Tutorials & Examples

SQLite Viewer is an open source application that allows you to view the contents of SQLite databases right from your Android device...

 

Please start with the first part of this tutorial if you haven't read it before.
In this part we will build a "quote of the day" widget...

 

New method to add shortcuts: https://www.b4x.com/android/forum/threads/support-for-app-shortcuts.86663/#post-548645
Updated instructions for this method...

 

Updated implementation, based on B4XPages of https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content.

The code is much simpler...

 

Google has deprecated the previous method of sending push notifications. It will stop working on June 2024.
If you have an already working solution then you only need to update the B4J side. Do...

 

Downloading resources is simpler with the new Resumable Subs feature.

Using Wait For we can wait for the JobDone event in the same sub that started the download.
No...

 

Update:

Newer releases of XAMPP come with MariaDB except of MySQL. Basically the same but the php scripts have to be changed a little bit:

- mysql is changed to mysqli
- "$con"...

 

This is an old thread. It is not relevant if you are using newer versions of B4A.

In order for your current applications to run properly on Android 5.0 devices you need to:

1. Compile your...

 

Data source: https://ourworldindata.org/coronavirus-source-data

Cross platform example based on B4XTable and xChart...

 

This tutorial will show you how to create an app for a Wearable device and how to package it so it auto installs.

What is Android Wear?
For those that do not know, Google has released...

 

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...

 

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...

 

Using the phone accelerometer it is possible to handle shake events.
The problem is of course to decide if the stream of values represents a shake.

The Shake code module finds shake patterns and...

 

Blockchain
A digital ledger in which transactions made in bitcoin
or another cryptocurrency are recorded chronologically and publicly.
In more general terms, it’s...

 

This guide is obsolete ! It is no more updated.
Please use the B4X Booklets.

A User's Guide in pdf format is available here : www.b4x.com/android/files/UserGuide.zip

This...

 

Edit: Google AdMob does support rewarded ads without mediation.
You can use this unit id to test it: rewardAd.LoadAd("ca-app-pub-3940256099942544/5224354917")
Make sure to use FirebaseAdMob...

 

For new projects it is recommended to use the more recent API (v3): http://www.b4x.com/forum/basic4andr...ls/29997-android-app-billing-v3-tutorial.html

Android...

 

Search is a core feature of Android. You can use a configurable standard search dialog for performing searches in your app. This search dialog can also be used within a Basic4Android App (with...

 

I think one of the easiest way is using Android SDK tools. I'll explain this method using Windows, but in Linux or Mac should be similar. This is what you have to do:
-Connect your mobile to...

 

Android Things is a new project of Google that extends the Android OS to SoC (System on a Chip) boards such as Raspberry Pi and Intel Edison.

https://developer.android.com/things/index.html...