Tutorials & Examples

MrKim · Nov 17, 2019

This subject keeps coming up so I thought I would do a tutorial and sample programs. One is B4A, the other is B4J. If you want code examples download the programs.

The B4J I created for testing...

mshafiee110 · May 13, 2020

1.Declare in your app manifest that your app supports RTL mirroring.
Specifically, add below code in your manifest.

B4X:

SetApplicationAttribute (android:supportsRtl, true)

2. Copy the code you...

KMatle · Dec 26, 2014

Update:

Newer releases of XAMPP come with MariaDB except of MySQL. Basically the same but the php scripts have to be changed a little bit:

- mysql is changed to mysqli
- "$con"...

Almora · Mar 22, 2020

API for live information about COVID-19

##source##

B4X:

Sub covid

    Dim cov1 As HttpJob
    cov1.Initialize("GetAddress", Me)...

DonManfred · Jan 11, 2019

While looking around on interesting projects to wrap i found a java console app (jar file) which is able to create and manage Certificates which can be used in your Server.
It manages Let´s...

margret · Feb 10, 2012

* * * B4A on the Kindle Fire Device * * *

This tutorial is being written to help notify/guide B4A users of known issues that have been found using B4A with the kindle fire device and some...

Erel · Oct 9, 2017

Starting from v1.70 of Net, jNet and iNet libraries the asynchronous methods return a 'sender filter' object.
This object can be passed as the sender filter parameter in a Wait For call.
This...

hatzisn · Apr 20, 2020

Hey everyone,

I just came across this video and I thought I should share it with you:

LucaMs · Apr 20, 2020

EDIT: created a more comfortable library (b4xlib) based on this code, B4XTblClmUtils:
https://www.b4x.com/android/forum/threads/b4x-b4xtblclmutils-v-1-0.116672/post-729034

B4X:

...

Almora · May 6, 2019

hi..
I prepared the youtube playlist using the examples in the forum.

Used libraries:
➡ Javaobject
➡ Labelextras
➡ Okhttputils2
➡ Snyoutube
➡ Stringutils
➡ Xcustomlistview
➡ Xml2map
➡ Xmlbuilder...

Erel · Apr 19, 2020

Lets say that we want to build a layout such as the above where the screen is split into two halves.

If we try to build this layout with a single layout file we will quickly meet a...

Erel · Apr 21, 2020

Use case: you downloaded an old example and you want to reset the manifest editor code so it will have the correct targetSdkVersion and theme.

Open the manifest editor, delete all text and save...

Erel · Oct 17, 2017

B4XCanvas is the cross platform version of Canvas.

Steps to using B4XCanvas:

1. Initialize and pass the target view. In most cases it will be a Panel (or Pane). It must be a Pane in B4J.
2. Make...

Erel · Feb 25, 2016

This library is based on the following open source project: https://github.com/astuetz/PagerSlidingTabStrip
License: http://www.apache.org/licenses/LICENSE-2.0

It...

MarkusR · Aug 26, 2019

Here is a ContentChooser Example project to choose a image at phone for use in a activity with image view. it works with B4A 9.x and Android 8.1...

arenaluigi · Mar 30, 2020

Good morning,
I'd like to share the free "Android Development Environment Preparation" course.
This course helps prepare the B4A development environment to start developing Android apps.
I thank...

Alessandro71 · Apr 12, 2020

Trying to find an automated way to build a B4X library, I found this method, I'd like to share for improvements and suggestions.
I'm using B4J as the development environment for the sake of...

Johan Schoeman · Apr 10, 2020

See attached B4A project:

1. It takes an image (png or jpg) and convert it into a byte array
2. The byte array is converted into a Base64 String
3. The String is then converted into a QR Code...

Peter Simpson · Apr 9, 2020

Hello All
I might be a bit late to the show with this one, but I've been busy completing paid work. Hopefully new members will find this useful.

The B4i example can be found here...

MarcoRome · Nov 30, 2017

Hi all. Interfacing B4A with Arduino is really very simple and you can create any kind of application.
This is a simple example:

Code B4A:

B4X:

#Region  Project Attributes...

Tutorials & Examples

Show only:

How to connect to SQL Server using jtds-1.3.1.jar

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RTL Layout Support

Complete tutorial: B4A & Your own (local) php & MySql Server (Xampp) with b4a

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COVID API

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[B4X] Manage your own Let´s Encrypt Certificates (ACME Client)

B4A on Kindle Fire & Amazon App Store Tutorial

[B4X] Net library (FTP, SMTP, POP) with Wait For

Create an Android virtual machine or laptop

[B4X] B4XTable - Setting cell (default label) properties

Youtube playlist with xml2map

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[B4X] Nested layouts

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[Tip] Reset the manifest editor code to the default code

[B4X] [XUI] Drawing with B4XCanvas

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TabStripViewPager - Better ViewPager

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ContentChooser Example (select image at phone)

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Free Mini Course Android Development Environment Preparation (B4A)

[B4X] B4X lib automatic build

QR Code - "Store" image/bitmap in a QR Code

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✅ Retrieving 2 JSON data feeds from an online server - Shared module with B4i

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Arduino / B4A

Tutorials & Examples

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