Tutorials & Examples

Hello all,
Here is a quick video to show how simple it can be to transfer your B4A projects to B4J when using XUI. It's been on my mind all days now, so I thought I would give it a go and also...

 

For anyone who has problems connecting b4a to Xiaomi mobile phones, I make the link available where I found the Google usb driver to connect xiaomi mobile phones to b4a via usb. Download the...

 

v13.4 - July 16, 2025 - https://www.b4x.com/android/forum/threads/b4a-v13-4-is-available-for-download.167803/

• New command line tools and prepackaged SDK.
• SDK handling...

 

Your app has been removed on Google Play.
Sample code for those who have previously installed the application not to use it again.

Sub Globals
    Dim job1 As HttpJob
    Dim xui as XUI
End...

 

Example of implementing a chat layout.
It is based on xCustomListView. The text is created with a hidden BBCodeView (BCTextEngine) and the bubble is drawn with BitmapCreator...

 

API documentation - B4a, B4i, B4J and B4R (i.e. B4X) Object Browser (which also includes Code Snippet Management)

Hi everyone,

As you may or may not be aware, I have embarked on a...

 

Hi every one and season's greetings,

(11-1-2020) New version of the tool with timestamp and "Transfered <Checkbox>"


When I program I am used to keep notes in my code to know...

 

In this example i can take a photo or choose an image from gallery and put it in ImageView

 

Note that OkHttpUtils2, jOkHttpUtils2 and iHttpUtils2 are actually the exact same b4x library.

Starting from v2.90 it is very simple to initialize the internal http client with the 'accept all'...

 

Not exactly a tutorial or Android-only, but a hint to the community for those who like playing with home automation stuff, and possibly for others as well. I happened across this very nice device...

 

Hello,

i have searched for a long time for a fix for this, every time i have B4A on my second monitor on my mac, then the text was blurry and this was no fun to work with...

Now i have a fix for...

 

BitmapCreator (BC) continues to evolve. Version 4.5 update is a large update with several new drawing features.

Background

At its core BC holds an array of bytes that represent an image...

 

The HttpServer library is a new library, based on an open source project named Jetty. This library allows you to easily embed an Http server in your application.

Http server means that you...

 

B4XTable.SetData expects a List where each entry in the list is an array of objects with the data of a single row.

The data can come from any source you like...

 

Hi Friends,

As you know, I made an online sheet of Walt's B4XGoodies List and he helped me by providing download links of html and version text files...

 

Example was updated based on FileProvider class: https://www.b4x.com/android/forum/threads/class-fileprovider-share-files.97865/
See the above link if you are interested in sharing...

 

Using the NFC library you can read NFC tags formatted in NDEF form (NFC Data Exchange Format).
You can read more information about the internal process here: NFC Basics | Android Developers...

 

Android Support Library was implemented and maintained in the last 8 years by Google. It includes a wide range of features and it hides many of the differences between the various Android...

 

This is an extension to the MQTT chat room example: https://www.b4x.com/android/forum/threads/b4x-mqtt-chat-room.61568/#content
It is a chat room where one of the devices acts as a server...

 

Hello

I would like to share some observations with you all, is is based on https://www.b4x.com/android/forum/threads/background-location-tracking.99873/#post-628468

A problem that we all...