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...

 

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...

 

"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...

 

Turn an Old Android Phone into Your Own SMS Gateway​

(Firebase trigger + SENT / DELIVERED tracking – Minimal example)

For a long time I was using Firebase Phone Auth to validate access...

 

Well,

As JamesGreaves requested,
"So do you not think it would be of value to have even something like @walt61 has created but online?"...

 

Firebase Phone Authentication in B4A using WebView + WebServer (Step-by-Step Setup)​

This example shows how to implement Firebase Phone Authentication in B4A using a WebView + remote...

 

Hi,

This is In-App Review class :

1 - You need to install these libraries using SDK Manager :

com.google.android.play:review
com.google.android.gms:play-services-tasks...

 

[B4X] [XUI] AS FeatureRequest [Payware]

AS FeatureRequest is a lightweight, easy-to-integrate library that allows you to present a list of potential features to your users, enabling them to vote on the ones they find most valuable. By collecting and prioritizing user feedback, you can accelerate the development of the most desired...

www.b4x.com

In this example I show how easy you can display 2 pages, with the features that are under development and...

 

Google has deprecated the previous method of sending push notifications. It will stop working on June 2024.
If you have an already working solution then you only need to update the B4J side. Do...

 

After running some faulty code I ended up with a faulty entry in the SQLite SQLite_Master table.
This was a table name called NON_CLINICAL.db.JOURNEYS. This name is faulty and was causing
all...

 

You are probably aware that the play store has new requirements for new individual developers to publish an app.

Having been through the grinder to get my simple app published, I wanted to share...

 

I created a simple Node.js tool that searches the B4X forums directly from the command line. It's particularly useful when working with AI coding assistants like Claude Code, Codex CLI, Cursor, or...

 

GitHub - AnywhereSoftware/B4X_Forum_Resources: Source code and other resources from B4X programming forum

Source code and other resources from B4X programming forum - AnywhereSoftware/B4X_Forum_Resources

github.com

Experimental version.

Libraries, tutorials and code snippets were inserted into github. First post only. Includes data from...

 

DateUtils is a code module with a set of useful date and time related methods.
It complements DateTime api, it doesn't replace it.

The methods included in DateUtils:

'Calculates the period...

 

Many have gotten the information about their Apps not aligned with the 16KB. Here is how to check which specific libraries are causing the issue

Note: You have to check for each app individually...

 

If you are using this example:

Google Authorization with AuthorizationClient

Might encounter this error:

Clearing token cache
Error occurred on line: 0 (GoogleAuthorization)...

 

May 4, 2024 - Start of tutorial post...

Based on:

Open Street Map viewer - GPS

Hi, This b4Xlib contains a custom view (cvMap) which can display Open Street Map. The tiles are retrieved from the internet and cached in a database. You can add shapes and images on the map. UI : - Lat/lng Center of the map - Zoom Level - Compass Direction with rotation - Scale - Button...

www.b4x.com

The original project was based on the GPS object /...

 

This script checks for all the necessary markers to be sure your APK/AAB/SO files are 16KB page size compatible.
It has been simplified to easy usage.

What Does This Check?​

Starting with...

 

The user can set live wallpapers by long pressing on the home screen and choosing Wallpapers - Live Wallpapers.
Creating a live wallpaper is not too difficult.
A service is responsible for...

 

A demonstration of using a "Stick Header" (Floating Title)...

With Erel's help HERE, I was able to create my version of a "floating title", as Erel has coined it.

If you use ChatGPT...

 

As mobile developers, we all have the frustrating experience of taking our eyes off our smartphone and staring at the PC screen, and vice versa. Microsoft "Phone Link" is a useful Windows app that...

 

Using a USB Cable for debugging apps is faster and easier than using B4A bridge. But as you know, being always connected to the USB port will decrease the battery life. With this instruction, you...

 

Title items are added to the list.
A Panel is set above the list. The panel shows the current title when the top visible item...