Tutorials & Examples

The attached b4xlib library is a cross platform list of colors:

It is a XUI custom view. The custom view is based on two...

 

Cross platform version, based on B4XPages, of...

 

CloudKVS solves a difficult and common problem. The user needs to work with online data, however as this is a mobile app we cannot assume that the device will always be connected to the remote...

 

This is a simple example that demonstrates a recommended method of sharing code and files between B4A, B4i and B4J.
It is...

 

Have done this just for the fun of it. Have wrapped this posting. The B4A code is short and sweet:

#Region  Project Attributes
    #ApplicationLabel: Compass
    #VersionCode: 1...

 

The next code add the funcionality in b4x to capture the click & longClick using Touch, in case of b4j add the option to fire the longClick using the Right Mouse Click or the secondary mouse...

 

Hi,

Had made an application in B4A (my first in B4A) to display COVID-19 statistics.
Lots of data is specific to India. You can change them to reflect data from your country.

Used quite a bit of...

 

Edit: Starting from v5.00 there is support for multiple themes. See this post for more information: https://www.b4x.com/android/forum/threads/themes-and-fonts-in-5-0.54338/#post-340927

 

SavePictureToFile(XUIImageToJPEGByteArray(CreateThumbnail(xui.LoadBitmapResize(File.DirAssets,"Snapchat-248558753.jpg",150dip,150dip,True)),150dip,150dip,50),File.DirRootExternal,"test.jpg")

...

 

This example uses PreoptimizedCLV to create a list of BBCodeViews.
In most cases it will be simpler to create a single BBCodeView, as BBCodeView is scrollable. However there might be...

 

Custom views are designed to be added with the designer.

It is however very simple to create a layout file with the custom view and load it multiple times...

 

This is a common question and for a good reason.

Custom views classes are not views by themselves.
The views tree only holds views.
This means that this code cannot work:

Dim...

 

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...