B4J Tutorials

[Server] Table report with Export feature

• By Erel
• Mar 23, 2014

Online example: http://basic4ppc.com:51042/reports/index.html

In this example we are using a JQuery open...

 

Attachments

• TableExample.zip

  5.7 KB · Views: 1,347

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[RPi] - PiFace Control And Display (CAD)

• By Erel
• Jan 21, 2016

jPi4J library supports the PiFace Digital extension. However it doesn't support the CAD module as the...

 

Attachments

• PiFace_CAD.zip

  1.7 KB · Views: 887

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Basic ListView Scrolling?

• By LWGShane
• Jan 20, 2016

Is there anyway to handle a ListView that has more items than can fit on-screen?

 

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[ABMaterial] One Page - Subs required

• By Harris
• Jan 12, 2016

Continuing the One Page, Many Uses example, here we demonstrate how to create and collect the events raised for each Type (Employee, Vehicle, User, etc).

The module form is getting rather large...

 

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[ABMaterial] Populate a combo based on another selection

• By Harris
• Jan 2, 2016

You may be thinking that I create these tutorials for myself. You may be right!!!
My RAM memory is very limited. Erel has offered (us) a place to securely store them (he is so kind) for future...

 

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Remote control Raspberry Pi with Tablet via Bluetooth.

• By Mark Read
• Jan 5, 2016

Based on various tutorials and posts, I have made this remote control for my RPi.
Hardware required: Tablet with 1200 x 800 resolution (can be reduced by changing the layout file) and Bluetooth...

 

Attachments

• Windsonic_server.zip

  1.9 KB · Views: 627
• winsonic_client.zip

  86 KB · Views: 643
• windsonic_client.png

  36.3 KB · Views: 700

Last edited: Jan 6, 2016

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[IoT] Raspberry 2 & B4J from the scratch...

• By KMatle
• Oct 28, 2015

This tutorial is about:

- Installing a brand new RaspBerry 2 (RB) (older models will do, too)
- configure WiFi on the RB
- get remote access to the RB from your PC via "Putty"
- share files...

 

Last edited: Nov 1, 2015

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B4J: Using RSA with OpenSSL & php

• By KMatle
• Oct 25, 2015

Here's an example B4J app which

- creates RSA Keys
- send the public key to a php script with a message
- the php will encrypt/decrypt/Send the server's keys
- concert/load the server's keys to...

 

Attachments

• RSAExampleB4J.zip

  3.2 KB · Views: 583

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Getting Started Examples

• By Erel
• Aug 23, 2015

This package includes several simple examples to help developers get start with B4J.

The following examples are included:

• Hello World - One line example that prints Hello World.
• Guess...

 

Last edited: Feb 7, 2017

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Internal Visual Designer

• By Erel
• Jul 28, 2015

Starting from B4J v3.50 the IDE includes a visual designer similar to B4A and B4i designer.
The output of the designer is a bjl file. This file can be loaded to other panes or containers with:

B4X:

...

 

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[ABMaterial] Number of Data Grid Rows to Display

• By Harris
• Dec 26, 2015

I work on a laptop (14" screen) as my primary screen.
I also have a 21 inch screen as my extended display (used for browser display mostly).

The Feedback example hard-coded the number of...

 

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[IoT] Traffic Light with Raspberry Pi

• By Erel
• Sep 2, 2015

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...

 

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Creating 1D and 2D Barcodes using inline Java Code and the ITEXT library

• By Johan Schoeman
• Nov 28, 2015

The attached project uses inline Java code and the ITEXT library to create various types of 1D and 2D barcodes. The barcodes are store in a PDF file(s). Change the code in the B4J class or add...

 

Attachments

• ITEXT_BARCODES.zip

  4.5 KB · Views: 1,131

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[example] B4X Time Tracker

• By Erel
• Jul 29, 2015

Time tracker example with a server component and iOS and Android client apps.
The client apps allow the employees to check in and out (based on the current status).
...

 

Attachments

• TimeTracker-B4A.zip

  11.8 KB · Views: 855
• TimeTracker-B4i.zip

  9.2 KB · Views: 726
• TimeTracker-B4J.zip

  7.1 KB · Views: 928

Last edited: Jul 29, 2015

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[Server] Online Json Tree Example

• By Erel
• Mar 20, 2014

This example is a port of the following desktop example: http://www.b4x.com/android/forum/threads/jsontree-tool-to-help-with-json-parsing-b4a-b4j.35963/...

 

Attachments

• ServerJsonTree.zip

  7.7 KB · Views: 1,862

Last edited: Jul 6, 2023

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The Official Raspberry Pi Projects book

• By b4auser1
• Dec 3, 2015

Free download here

 

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[IoT]Control a LCD display with you RaspBerry

• By KMatle
• Nov 12, 2015

For this tutorial you will need the Pi4J library. Get it here (under Erel's video): https://www.b4x.com/android/forum/threads/iot-jpi4j-raspberry-pi-gpio-controller.37493/#content

I did...

 

Last edited: Nov 12, 2015

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Raspberry Pi 2 - Server Performance

• By Erel
• Sep 1, 2015

I ran some tests to check whether the Raspberry Pi 2 can be suitable for server solutions.

The tests were similar to the tests previously done on a PC...

 

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[Server] Send and receive objects

• By Erel
• Jan 28, 2014

This is an old example. Better use B4XSerializator to serialize objects.

One of the nice things about using B4J server as the backend of B4A applications is that you can send and receive...

 

Last edited: Mar 30, 2018

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Companion thread to B4J Training Video 5 - Bridge Scripts

• By Mark Turney
• Nov 3, 2015

As promised in this the B4J Training Video about the Bridge, I am attaching the scripts for running the Bridge from Mac or Raspberry Pi (Linux):

Mac:
1) Create a file called bridge.sh
2) Insert...

 

Last edited: Nov 3, 2015

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