Tutorials & Examples

Alternative to B4A Bridge: USB Cable Connection

• By wonder
• Aug 4, 2016

Step 1: On your mobile device, make sure you have USB Debugging activated.

Spoiler: How do I do it?

- Go to "Settings".
- Scroll down to the bottom and tap "About phone" or "About tablet",
- Scroll down to the...

 

Last edited: Sep 20, 2016

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Discovering iBeacon devices with BLE2 library

• By Erel
• Nov 8, 2015

This example uses the BLE2 library to continuously scan for BLE devices, looking for iBeacons.
It never connects to any device. It parses the advertising data and calculates...

 

Attachments

• iBeacons.zip

  11.4 KB · Views: 1,874

Last edited: Dec 7, 2015

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Perfect Crop + TouchImageView

• By Douglas Farias
• Jul 30, 2014

Hi all i made a simple crop example, later many try and try its here
if this help someone

Im using the @warwound lib TouchImageView
many thx to @warwound

this sample have one...

 

Attachments

• Crop Sample.zip

  496.3 KB · Views: 2,238
• 10511109_807459332617618_2723995257439844685_n.jpg

  41.9 KB · Views: 1,146
• 10514572_807459602617591_7148849783199956125_n.jpg

  47.5 KB · Views: 1,521
• 10527643_807459462617605_5852512570621737594_n.jpg

  57.2 KB · Views: 997

Last edited: Jul 30, 2014

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Custom WebSocket Based Push Framework

• By Erel
• Apr 24, 2014

The online example is currently disabled due to spam

Now that both B4A and B4J support WebSockets it is possible to implement a full push framework solution.
The solution is made of two...

 

Attachments

• Push_Client.zip

  11.5 KB · Views: 4,409
• WebSocketPush.apk

  143.7 KB · Views: 2,835

Last edited: Jul 28, 2014

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DBUtils - Android databases are now simple!

• By Erel
• Mar 30, 2011

Latest version available here: https://www.b4x.com/android/forum/threads/b4x-dbutils-2.81280/

The DBUtils code module is designed to help you integrate SQLite databases in your...

 

Attachments

• DBUtils.zip

  14.4 KB · Views: 5,561

Last edited: Jul 3, 2017

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[B4X] DateUtils - Simplifies Date and Time Calcuations

• By Erel
• Feb 12, 2013

DateUtils is a code module with a set of useful date and time related methods.
It complements DateTime api, it doesn't replace it.

The methods included in DateUtils:

B4X:

'Calculates the period...

 

Last edited: Feb 7, 2021

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Automatic adjustment of system date and time through GPS (root only)

• By rtek1000
• Dec 5, 2016

Please see:

GPS tutorial
Toggle Library
Toggle on/off GPS in any Android version
Set phone clock from GPS

Advantages:
- System date and time are updated periodically.
-...

 

Attachments

• GPS DateTime.zip

  10.4 KB · Views: 424
• Android 6.png

  40.7 KB · Views: 493
• Android 2.3.6.png

  13.9 KB · Views: 521

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Simple Code Module to implemente a License file using StringFunctions Encrypt

• By Pedro Caldeira
• Dec 3, 2016

B4X:

Type=StaticCode
Version=6.48
ModulesStructureVersion=1
B4A=true
@EndOfDesignText@
'******************************************************************************************************
'*...

 

Attachments

• Licensing.bas

  3.5 KB · Views: 348

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Colourful Indicator

• By Johan Schoeman
• Jul 18, 2015

It comes from here. The project displays as an example a colourful battery level indicator. Lib files are in the /files folder of the B4A project. The indicator will only update/redraw when...

 

Attachments

• FitChart.zip

  42.2 KB · Views: 554

Last edited: Jul 18, 2015

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SQL tutorial

• By Erel
• Dec 2, 2010

Update 2018:

New video tutorial:


The source code is available here...

 

Attachments

• SQL.zip

  8.1 KB · Views: 11,924

Last edited: Oct 2, 2019

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[Example] Creating a sticky service - long running background tasks

• By rtek1000
• Nov 25, 2016

Please see the original post:

About sticky service - long running background tasks...

 

Attachments

• Services_example.zip

  9 KB · Views: 581
• Screenshot_2016-11-25-12-23-53.png

  18.9 KB · Views: 602
• Screenshot_2016-11-25-12-35-40.png

  77.4 KB · Views: 636
• Screenshot_2016-11-25-12-37-41.png

  46.7 KB · Views: 609

Last edited: Nov 25, 2016

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Creating and Packaging a Wear App

• By barx
• Sep 5, 2014

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...

 

Attachments

• WearTest(handheld).zip

  109.1 KB · Views: 842
• WearTest(wearable).zip

  5.5 KB · Views: 776

Last edited: Sep 8, 2014

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Android Beam Tutorial

• By Erel
• Nov 25, 2015

Android Beam is a feature introduced in Android 4 that allows one device to transfer a message to another device by placing the devices back to back. The communication is based on NFC.

The main...

 

Attachments

• Beam.zip

  8.2 KB · Views: 899

Last edited: Nov 16, 2016

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How to make games

• By Informatix
• Sep 12, 2013

How to make games​

A great idea, but a disappointing result

You woke up one morning with a great idea for a game. You rushed to your phone to convince your best friend to...

 

Last edited: Oct 22, 2014

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Shared Code Modules

• By Erel
• May 8, 2014

Edit: shared modules are still supported however more powerful options are available in newer versions of B4X: https://www.b4x.com/android/forum/threads/86587

B4A v3.80 adds support...

 

Last edited: Jun 19, 2018

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Auto send KeyCodes.KEYCODE_BACK at runtime

• By Ganiadi
• Nov 1, 2016

Hi,
How to send / trigger the KeyCodes.KEYCODE_BACK at runtime without user clicking it

tks

 

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Tutorial - How to sign apk with non-B4A keystore

• By JonPM
• Jan 15, 2012

Here is my first tutorial for the community!

This tutorial will show you how to sign a B4A generated apk with a non-B4A keystore. I needed a way to do this for myself since I had some apps out...

 

Last edited: Feb 22, 2016

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[B4X] Anchors Demonstrated

• By Erel
• Feb 29, 2016

The anchors feature is simple to use and is...

 

Attachments

• AnchorsExample.jar

  317.1 KB · Views: 1,780

Last edited: Mar 1, 2016

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Android JSON tutorial

• By Erel
• Dec 16, 2010

JSON format is a a format similar to XML but usually it is shorter and easier to parse.
Many web services now work with JSON. JSON official site: JSON

Using the new JSON library, you can...

 

Attachments

• JSONExample.zip

  5.2 KB · Views: 6,004

Last edited: Feb 7, 2021

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Android Serial tutorial

• By Erel
• Dec 15, 2010

The code in this tutorial should not be used for new projects.
New tutorial: https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content

This...

 

Attachments

• SerialExample.zip

  6.3 KB · Views: 10,595

Last edited: Apr 4, 2018

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