Tutorials & Examples

This guide is relevant for B4A, B4i and B4J.

There are all kinds of tools and libraries available for the different text based formats. The purpose of this guide is to organize the available...

 

The attached project comes from here (I have conducted some open heart surgery on it). It is working perfectly on my 7" tablet but on my Samsung S4 mini, unlike what is the case on my...

 

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...

 

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

SetApplicationAttribute (android:supportsRtl, true)

2. Copy the code you...

 

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"...

 

API for live information about COVID-19

##source##

Sub covid

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

 

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...

 

* * * 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...

 

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...

 

Hey everyone,

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

 

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

...

 

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

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

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...