Tutorials & Examples

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: 2,350
• 10511109_807459332617618_2723995257439844685_n.jpg

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• 10514572_807459602617591_7148849783199956125_n.jpg

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• 10527643_807459462617605_5852512570621737594_n.jpg

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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: 4,549
• WebSocketPush.apk

  143.7 KB · Views: 2,938

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: 5,732

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: 517
• Android 6.png

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• Android 2.3.6.png

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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: 403

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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: 610

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: 12,102

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

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• Screenshot_2016-11-25-12-23-53.png

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• Screenshot_2016-11-25-12-35-40.png

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• Screenshot_2016-11-25-12-37-41.png

  46.7 KB · Views: 672

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: 903
• WearTest(wearable).zip

  5.5 KB · Views: 850

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: 983

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: 1,879

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: 6,149

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: 10,732

Last edited: Apr 4, 2018

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SVN (source control) and Basic4android

• By Erel
• Jul 26, 2011

Large projects and especially projects maintained by a group of developers usually require a source control system.
Using SVN with Basic4android is quite straightforward with a client tool such as...

 

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Testing your app on real devices: pCloudy.com

• By Mashiane
• Sep 20, 2016

Hi there

I'm hoping there are other methods of doing this..., if so, let's please share.

Anyway, a client was indicating the app I just sent does not work on their S7 samsung phone. So me, #bang...

 

Attachments

• pCloudy.png

  97.8 KB · Views: 663
• googlecrash.png

  18.2 KB · Views: 548

Last edited: Sep 20, 2016

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