Tutorials & Examples

How to make a simple splash scree (that you can understand)

• By wheretheidivides
• May 12, 2011

This is tutorial of how to make a splash screen in B4A. There are 3 sections. Just copy and past the code. In the designer save the layout as "LayoutMain.bal" and make a "Panel1" in that layout...

 

Click to expand...

Connecting to HTTPS (secured) urls

• By Erel
• Dec 23, 2010

New tutorial: [B4X] OkHttpUtils2 / iHttpUtils2 and accept all option

Spoiler: irrelevant

The HTTP library and the underlying Apache HTTP component takes care of secured web pages automatically. The...

 

Last edited: Jun 22, 2021

Click to expand...

GIF FILE - 3 x ROTATING EARTH

• By Johan Schoeman
• Oct 1, 2014

An example of the rotating earth with 3 x image views displaying the same GIF file but each separated by 120 degrees from the other. You will need to download the GIF file from here...

 

Attachments

• EARTH ROTATING.zip

  8 KB · Views: 1,069

Last edited: Jul 8, 2015

Click to expand...

ImageView

• By jonydoboi
• Sep 30, 2014

This program displays pics of the same size as the ImageView. Made on an 7 inch tablet.
Program is not ready to go. Need to create folder and place same size pics in folder.
My device info is...

 

Attachments

• Pic4.zip

  6.7 KB · Views: 647

Click to expand...

Clock - 24hr analogue clock

• By Johan Schoeman
• Sep 28, 2014

This was done just for fun. It is a 24 hour analogue clock/watch. Have used the GPS Example from @klaus as base for this clock.
JHS CLOCK V1 => a 24 hour clock running clockwise...

 

Attachments

• JHS CLOCK V1.zip

  173.4 KB · Views: 1,194
• JHS Clock Panels.zip

  19.6 KB · Views: 989
• JHS CLOCK TIME TRAVEL.zip

  174.6 KB · Views: 961

Last edited: Jul 8, 2015

Click to expand...

Service and Sockets for beginners

• By Straker
• Sep 24, 2014

I've made a very simple project which periodically connects to a VB6 Server.
The code is well commented with notes for programmers coming from VB6.

In this code I use once ExitApplication. It's...

 

Attachments

• SocketService_3.zip

  29.7 KB · Views: 1,041

Last edited: Oct 14, 2014

Click to expand...

Random Numbers, Timer, ExitApplication

• By jonydoboi
• Sep 23, 2014

Random Numbers.
Timer.
ExitApplication.

 

Attachments

• RandomNumbers.zip

  7 KB · Views: 986

Click to expand...

Service Module Example

• By jonydoboi
• Sep 23, 2014

Service Module using CallSub.

A very simple example. I thought you had to use CallSub from an Activity, but had it backwards.

 

Attachments

• ServiceModule3.zip

  7.2 KB · Views: 952

Click to expand...

Translucent Status bar / Navigation keys

• By barx
• Jul 5, 2014

NOTE: there may be a way to achieve this already in B4A that I'm not aware of.

This little tutorial will show you how to create an app with translucent status bar And/Or navigation keys...

 

Click to expand...

Save all Edittexts & corresponding labels on a view to a file (JSON) and reload them

• By KMatle
• Sep 11, 2014

If you build an app which uses a larger form you might have realized this by pairs of labels and edittexts. The label ist used for the description (f.e. "Name") and the edittext will contain the...

 

Click to expand...

Tinyurl shortening

• By merlin2049er
• Sep 8, 2014

Here's a quick little example of how to shorten your urls using tinyurl.com.

Thanks to TDS, who provided the solution.

 

Attachments

• TinyUrlSample.zip

  7.7 KB · Views: 508

Last edited: Sep 8, 2014

Click to expand...

How to get track change data

• By NeoTechni
• Sep 7, 2014

ie: If you want to make a music control widget

First you need to add a broadcast listener to the manifest

AddReceiverText(thenameofyourservice,
<intent-filter>
<action...

Click to expand...

 

Click to expand...

Otsu Thresholding - binarization of images

• By Johan Schoeman
• Sep 3, 2014

This project demonstrates grayscaling of a multi colored image and then the binarization (i.e black or white pixels only) of the grayscaled image. The binarization is based on Otsu Thresholding as...

 

Attachments

• JHS_OTSU_V2.zip

  61.2 KB · Views: 1,153

Last edited: Aug 16, 2015

Click to expand...

Image - Dithering 8 bit Grayscale images

• By Johan Schoeman
• Sep 2, 2014

This project demonstrates dithering of 8 bit grayscale images as explained at www.fiji.sc/Dithering. Methods included are the following:

Floyd-Steinberg
Atkinson
Jarvis-Judice-Ninke
Stucki...

 

Attachments

• JHS_DITHERING_V4.zip

  41.5 KB · Views: 965

Last edited: Aug 16, 2015

Click to expand...

Image - 17 different ways of Converting RGB Images to Grayscale

• By Johan Schoeman
• Aug 31, 2014

This project demonstrates the conversion of RGB images to various options of Grayscale images. It is based on the tutorial at http://www.tannerhelland.com/3643/

Click on any one of the...

 

Attachments

• JHSGRAYSCALE_V2.zip

  455.9 KB · Views: 1,484

Last edited: Aug 16, 2015

Click to expand...

Image - Enhancing Image Contrast by means of Histogram Equalization and Histogram Stretching

• By Johan Schoeman
• Aug 30, 2014

This project demonstrates contrast enhancement of low contrast Grayscale images based on Histogram Equalization as explained at...

 

Attachments

• JHS_HIST_EQUAL_V2.zip

  482.8 KB · Views: 1,302
• JHS_HIST_STRETCH.zip

  482.6 KB · Views: 1,179

Last edited: Aug 16, 2015

Click to expand...

App to log GPS information, display map and send by eMail

• By jsanchezc
• Feb 8, 2014

Hello,
This app is a sample to get GPS info, save into file, load list of tracks, show in map,
assign a photo and send map and log info in CSV format by email.
Also there is some code about saving...

 

Attachments

• GPSlogSample .zip

  249 KB · Views: 2,055

Click to expand...

Lets play with vertical lables!

• By IanMc
• Jul 7, 2014

We'll do this using the Canvas object.

I'm just learning but pretending that I can teach it

Download the provided CanvasTest.zip and open it.

What I've done here is to create a panel and...

 

Attachments

• CanvasTest.zip

  7.5 KB · Views: 762

Click to expand...

Samsung Galaxy Nexus layout

• By Erel
• Dec 19, 2011

I have a new toy

The attached AbstractLayout.txt file includes the layouts of the Samsung Galaxy Nexus, the first Android 4.0 device.
You should copy it to Basic4android installation folder...

 

Attachments

• AbstractLayouts.txt

  773 bytes · Views: 1,082

Click to expand...

Graphics ListView with 2 images, two labels and populated from a text file.

• By anallie0
• May 19, 2014

I wanted to provide this simple code for beginners like me.
The code is derived from the one written by the my teacher Klaus here.

This ListView is made with a ScrollView inside of which is...

 

Attachments

• list viewex.zip

  109.6 KB · Views: 1,197
• Screenshot_2014-05-19-22-05.png

  164.8 KB · Views: 1,161

Last edited: May 19, 2014

Click to expand...