B4J Tutorials

Compile non-ui, but don't run it yet

• By Dan Haugland
• Apr 29, 2016

Building a headless app that I will wrap into an exe and run as a service, all is well compiling in debug mode, but when switching to release I want to compile to .jar but NOT run it. Workaround...

 

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[ABMaterial] new component ABMTimeLine 1.09

• By alwaysbusy
• Apr 27, 2016

ABMTimeline is a component to present a time line of events. Using the ABMTimeLineElement you can create events, with some assets like images.

Update: Ignore this, I've found a more recent...

 

Last edited: Apr 28, 2016

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[ABMaterial] Inline table editing

• By alwaysbusy
• Apr 26, 2016

I've had some questions about inline editing of tables in ABMaterial. There is one way to do this, however it has its limitations and will only work in certain cases. It only works for 'String'...

 

Last edited: Apr 26, 2016

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Creating push-enabled android-apps on blackberry

• By schimanski
• Feb 12, 2016

I would like to share my experience with creating push-enabled android-apps for blackberry-devices. Many thanks to Erel, who supports my efforts decisively.

I have tried a lot of things to enable...

 

Attachments

• BlackberryPushServercode.zip

  4.5 KB · Views: 550

Last edited: Feb 12, 2016

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[IoT] Configure Raspberry without keyboard/WiFi at the start

• By KMatle
• Apr 16, 2016

It's not directly related to B4J but I find it very useful for new RaspBerry owners.

Just installed my 3rd RaspBerry. The ones I have are controlled via Putty (remote) so no keyboard is needed...

 

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[IoT] Raspberry: Use a IDE/SATA hd/ssd

• By KMatle
• Apr 14, 2016

Using a Raspberry to handle a lot of data will definetly corrupt/destroy the SD card after a while (e.g. if you use it as a webserver). SD cards are slow (in comparison to a hd or sdd). The best...

 

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Dump/zip/FTP-Upload a MySQL-DB

• By KMatle
• Apr 2, 2016

I use some Windows *.bat files to do backups, etc. Some things are quite difficult or crap to do (like error handling, messaging, etc.) so I decided to convert one of my scripts to a non-ui B4J...

 

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[Server] Screen Capture & FTP

• By AzureCrystal
• Mar 29, 2016

This code is based on Erel's Screen Capture tutorial - https://www.b4x.com/android/forum/threads/server-screen-capture-server.37292/#content

Using the jAWTRobot lib for a simple screen...

 

Last edited: Mar 30, 2016

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[Server] Screen capture server

• By Erel
• Jan 30, 2014

This is a simple server that takes a screenshot of the current desktop screen and returns the image as the response.

For example if you call it from the device browser:



The handler...

 

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[ABMaterial] One Page, Many Uses

• By Harris
• Dec 31, 2015

This example uses one ABM page to handle all tables listed under "Configure App".
In an effort to reduce code size (and maintenance), number of pages and duplicate methods, I am...

 

Last edited: Dec 31, 2015

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[WebApp] Minimum Spanning Tree

• By Erel
• Mar 20, 2016

I took Ilan's challenge and implemented a minimum spanning tree algorithm.

You can see the solution online: https://b4x.com:51041/mst/index.html

The algorithm used is Prim's...

 

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[IoT] Linux Embedded Boards - Gettings started

• By Erel
• Nov 16, 2015

There are many Linux based, embedded boards available. Most or all of them support Java which means that they also support B4J.

In order to start development we need to install Java JRE 7+ (JDK...

 

Last edited: Nov 22, 2015

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[ABMaterial] New component ABMPDFViewer in 1.08

• By alwaysbusy
• Mar 2, 2016

A new component for ABMaterial in the next version (1.08): ABMPDFViewer. It allows viewing, printing, downloading, localizing, a side view to show pages and more.

Completely materialized...

 

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[ABMaterial] Animating about anything

• By alwaysbusy
• Feb 23, 2016

I'm finalizing version 1.07, and one of the new things you will be able to do is animate ABMContainers (and ergo all its child components. Here is a demo animating a slide in/slide out of a...

 

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[ABMaterial] Using Google Analytics in 1.07

• By alwaysbusy
• Feb 17, 2016

I've put a new tutorial post on my blog on how to use Google Analytics in the upcoming new version of...

 

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Install Bluetooth on Raspberry Pi with Raspbian Jessie

• By Mark Read
• Feb 13, 2016

I have no idea where to post this, so please excuse if this is not the right place.

The installation of a bluetooth dongle on the new Raspbian Jessie is apparently different.

Common to...

 

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[ABMaterial] Infinite scrolling pages with 1.07

• By alwaysbusy
• Feb 8, 2016

A new feature in v1.07 will be Infinite Scrolling Pages (like twitter, facebook, etc). It's going to be super simple to make

Demo video:

The code:...

 

Last edited: Feb 8, 2016

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[Server] Table report with Export feature

• By Erel
• Mar 23, 2014

Online example: http://basic4ppc.com:51042/reports/index.html

In this example we are using a JQuery open...

 

Attachments

• TableExample.zip

  5.7 KB · Views: 1,381

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[RPi] - PiFace Control And Display (CAD)

• By Erel
• Jan 21, 2016

jPi4J library supports the PiFace Digital extension. However it doesn't support the CAD module as the...

 

Attachments

• PiFace_CAD.zip

  1.7 KB · Views: 925

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Basic ListView Scrolling?

• By LWGShane
• Jan 20, 2016

Is there anyway to handle a ListView that has more items than can fit on-screen?

 

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