Tutorials & Examples

[B4X] Creating a cross platform custom view packed as b4xlib

• By Erel
• Jul 24, 2019

The attached b4xlib library is a cross platform list of colors:

It is a XUI custom view. The custom view is based on two...

 

Attachments

• ColorsListProject.zip

  18.4 KB · Views: 861
• B4J ColorsList Usage Example.zip

  1.9 KB · Views: 838
• ColorsList.b4xlib

  9.4 KB · Views: 777

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[B4X] [B4XPages] Network + AsyncStreams + B4XSerializator

• By Erel
• Jun 14, 2020

Cross platform version, based on B4XPages, of...

 

Attachments

• Network Example.zip

  220.7 KB · Views: 3,359

Last edited: Jun 30, 2020

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[B4X] CloudKVS - synchronized key / value store

• By Erel
• Feb 15, 2016

CloudKVS solves a difficult and common problem. The user needs to work with online data, however as this is a mobile app we cannot assume that the device will always be connected to the remote...

 

Attachments

• B4J_ServerKVS.zip

  2.8 KB · Views: 2,482
• B4i_ClientKVS.zip

  8.7 KB · Views: 1,556
• jBuilderUtils.zip

  2.3 KB · Views: 3,205
• B4A_ClientKVS.zip

  11.6 KB · Views: 2,470
• B4J_ClientKVS.zip

  6.4 KB · Views: 1,943

Last edited: Jul 17, 2016

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[B4X] Cross platform example

• By Erel
• Feb 19, 2020

This is a simple example that demonstrates a recommended method of sharing code and files between B4A, B4i and B4J.
It is...

 

Attachments

• Guess My Number.zip

  227.1 KB · Views: 1,082

Last edited: Apr 12, 2020

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Simple Compass

• By Johan Schoeman
• Apr 9, 2016

Have done this just for the fun of it. Have wrapped this posting. The B4A code is short and sweet:

B4X:

#Region  Project Attributes
    #ApplicationLabel: Compass
    #VersionCode: 1...

 

Attachments

• TheJavaCode.zip

  37.4 KB · Views: 1,214
• b4aCompass.zip

  105.8 KB · Views: 1,515
• CompassLibFiles.zip

  6.5 KB · Views: 1,542

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[B4X] SwiftButton - Adding Click/LongClick event

• By Myr0n
• Jun 3, 2020

The next code add the funcionality in b4x to capture the click & longClick using Touch, in case of b4j add the option to fire the longClick using the Right Mouse Click or the secondary mouse...

 

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COVID-19 Info Example

• By IndieDev
• Jun 2, 2020

Hi,

Had made an application in B4A (my first in B4A) to display COVID-19 statistics.
Lots of data is specific to India. You can change them to reflect data from your country.

Used quite a bit of...

 

Attachments

• pkCovid.zip

  372.1 KB · Views: 739

Last edited: Jun 8, 2020

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IDE Color Schemes

• By Erel
• Jan 12, 2012

Edit: Starting from v5.00 there is support for multiple themes. See this post for more information: https://www.b4x.com/android/forum/threads/themes-and-fonts-in-5-0.54338/#post-340927

 

Last edited: Jun 11, 2015

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[B4X] Create Thumbnail and save it

• By Alexander Stolte
• May 27, 2020

Usage:

SavePictureToFile(XUIImageToJPEGByteArray(CreateThumbnail(xui.LoadBitmapResize(File.DirAssets,"Snapchat-248558753.jpg",150dip,150dip,True)),150dip,150dip,50),File.DirRootExternal,"test.jpg")

...

 

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[B4X] xCLV + PreoptimizedCLV + BCTextEngine

• By Erel
• May 24, 2020

This example uses PreoptimizedCLV to create a list of BBCodeViews.
In most cases it will be simpler to create a single BBCodeView, as BBCodeView is scrollable. However there might be...

 

Attachments

• BBCodeCLV-B4A.zip

  24.1 KB · Views: 998
• BBCodeCLV-B4i.zip

  184.8 KB · Views: 736
• BBCodeCLV-B4J.zip

  17 KB · Views: 751

Last edited: May 27, 2020

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[B4X] I need 100 <custom view here>s. How to add programmatically?

• By Erel
• May 21, 2020

Custom views are designed to be added with the designer.

It is however very simple to create a layout file with the custom view and load it multiple times...

 

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[B4X] How to get <custom view here> from <CLV or any other container>

• By Erel
• May 20, 2020

This is a common question and for a good reason.

Custom views classes are not views by themselves.
The views tree only holds views.
This means that this code cannot work:

B4X:

Dim...

 

Last edited: Sep 10, 2020

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[B4X] Text, Strings and Parsers

• By Erel
• Sep 4, 2017

This guide is relevant for B4A, B4i and B4J.

There are all kinds of tools and libraries available for the different text based formats. The purpose of this guide is to organize the available...

 

Last edited: May 19, 2020

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RippleView

• By Johan Schoeman
• Aug 8, 2015

The attached project comes from here (I have conducted some open heart surgery on it). It is working perfectly on my 7" tablet but on my Samsung S4 mini, unlike what is the case on my...

 

Attachments

• b4aRippleView.zip

  38.2 KB · Views: 1,212
• JavaCode.zip

  145.6 KB · Views: 1,099

Last edited: Aug 8, 2015

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How to connect to SQL Server using jtds-1.3.1.jar

• By MrKim
• Nov 17, 2019

This subject keeps coming up so I thought I would do a tutorial and sample programs. One is B4A, the other is B4J. If you want code examples download the programs.

The B4J I created for testing...

 

Attachments

• SQLTestB4A.zip

  8.6 KB · Views: 1,375
• SQLTestB4J.zip

  3.3 KB · Views: 1,032

Last edited: Nov 17, 2019

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RTL Layout Support

• By mshafiee110
• May 13, 2020

1.Declare in your app manifest that your app supports RTL mirroring.
Specifically, add below code in your manifest.

B4X:

SetApplicationAttribute (android:supportsRtl, true)

2. Copy the code you...

 

Last edited: May 13, 2020

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Complete tutorial: B4A & Your own (local) php & MySql Server (Xampp) with b4a

• By KMatle
• Dec 26, 2014

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"...

 

Attachments

• Example_B4A_APP_Xampp.zip

  9.7 KB · Views: 4,617
• persons.zip

  582 bytes · Views: 4,067

Last edited: Feb 28, 2016

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COVID API

• By Almora
• Mar 22, 2020

API for live information about COVID-19

##source##

B4X:

Sub covid

    Dim cov1 As HttpJob
    cov1.Initialize("GetAddress", Me)...

 

Attachments

• cov.zip

  14.1 KB · Views: 740
• Screenshot_1584876341.png

  8.4 KB · Views: 940
• Screenshot_1584876347.png

  10.4 KB · Views: 995
• Screenshot_1584895171.png

  18.2 KB · Views: 959

Last edited: Mar 22, 2020

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[B4X] Manage your own Let´s Encrypt Certificates (ACME Client)

• By DonManfred
• Jan 11, 2019

While looking around on interesting projects to wrap i found a java console app (jar file) which is able to create and manage Certificates which can be used in your Server.
It manages Let´s...

 

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B4A on Kindle Fire & Amazon App Store Tutorial

• By margret
• Feb 10, 2012

* * * B4A on the Kindle Fire Device * * *

This tutorial is being written to help notify/guide B4A users of known issues that have been found using B4A with the kindle fire device and some...

 

Last edited: Feb 24, 2012

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