Tutorials & Examples

This is an attempt to create a RPN calculator (Reverse Polish Notation - as per HP calculators). You can store (STO) and recall (RCL) values of register X. It will store and retrieve last value of...

 

Sometimes it is necessary to restore a previous version of your b4x projects/Project
you have made multiple changes but can not remember what was changed and you have to go back to a working...

 

Hi all, how can from button, show map location on google ? (without webview)

thanks

 

Here another Slid Panel.
I use the Ultimate List View ( paid from Informatix ) to swipe control, but someone can adapt the gesture library.

In the first time no image will appear in background...

 

Hi to all.
It's problem for us for access address http://localhost/your_project/script.php in Android Emulator.
if we enter http://localhost/your_project/ in emulator get error
Well...

 

This is an old tutorial. More powerful custom views: [B4X] Custom Views with Enhanced Designer Support

The attached project contains a code module which you can use in your projects to...

 

This is a Bash shell script that allows installing B4A, B4i & B4J in linux systems, along with their required dependencies.

Link to the main thread in the B4J sub-forum, please go there to...​

 

This isn't what I would call an actual tutorial, it's more like a very useful tip.

PLEASE NOTE: I'm not claiming that this is the only way to fix the issue, or even the correct way. But...

 

Using Agraham's Gestures library we can handle multitouch events.

This is an example of a simple drawing application that supports multitouch...

 

I am leaving this project here for now. The majority of the work has been done to extract the critical information of a QR code - it is reported in the text box to the right of the qr...

 

Normally a homescreen widget can only update itself every 30 minutes. A lower value is not possible in the ConfigureHomeWidget() call.

But what if you want to create something like a clock which...

 

A change is coming up on November 21 on Google Play. The applications considered by Google as not designed for tablets will be marked as designed for phones and, by default, won't appear for...

 

Hi all.

Here is a BAS module to do 5 card poker scoring. Its some ugly code but it works.

I have promised myself I was going to re-write this code for over a year but cannot seem to find the...

 

Uploading Photo to Facebook is possible now with B4a and a webview

This is based on Steve05 post here...

 

Hello Everybody,

In a new device SMART GEAR Live have a limitation with SDK, is not allowed put WEBVIEWs in a project.

In a B4A is accepted the WebView BUT in REAL not work...

 

The attached project is an example using the XtraViews library.

If one of the classes in that library is called "MovieView" then let's play some animated GIF movies.


Have fun...

 

What am I doing wrong

oRst = SQL.ExecQuery2("SELECT * FROM Bustrip ORDER BY sort Asc WHERE bus = ?", Array As String (Main.find))

 

This short tutorial will explain how to create custom transitions between activities.

The transitions must be declared in an XML file as described here: Animation Resources | Android...

 

Why use Activities?

In B4A as in Android, an activity is like a form in other languages such as Delphi, C++ Builder, VB, etc. Activities can start other activities, use code modules, classes, and...

 

An example of using Listview.
Open and save dialogs.
Screen orientation.
Don't forget to twist.

Done on 7 inch tablet.
B4A 2.3