Tutorials & Examples

Starting from B4A v7.0 the following warning will appear for DoEvents calls:
DoEvents is deprecated. It can lead to stability issues. Use Sleep(0) instead (if really needed).

The purpose of...

 

This isn't really a tutorial but rather a recommendation for a diff tool. Sometimes you need to compare files, or even directories, and doing it manually is just too painful and difficult. I've...

 

To deliver more engaging viewing experiences to their users, many Android OEMs are experimenting with new, super widescreen smartphones. Samsung has just announced a new flagship device, the...

 

It is simpler to parse XML with Xml2Map class: https://www.b4x.com/android/forum/threads/b4x-xml2map-simple-way-to-parse-xml-documents.74848/

The XmlSax library provides an XML Sax...

 

After making more than 58k posts in the forum, I decided that it is a good time to build a list of tips and common mistakes. 12 points, in no particular order:

1. Separate code from...

 

(This is the first of a small series of code-based tutorials that I will post regarding OpenCV for B4A. I will try to focus mainly on how to use OpenCV in B4A, tips, best practices...

 

Dear,

I've read there are two "kinds" of SMS: normal text SMS and Data SMS: http://developer.android.com/refere...ager.html#sendDataMessage(java.lang.String...

 

While I'm new. I can not find a full and detailed example. How to make a beautiful effect for button when I click button. I like using a gradient fill please. I did not use in my work designer...

 

Basic4android v1.8 introduces a new tool named Manifest Editor.
Every Android application includes a file named AndroidManifest.xml.
This is an XML file that describes the application for the OS...

 

HttpUtils2 was replaced with OkHttpUtils2: https://www.b4x.com/android/forum/threads/okhttp-replaces-the-http-library.54723/
Both libraries are included in the IDE.


HttpUtils2 is a...

 

I am going to try and wrap this (CircularButton) from here
https://github.com/Alexrs95/Circula...alexrs/circularbutton/lib/CircularButton.java
Found it on the android-arsenal.com website...

 

I noticed this being asked a few times so I thought I'd share the version I've created.

This implementation requires that you have a server with PHP and MySQL. I am by no means a PHP or MySQL...

 

By default, when there is an uncaught exception the program will show a message box with the error title and the user will be asked whether they want to continue or not.

There are several...

 

The #AdditionalJar module attribute (introduced in B4A v3.80) allows us to reference external jars.
With the help of JavaObject it is now possible to integrate third party jars without a wrapper...

 

I have moved all my projects from Eclipse to Android Studio, so decided to write how I have done for generating JAR and XML file for Basic4Android.

1. Create new project - File>New Project or if...

 

An improved version, based on CallSubDelayed is available here.
This example demonstrates how to work with more than one activity and how to pass information between the activities.
In...

 

The attached program displays the values of the different sensors:

It creates a PhoneSensors object for each type of sensor.
As you can...

 

The MediaPlayer is used to play audio files.
MediaPlayer supports formats like: mp3, midi, wave and ogg. The full list is available here: Android Supported Media Formats | Android Developers...

 

Edit: please see the updated tutorial: https://www.b4x.com/android/forum/threads/62488/#content

Starting from v2.70, the visual designer supports custom views.

Note that the WYSIWYG...

 

This tutorial is no longer relevant. Google doesn't allow using WebView to access the server response. Updated tutorial...