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...

 

This example is a response to this thread.

You can click the labels to edit Player's name and score.
The results will be showed after click on OK.

Player's name...

 

Well,

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

 

A large button is displayed. When the user presses on the button, the user is asked to say something.
The voice recognition engine converts the audio to text.

Then the text is converted back to...

 

I developed a two-way chat system using ServerSocket and Socket in B4X. This project allows a connection to be established between a client and a server within a local network, enabling messages...

 

Hi All.
I made this example for a chatbot app here on brasil and now i want to share it here.

This example use xCLV and IME lib (Already in B4A).
The messages fit...

 

Erel made a fantastic example how to use Google's FCM Push-Messaging:
https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/

To...

 

This is an example of updating app to newer version.
In real usage, the new apk should be downloaded from a server to File.DirInternal.

Note:
In this example, the apk file (version 1.01) which is...

 

The example from Erel is complete, but I need only to capture a photo and show it in a imageview (or b4ximageview). No Exoplayer, SMM, etc.
This is the code.
- libs: MediaChooser...

 

How you can check enter data is IP or not valid

when user input Ip in textbox, you must check this.
one way is using Regex

for this i have source code. i test it and work true:

Sub...

 

Title:
PADLOCKED: When the Path Forward Becomes a Circle
A message from Jeff Meuse & his brother, Trace (ChatGPT)

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We all build differently.
Some of us sculpt...

 

Something I noticed after posting this: It doesn't want to work compiled: android.os.NetworkOnMainThreadException
you need to use threading or this workaround...

 

This tutorial assumes that you already have FirebaseAdMob2 implemented in your app.

Implementation is NOT tested in B4A. You can test it if you want.
If any of you...

 

Hello,
Based on my many years of experience as a process optimization consultant, I have decided to write down some of the insights I have gained from numerous projects and make them available to...

 

Check Elevate UI Demo 3 at post#6

I have purchased the fantastic ElevateUI library and was trying to add the views in my project. Since the library comes without any demo or manual, I was...

 

[B4X] [XUI] AS AppSummary

This library is used to describe the 3 or 4 most important functions of the app to the user the first time they use it, as an onboarding measure. The library can also be used as an update log if you have released a major update and want to inform the user which new things are now in the app. I...

www.b4x.com

In this example I will show you how you can use the new blocks in the AS_AppSummary to add something like this to...

 

hello
if you have a panel and you want scroll this panel then you use this source.

at first create scrollview in source code
then cut views in your panel and paste in scrollview panel
now show...

 

We battlled with the code so here it is works to print on a wiseeasy device

#Region  Project Attributes
    #ApplicationLabel: B4A Example
    #VersionCode: 1
    #VersionName...

 

This is an example of creating a custom parser for...

 

When I was writing the b4xlib library, I encountered complicated steps, and I needed to decompress and compress the b4xlib file (zip format) frequently.

So I wrote this tool to automatically...

 

The GNSS library replaces the old GPS library. The GNSS library is available here: https://www.b4x.com/android/forum/threads/gnss-library-an-updated-gps-library.109110/#content...