Tutorials & Examples

The next versions of B4A (4.30) and B4J (2.80) will allow you to embed Java code inside your B4X code. B4i supports similar feature with Objective C.

The purpose of this feature is to make it...

 

EDIT: Use the PostString method as it can carry more data (5 MB is ok - it's a server parameter). Download2 uses the "get-method" which is limited. To retrieve the data in php use:

$json...

 

With the new Sip library you can make audio calls using Voip (Voice over IP) services.
Sip features were added in Android 2.3 (API level 9). Note that not all devices above Android 2.3 support Sip...

 

Note: You should use B4A 6.0 or above for this tutorial.

Android 5.0 (also called "Lollipop") introduced a new design for apps called "Material Design".

With this tutorial series I will...

 

This Tutorial will show you all needed Code to do Uploads to Dropbox.

Requirement for this tutorial: you need to have your App Dropbox-ready (see Tutorial I - Authentification).

Asuming...

 

The Sorter class uses quick sort algorithm to sort a list of objects.

There are exactly three assumptions about the list items:
1. All the items in the list are of the same type (or each item can...

 

Hi, I want to share an small course of SQL.
For me was so helpful.
Web:
https://www.sololearn.com/Course/SQL/

App:
https://play.google.com/store/apps/details?id=com.sololearn

This...

 

Step 1: On your mobile device, make sure you have USB Debugging activated.

Spoiler: How do I do it?

- Go to "Settings".
- Scroll down to the bottom and tap "About phone" or "About tablet",
- Scroll down to the...

 

This example uses the BLE2 library to continuously scan for BLE devices, looking for iBeacons.
It never connects to any device. It parses the advertising data and calculates...

 

The online example is currently disabled due to spam

Now that both B4A and B4J support WebSockets it is possible to implement a full push framework solution.
The solution is made of two...

 

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...

 

Update 2018:

New video tutorial:


The source code is available here...

 

This tutorial will show you how to create an app for a Wearable device and how to package it so it auto installs.

What is Android Wear?
For those that do not know, Google has released...

 

Android Beam is a feature introduced in Android 4 that allows one device to transfer a message to another device by placing the devices back to back. The communication is based on NFC.

The main...

 

How to make games​

A great idea, but a disappointing result

You woke up one morning with a great idea for a game. You rushed to your phone to convince your best friend to...

 

Edit: shared modules are still supported however more powerful options are available in newer versions of B4X: https://www.b4x.com/android/forum/threads/86587

B4A v3.80 adds support...

 

Here is my first tutorial for the community!

This tutorial will show you how to sign a B4A generated apk with a non-B4A keystore. I needed a way to do this for myself since I had some apps out...

 

The anchors feature is simple to use and is...

 

JSON format is a a format similar to XML but usually it is shorter and easier to parse.
Many web services now work with JSON. JSON official site: JSON

Using the new JSON library, you can...

 

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...