Tutorials & Examples

Erel · Jun 13, 2013

Better to use: https://www.b4x.com/android/forum/threads/simple-progress-http-download.127214/#post-796463

The attached project includes a slightly modified version of HttpUtils2 and...

Erel · Jan 1, 2013

Starting from Basic4android v2.50 you can compile your project, or part of it to a regular library.

Why should I compile a library?

Break large projects into several smaller (more...

junglejet · Nov 9, 2019

I decided to become Google's darling. After a very old B4A app, that went perfect for many many years (API 8, targetSDK 14), was threatened to be thrown out of the app store, I decided to waste my...

Douglas Farias · Oct 31, 2019

Hi all.
Here is a simple pou game example (only one room).

This example use this another example, but now with images...

LucaMs · Oct 28, 2019

[A simple suggestion, not addressed to "experts"]

I am almost certain that some members, having to identify which view triggered an event, use the tags.

For example:

You have a kind...

Erel · Oct 23, 2019

The attached B4J example demonstrates how to implement lazy loading with editable items.

There are several interesting points...

makis_best · Oct 7, 2019

With this example I show how a decimal number can be translated to Greek words.

For example: Log(DeployCurrencyToText(1234.04)) give the result χίλια διακόσια τριάντα τέσσερα ευρώ και τέσσερα...

DonManfred · May 3, 2014

We start with a few DIMs for needed Variables

B4X:

sub Globals
    Dim ffiles,ffolders As List
    Dim root As String
End Sub

and a main sub from this tutorial

B4X:

Sub ReadDir(folder As String...

tufanv · Mar 22, 2017

Hello,

This is the first time I am preparing a tutorial for this great community so please excuse me for any mistakes or weak explanations. Methods of some of the implementation may not be %100...

Johan Schoeman · Dec 23, 2014

This is a simple project that makes use of the device's vibrator. You can do the following:
1. Switch the vibrator ON for a specified duration of time (in milliseconds)
2. Switch the vibrator...

Erel · Sep 8, 2019

Question: How can I build a layout with X controls spread horizontally or vertically?

Answer: You can use the designer script for this. As the designer script engine (currently) doesn't support...

Erel · May 11, 2011

Several developers were interested in adding support for signature capturing in their Android application.
The attached code module makes it easy to capture the signature and save it to a file...

wonder · Jun 21, 2017

What is Version Control?

Version control software keeps track of every modification to the code in a special kind of database. If a mistake is made, developers can turn back...

OliverA · Oct 5, 2018

Part 1: The key

This is just a write up of my findings regarding the exchange of encrypted data between B4A/B4J and LockBox3 (Delphi). This write up focuses just on LockBox3's implementation of...

Erel · Sep 13, 2017

Google Maps uses the GPS as its location provider. It will not show the current location if GPS is disabled.
It is possible to switch to a custom location provider.

For example, here is me...

Douglas Farias · Oct 19, 2018

Hi all.
I found this example in some old folders on my pc and decided to share here.
it is a simple layout example, the app is whatsapp

This example use a clv and tabstrip

...

Douglas Farias · Nov 26, 2018

Hi all.
this example play Happy birthday to you music with beep. (Audio librarie)

B4X:

Sub Globals
    Private lNotas As List
    Private lbNotas As Label
    Private tocando As Boolean
End Sub...

Douglas Farias · Oct 19, 2018

Hi all.
I found this example in some old folders on my pc and decided to share here.
it is a simple example of how notcreate a ventilator in B4A.

On this example have, image...

Douglas Farias · Jul 31, 2019

Hi all.
I made a simple collision example, where our player (black square) can collide with any other view that has the tag = 1

This example is in Portuguese obviously because I am Brazilian, I...

JordiCP · Jun 13, 2017

This is a full working example of real time ObjectDetection (in this case, cars) using cascadeClassifiers, getting the input from a recorded video file, making use of Videocapture. The example was...

Tutorials & Examples

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Download huge files with HttpUtils2

Attachments

Library compilation - Compile your project to a library

Upgrading a Google Maps app to targetSDK 28

POU Game example

[B4X] SELECT - don't waste tags

[B4X] xCLV - lazy loading with text input

Attachments

Decimal Number to Greek Words - Olografos

recursive Directorystructures and what to do with this filelist

Admob Mediation With Facebook

Vibrating Service - Also with Java code inside B4A project

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[B4X] [Visual Designer] Spreading Controls

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Signature Capture Tutorial

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Using a Git Repository (Version Control) for Beginners

LockBox3 (Delphi) AES encryption exchange with B4A/B4J

Google Maps with FusedLocationProvider

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WhatsApp Layout Example (Tabstrip + CLV)

Happy birthday to you (Beep example)

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Ventilator Example (it's really windy)

Simple views colision (RPG Game)

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OpenCV real time car detection examples, by @moster67 (and friends)

Tutorials & Examples

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Privacy & Transparency

Privacy & Transparency