Tutorials & Examples

There are many occasions when you need to have multiple labels which all size themselves to their contents and also align with each other with no space.

The solution to this is to use...

 

This is an ULV example I wanted to share for a long time, since I thought it was *very* cool.

It demonstrates:
- Sticky headers
- Swipe gestures
- Animations (appearing out)
- Selected State...

 

Hi

Here is a tutorial that shows the steps of how to make an Android connection to MS SQL Server using jRDC2.

Download tutorial here:
Attached the Mobile...

 

In this example we add a MiddleButton that is larger than the internal one and is outside the TabMenu.

...

 

Starting from B4A v5.0, B4A-Bridge over Bluetooth is no longer available. You can use B4A-Bridge over wifi or USB debug mode to connect the IDE to a device.

By creating a mobile hotspot you can...

 

Please test scanning of your NFC enabled credit card using the APK in the download link below. Please ensure that you have enabled NFC on your cell/device before you do a scan - the...

 

Hello hope your'e well.
Apps are getting more and more complicate and to work with the user needs a manual. This examples shows how you can add an help dialog to your B4XPages Project. The help...

 

It's time to learn how to use MQTT: https://www.b4x.com/android/forum/threads/59471/#content
It is simple and powerful. In most cases MQTT is the best solution for low level networks. Low...

 

Camera2 library is based on the Camera2 API introduced in Android 5 (API 21).
It is designed to work together with CamEx2 class.
It is supported by B4A v7.3+. The library will be included as...

 

Hello
This is an example of how to back up and restore the SQL Lite database as the database produces three files with three extensions
with the following extensions 'db.db'...

 

For the First I said Thank Too Much For Great Mr.Errel That my Inspirator, StarDust and All Of member that i can't say person by person, i wish yours appologize of my bad english, this my first...

 

android 12

 

There are many ScrollView examples on the forum, I made a summary of them for my own use and I think it would be interesting for others.

Creating a table view based on ScrollView...

 

Hi everyone,

I posted a thread long ago about the audio/video calling over the internet. Here is a simple example of how you can call almost (will discuss below) realtime.

Why only a...

 

If you want to check if the application is running on a Chromebook (for example to do some specific GUI reconfiguration to run in a resizable Window), you can use the following routine.
Hope it...

 

I had to deal with a database format transformation problem from Firebird to SqliteDb
I want to share my experience because I've already seen some users who asked questions about Firebird...

 

I've just added a speech to text facility to my note taking app using

SpeechToText - Continuous Offline Voice Recognition

This is a wrapper of Acephei VOSK , With this, you can add continuous offline speech recognition feature to your application, NOTE: As it works offline the app should be complied with the voice model. It will increase the app size by 30-40Mb. The accuracy depends on the voice model. You can...

www.b4x.com

and text...

 

With the new imodules that allow you to work better with the intent and receivers, it is necessary to develop some examples of how to use them (even before it could be done but not in...

 

Geofencing is an Android feature that allows your app to be notified when the user enters or exits a monitored region.

The nice thing about this feature is that your app doesn't need to run for...

 

if you want to build instant music in apps from single sounds, it is important that the samples are absolutely synchron and perfect in timing. So you should send one single stream to the system...