Tutorials & Examples

Posted in the B4J forum: https://www.b4x.com/android/forum/t...e-controller-with-b4x-home-automation.158628/

 

Using Kotlin libraries is similar to using Java libraries. The only difference is that we need to add references to two...

 

[B4X] Supabase - The Open Source Firebase alternative

Supabase is an open source Firebase alternative. It provides all the backend services you need to build a product. Supabase uses Postgres database with real-time capabilities. Basically, supabase provides an interface to manage postgres database that you can use to create table and insert, edit...

www.b4x.com

This is a very simple tutorial on how to download a file and show the progress in a...

 

For my latest wear app i needed two different launcher icons, each one starting one different activity of the same app. It's really easy to accomplish, it only needs to edit the manifest file...

 

The attached B4J example demonstrates how to implement lazy loading with editable items.

There are several interesting points...

 

Hi all,

This is a simple example of moving files across the internal/external memory boundary.
EG Transferring a CSV file from an external location to an internal folder to load a database in the...

 

Hello everyone, it's been a while since I posted here.
I had developed a conversation and research application in artificial intelligence, before publishing I offered two types of sales to see if...

 

[B4X] [XUI] AS CardSlider

A simple card slider with advanced customization options. I spend a lot of time in creating views, like this and to create a high quality view cost a lot of time. If you want to support me and further views, then you can do it here by Paypal or with a coffee. :) SideGap The width in dip, how...

www.b4x.com

Code

Private Sub B4XPage_Created (Root1 As B4XView)
    Root = Root1...

 

This starts recording video with your dji app

'put this in process globals

   Dim AircraftInstance As JavaObject
  

    Dim CameraInstance As JavaObject


'Put this in AfterAircraftConnected...

 

This is a B4i + B4A example. It adds a dynamic badge to the menu icon. It also shows how to update menu items at runtime.

Don't miss:
1. B4A - theme settings in manifest editor.
2...

 

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

 

In newer versions of B4A, B4J and B4i it is simple to share code modules between projects, including projects targeting other platforms.

More information here...

 

Hi,

Here is how you can set the scale mode of an ImageView like CSS background-size property.

'scale = cover,contain,fill
Public Sub SetImageView(iv As ImageView,bmp As Bitmap, scale As...

 

I am happy to announce that the both the paperback and electronic versions of the B4A tutorial and reference book “B4A Rapid Android App...

 

Hello,

(this is not a full tutorial, just a overview of this 2 tools)

I wrote my first animation in a app and with no idea what im doing i was running poorly...

While debugging i struggled with...

 

This example allows playing a midi file to an external USB device which you can select. It also allows delaying the messages send to the usb device so you can hear them at the same time as the...

 

This example allows creation of loops on multiple tracks as they are played. Just like a drum sequencer. It demonstrates creating a midi sequence and tracks, and adding events and messages...

 

This Tutorial will show you all needed Code to do Uploads to Dropbox.

Requirement for this tutorial: you need to have your App Dropbox-ready (see Tutorial I - Authentification).

Asuming...

 

This example loads a midi file and records an extra track from either the on board keyboard, or an external USB midi device.

Please be careful when saving files as the recorded track will be...

 

Hi,

If your Facebook and firebase configurations are all ok but the auth event is not raising or if you are getting An account already exists with the same email address but different...