Tutorials & Examples

[UPDATED]

Lately I've fallen into the habit of using Not instead of <> for Boolean comparisons - eg: Not(a = b) instead of a <> b. I'm not sure why I started doing this - probably because I think it...

 

Hi everyone,

in the following link you can find an animation about how the AES128/Rijndael cipher is implemented. As you will see, it is a mix of shifting/mixing/substituting (simple or by matrix...

 

This tutorial will demonstrate how you can use CustomBuildAction attribute to deploy to multiple connected devices at once.

The "additional" devices should be connected in USB debug mode. This...

 

Hi everyone,

I do not know if this is a suitable tutorial for this forum but I just found out and I am absolutely thrilled with it. There is a way to send SMSs from your mobile phone even from...

 

The purpose of this tutorial is to show a way of compiling Kotlin into your developed library as a “fat” JAR (a JAR file containing all necessary dependencies and classes bundled in).

Compared to...

 

Started here i released a tutorial about wrapping a library for b4a.
Basically this is the same here but i´ve caputed the hole process

Have fun (or be bored watching it). Hope it helps a...

 

Edit: If you are using B4A v7.8+ then a newer version of B4A Sdk Manager is preinstalled. Follow these instructions instead: https://www.b4x.com/b4a.html#installation

The GUI...

 

https://www.facebook.com/groups/177632729563622/

 

1. This tutorial is about BitmapCreator v3.5+.
2. It is relevant for B4A, B4i and B4J.
3. The features discussed are only needed when making hundreds or more drawings per second.

Drawing...

 

I know it has already been said that it is not easy to change colour of the progressbar.

but would this solution be possible to use within B4A?

How to Add Text Over a Progress Bar on...

 

This is a new feature added in B4A v8.0.

Starting from Android 8.0, services cannot be simply started while the app is in the background or not running at all. Background means that there isn't...

 

XUI library v1.4 adds support for asynchronous msgbox dialogs.

The API is simple:

xui.MsgboxAsync("Hello", "World")...

 

today i was in the requrement to write a search-routine in Database.
given was a table with lat an lon values. Goal was to find the nearest Entry.

Tablename: nw05
Fields: gidx (index), glat...

 

B4A Bridge connect to MEMU? Yes, you can.
Follow all instruction from this video:
I tested and work!!! (see images attached)

Thanks for TechAndMore (YouTube)

 

Small update: I use Download2 instead of Poststring now. It handles some things for us like removing illegal space, etc. Otherwise some examples wont work as decribed.


Part 1...

 

I often use Sqlite for my apps and I came across "DB Browser". It's a free tool to browse and edit SQlite databases and tables. Download it from here: http://sqlitebrowser.org/ For B4J apps...

 

I've just wasted an hour trying to understand why a desktop program that I'm using for many months failed to upload a file to a FTP server.
I realized that the only thing that was recently changed...

 

Old and irrelevant tutorial. Follow this one instead: [B4X] Net library (FTP, SMTP, POP) with Wait For

This tutorial covers the FTP object which is part of the Net library.
The Net...

 

Now and then there are JavaObject code snippets posted in the forum. Usually there are permissions required listed together with the code, but not always. Which could be because none are needed...

 

used library: ByteConverter 1.10, Core 8.0, RandomAccessFile 2.32, Reflexion 2.4 , USB 0.98
digital input only for this demo