Tutorials & Examples

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

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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...

 

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...

 

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:

#Region  Project Attributes...

 

I am happy to announce that the both the paperback and electronic versions of the B4A tutorial and reference book “B4A Rapid Android App Development using BASIC” by Wyken Seagrave have now been...

 

ENGLISH:
Good morning,
I would like to share the free course "Preparing development environment for B4 IOS".
This course helps prepare the B4I development environment and the MAc to start...

 

Hello Forum,

in this Example i want to show you, how to use the ASTabMenu togehther with the xCustomListView, to handle a lot of Tabs without getting into layout problems...

 

The new resumable subs feature, introduced in B4J v5.50, B4i v4.00 and B4A v7.00 (to be soon released), makes it simpler to work with large data sets with minimum effect on the program...

 

Hello,

I've been working with Firebase's realtimedatabase this week. There is no example yet of how to create rooms and send messages, but it is important for anyone who wants to make a chat in...

 

Edit: widgets are handled with receivers now. See the attached example.

This tutorial will explain how to implement your own home screen widgets (also named App Widgets).

It is important...

 

Hello everyone,

First of all, I want thank Erel, DonManfred and KMatle because a lot of the codes for them.

In this example (Select an image from gallery and display it, Resize the image, Save...

 

Maybe this info can be useful to someone.
Normally from B4A AVD Manager it's not possible to start more instances of the same AVD normally.
We get a Warning that executing many times the same...