Tutorials & Examples

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...

 

An example of sending data from device A and display on device B screen using UDP protocol.
This is one of the solutions to this thread.
The code is kept since Aug 2023 but I don't see any...

 

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...

 

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...

 

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...

 

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

 

[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...

 

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...

 

[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...

www.b4x.com

This is a very simple tutorial on how to use the storage file options.

Upload File...

 

This is an example of how some apps like file managers, antivirus and other apps that depends on access to DirRootExternal to create folders, create files and read files from the Root of the...

 

There are some examples on this forum for
1. saving Webview content as Bitmap,
2. creating PDF file using Printing library and
3. opening or sharing the PDF file to WhatsApp using...

 

[B4X] PocketBase - Open Source backend in 1 file

PocketBase was created to assist building self-contained applications that can run on a single server without requiring to install anything in addition. The basic idea is that the common functionality like crud, auth, files upload, auto TLS, etc. are handled out of the box, allowing you to focus...

www.b4x.com

Please read the official documentation about deleting files in pocketbase...

 

Here is a modified example where the web api server excepts XML payload.
Required latest WebApiUtils v3.05 and MiniORMUtils.

Change the URL to server

Private URL As String =...

 

Hello,

UPDATE

This version includes Multiline Support and Guaranteed functionality. The last version had a lot of bugs, that new example is more mature.

At the moment, I'm...

 

Could some Java guru kindly convert the following codes into B4A code for me, if possible, please? I would greatly appreciate it!

I'm looking for a reliable solution as a background service...

 

[B4X] PocketBase - Open Source backend in 1 file

PocketBase was created to assist building self-contained applications that can run on a single server without requiring to install anything in addition. The basic idea is that the common functionality like crud, auth, files upload, auto TLS, etc. are handled out of the box, allowing you to focus...

www.b4x.com

Please read the official documentation about auth in pocketbase...

 

[B4X] PocketBase - Open Source backend in 1 file

PocketBase was created to assist building self-contained applications that can run on a single server without requiring to install anything in addition. The basic idea is that the common functionality like crud, auth, files upload, auto TLS, etc. are handled out of the box, allowing you to focus...

www.b4x.com

Please read the official documentation about storage in pocketbase...

 

[B4X] PocketBase - Open Source backend in 1 file

PocketBase was created to assist building self-contained applications that can run on a single server without requiring to install anything in addition. The basic idea is that the common functionality like crud, auth, files upload, auto TLS, etc. are handled out of the box, allowing you to focus...

www.b4x.com

This is a very simple tutorial on how to use the CRUD options. A more detailed...

 

I would like to contribute to the never-ending question of how to load local HTML files into a WebView. The reason are the following recently asked questions (here and here by...