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[Tool] WindowsStorePackager - publish your App to the Windows Store

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[IoT] Welcome to the Internet of Things

This example demonstrates how the B4X tools can be used to create a solution with multiple types of components and communication channels.

See the following video (make sure to watch it in HD...
 

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  • IoTExample.zip
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[Server] Screen capture server

This is a simple server that takes a screenshot of the current desktop screen and returns the image as the response.

For example if you call it from the device browser:

upload_2014-1-30_16-26-52.png


The handler...
 

Using external CSS file to style a ToggleButton

Tried
B4X:
aToggleButton.Style=":selected{-fx-background-color:black;}"
Not working for me. Any advice?
Furthermore, how can I relate the style of a node created by code with a css file?
 

[Server] Google Charts service

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  • google_charts.zip
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[WebApp] Example Team Manager using jQuery Mobile, WebSockets & SQLite

This OpenSource WebApp is based upon a request to manage team events from Android, iPhone, Windows and Linux (Raspberry) devices.
The solution is a B4J WebApp, using jQuery Mobile (jQM)...
 
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