Tutorials & Examples

How to Draw S-Curved Arrows Between Boxes / Rectangles

When I was building the spatial “tool for thought”, Jade, one frequently requested feature was drawing arrows between blocks, so we could make mind maps, flowcharts, etc. Here’s how I made it.

dragonman225.js.org

(Usually I think I tend to post things like this in Chit Chat, but that's not searchable from the forum search engine so I suppose it's better...

 

Recently for a web project I was forced to seek a solution in the use of Regex. I have found this site which teaches you and allows you to check the use of regex for matching strings etc. I...

 

The native use of B4x on M1 CPU is not possible. But using Parallels and Windows 11 Arm makes it possible to have a perfect working development environment. With one problem: there is no JavaFX...

 

B4A works fine in Parallels windows on M1 MAC.
Here are compilation times for same, fairly large project:
Could Erel comment on significant differences in time execution of various parts.
In...

 

Two great tools for testing webapps and webhooks

Researching the internet I have found two great tools that can be used for testing webapps and webhooks. The first is called ngrok. What it does is that it creates a tunel to your web app and makes it accessible from the internet through https without port forwarding. It acts as a kind of...

www.b4x.com

 

Hello to you all,
Here is a simple example on retrieving data from a REST API requested using the JSON Generator (you could also use http URL download), the same JSON library is also used to parse...

 

Disclaimer: I do not create/own the original project source code therefore please don't ask me to provide full support. I am just helping a member to make this project work. I do not get any money...

 

Disclaimer: I do not create/own the original project source code therefore please don't ask me to provide full support. I am just helping a member to make this project work. I do not get any money...

 

1. Click on button "Create app".

2. Enter your App name. Select App or Game.

3. Scroll down. Check all the declarations. Click on button "Create app".

4...

 

Hello,

i´m playing around with the Calendars on my Device and want to Query them. I found out how it works using ContentResolver querying the ContentProvider available in Android.

You can...

 

I just got a Skagen Falster 2 watch and logged my first experiences of trying to use B4A to develop aps for it. Here's what I did!

First of all setup the watch with the Wear OS app on a phone...

 

This is an enhanced version based on @Erel 's ContactsUtils v1.20.

NOTE: DeleteContact didn't work on an Amazon Fire tablet with Android 5.1.1 but did on a Moto X Style phone with...

 

Most of us know the material icons / fontawesome.

https://www.b4x.com/android/forum/threads/b4x-materialicons-web-font-chooser.103985/#content

That link is some what outdated. So made a...

 

This example uses SimpleMediaManager to show a list of 400 top sites, based on Alexa dataset.

Each item is made of two panels and a label:
- Panel for the favicon.
- Panel for the...

 

The ConnectAndReconnect sub takes care of connecting to the broker and reconnecting if the connection has broken.
It sends a "ping" request every 5 seconds to help the MQTT client recognize...

 

The "smart string" literal is a more powerful version of the standard string literal.
It has three advantages:

1. Supports multi-line strings.
2. No need to escape quotes.
3. Supports string...

 

Download library here: https://www.b4x.com/android/forum/threads/abwearos-library-1-0.98036/

This library requires B4A 8.50+

This library should implement the new datalayer...

 

Quickly create a File_Chooser, and choose any type of File without any Library.


Download code Here

 

    Dim metaRetriver As JavaObject
    metaRetriver.InitializeNewInstance("android.media.MediaMetadataRetriever", Null)
    metaRetriver.RunMethod("setDataSource"...

 

This flow chart will help you choose the folder in all kinds of different cases:

There were reasons to use other folders in the past. Those reasons are no longer relevant, mainly...