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...

 

Every developer must understand this article if developing any kind of network communication app.

Android os recent versions put end apps users privacy at the heart of its platform, the network...

 

Well,

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

 

After having used the RSS Viewer library in the past, and now finding that it won't function with my secure sites, I decided to start with Erel's XUI CustomListView example and then...

 

Here is a nice tool that visualizes the JSON like a diagram. Pretty cool.

JSON Crack - Crack your data into pieces

Simple visualization tool for your JSON data. No forced structure, paste your JSON and view it instantly.

jsoncrack.com

 

Intel's Bridge technology will allow Android apps to run natively on Windows 11, now Microsoft released the beta version。

1. download windows11 from...

 

In this example project you can see how to add an auto play feautre to the AS ViewPager.

Sub Class_Globals
    Private tmr_AutoPlay As Timer
End Sub

Private Sub B4XPage_Created (Root1 As...

 

Hello All
Here we have an simple example on how you use your Android device GPS in conjunction with OpenWeather API, this is just a simple example and can obviously be changed and updated by...

 

After the release of the new grandiose DJI library and the preliminary work of freedom2000 and JordiCP in this thread...

 

NovaChat is a private chat class module (Multi-User in next version) that has almost all the functionality of instant messaging.

NovaChat uses the phone as a...

 

The old version of this social network can be found in this link: https://www.b4x.com/android/forum/threads/social-network-created-by-b4a-chat-included.136071/

After several times of work...

 

Hi all,

i have updated my webpage and decided to add a tutorial section.

My first tutorial is a simple calculator (+,-,*,/) there is a video tutorial incl. Source code on my site.

I will upload...

 

Hi to all
Based on this link https://www.b4x.com/android/forum/threads/b4x-cross-platform-chat-layout-example.112649/#content
I have added MQTT.
It's a simple example that I want to share...

 

Google never seizes to surprise us and its latest miracle is the following:

In order to fix this no matter if you have an EmailList set with the testers I have done two things. I do...

 

I was playing around with the ListView and found it a great use for a menu system.
Following along as much as possible with the design concepts defined on a Material.io design web site.

See...

 

Updated implementation, based on B4XPages of https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content.

The code is much simpler...

 

Starting from B4A v5.0, B4A-Bridge over Bluetooth is no longer available. You can use B4A-Bridge over wifi or USB debug mode to connect the IDE to a device.

By creating a mobile hotspot you can...

 

This is a example how to use the AS_TabMenuAdvanced together with the ASPopupMenuAdvanced.

For this example you need the 2 libs...

 

This applies to Google Billing V4.

I was following the tutorial to add in app billing to my app and I found that it would not work in test...

 

My need was to sync calendars in which user 'A' changes the calendar and sends the change to other users by writing records to the hosted database.
The other users query periodically to see it...

 

Searching the internet I came across this site that cumulates all the necessary data for the B4A developer:

Android API Levels

A quick reference table of Android versions with SDK & API levels, version codes, codenames, cumulative usage, and more.

apilevels.com