Tutorials & Examples

Introduction to the libGDX library​

What is libGDX ?

libGDX is a game engine. As we saw in the first tutorial, a game engine provides a framework to create...

 

B4A-Bridge is made of two components. One component is running on the device and the other is embedded in the IDE.
The device side is the server side. It waits for connections and when a...

 

This is a very old project which is unlikely to function correctly on newer versions of Android. The link to the project should still be active and if you want to use it for reference to...

 

This issue was solved with the B4A 13 Beta 6.

I saw many users (include me) with the problem "The filename or extension is too long", when try to compile the project with...

 

A C# friend who uses MAUI to develop Android apps, but the friend works well, so I recommend him to use B4A, and he got started after a few hours of basic tutorials. He implemented a way to make...

 

[B4X] [XUI] AS Settings

Introducing a new library that allows you to create your own settings page with minimal code. This library comes equipped with automatic saving and loading features, making it incredibly easy to manage your settings. It supports booleans, free text, numbers, comboboxes, action buttons and more...

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How to change the description text of a property:

AS_Settings1.MainPage.GetProperty("ExportDatabase").Description =...

 

example of getting file property information from uri provided by content chooser or received file shared to the app. Curtesy of Erel’s example: Received Share. Shows File name, Mime Type...

 

Have never done a B4A "wrapper" before making use of JavaObject only and thought I would see if I could get the PieChart of mpAndroidCharts implemented by using B4A's JavaObject only...

 

Hello friends, i wanna share with you a code that can you use it to get video resolutions avilables in played video (m3u8,mp4 ...) and show it in listview to select one of this qualities; :
do not...

 

This simple function converts Markdown-formatted text so that it can be used as CSBuilder.

This is particularly useful if, for example, you have created a text in MS Word with bold and...

 

[B4X] [XUI] AS Onboarding [Payware]

AS Onboarding is a view you can use to attract first-time users when they land on your app. Or to present new features after a major update, with pictures and descriptions. Or to collect user data at the 1st start of the app, many things are possible. The View is modular and can also be...

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In this example I show how you can easily change the theme e.g. from a dark theme to a light one and how to...

 

Simple example of a foreground service that keeps the process running in the background. The current location is shown in...

 

well hi too all .
As the title suggests, I want to teach you how to upload photos
I had searched a lot about it myself and had not found any results. By changing other people's codes, I was able...

 

This is a module base on CustomListview, all function same with CustomListview I call it CustomCardView. Hope this help.

For I = 0 To 5
'(the 47%x is cardview width, and the 45%y is the...

 

[B4X] Supabase - The Open Source Firebase alternative

Supabase is an open source Firebase alternative. It provides all the backend services you need to build a product. Supabase uses Postgres database with real-time capabilities. Basically, supabase provides an interface to manage postgres database that you can use to create table and insert, edit...

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Perform a function call.
You can call Postgres functions as Remote Procedure Calls...

 

This is a modified example, based in the original example from @Erel.
The previous example only make purchases.
This new example utilizes the Google Play Billing library v.7, changes...

 

This is just another example based on the ManageExternalStorage class provided by @agraham.
It is a response to this question.

B4ARepositoryWriter - writes a text file to an...

 

Just a simple example with a link to a file stored in File.DirInternal.

Required Archiver library.

This is a response to this thread.

 

Based on the example found at: https://www.b4x.com/android/forum/threads/spinner-font-typeface.27513/#post-159552

Here a short example to change the spinner after added the values:

Sub...

 

I'm just trying to add a background image to the 4x1 widget from the following excellent thread...