Tutorials & Examples

The B4X documentation booklets are available in PDF format, Download Link.
All files are included in the zip file in the link above, pdf booklets and all the source code.

You can also...

 

"Code smells" are common patterns that can indicate that there is a problem in the code. A problem doesn't mean that the code doesn't work, it might be that it will be difficult to maintain it or...

 

Many things have changed in B4X and also in the underlying platforms. I will try to list here all kinds of (old) features that have better alternatives.
B4X is backward compatible so these...

 

A new more powerful framework is now available: jRDC2.

This tutorial explains the basic concepts required for creating a connection between Android device and a remote server. In this...

 

There are several options to develop with B4A:
- Android emulator or a VM.
- Connect to a real device in USB debugging mode
- Connect to a real device with B4A-Bridge.

I recommend starting with...

 

v12.8 - December 6, 2023 - https://www.b4x.com/android/forum/threads/b4a-v12-8-is-available-for-download.157840/

• Code snippets...

 

If you are using B4A v5.80+ then please follow this tutorial: https://www.b4x.com/android/forum/threads/google-maps.63930/#post-404386

GoogleMaps library requires v2.50 or above...

 

jRDC version 2 is available here: https://www.b4x.com/android/forum/t...ation-of-rdc-remote-database-connector.61801/

Spoiler: Old and shouldn't be open

This tutorial covers a new framework named Remote...

 

A new more powerful framework is now available: Remote Database Connector.

This tutorial is a follow up to the previous tutorial that explained how to connect to a MySQL...

 

HttpUtils2 was replaced with OkHttpUtils2: https://www.b4x.com/android/forum/threads/okhttp-replaces-the-http-library.54723/
Both libraries are included in the IDE.


HttpUtils2 is a...

 

Better implementation based on B4XPages:

[B4XPages] Bluetooth Chat Example

Updated implementation, based on B4XPages of https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content. The code is much simpler compared to the previous example. Note that you can call Serial.Listen without making the device discoverable. This is useful...

www.b4x.com

Tutorial was rewritten in April 2018.
We will create...

 

Update 2018:

New video tutorial:


The source code is available here...

 

Please follow the installation (and configuration) instructions if you have not done it yet:
http://www.b4x.com/android/downloads.html

In this tutorial we will create a new AVD (Android...

 

Don't use ListView.
Use xCustomListView - it is more powerful, easier to work with and cross platform.

 

This example shows how to work with the GPS library.

The GPS object is declared in the Starter service. It is easier to put the GPS in a service and not in an Activity as the...

 

You can find the OSMDroid library thread here: http://www.b4x.com/forum/additional...tes/16309-osmdroid-mapview-b4a.html#post92643.

AIM: Create and initialize a...

 

The code in this tutorial should not be used for new projects.
New tutorial: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content

This...

 

This guide is obsolete ! It is no more updated.
Please use the B4X Booklets.

Here is a Beginner's Guide in pdf format.
The source code for the example programs is included.

All...

 

Latest version available here: https://www.b4x.com/android/forum/threads/b4x-dbutils-2.81280/

The DBUtils code module is designed to help you integrate SQLite databases in your...

 

Many applications require access to a persistent storage. The two most common storage types are files and databases.
We will cover text files in this tutorial.

The predefined Files object has...

 

These instructions are outdated. Please see the instructions here instead: https://www.b4x.com/b4a.html

 

This is an old tutorial. Most of the information here is no longer correct.



Basic4android v1.2 adds support for Service modules.
Service modules play an important role in...

 

New video tutorial:



Lets start simple:
Each B4A program runs in its own process.
A process has one main thread which is also named the UI thread which lives as long as the...