Tutorials & Examples

LibGDX Sensor Access

• By TheJinJ
• May 8, 2014

I'm currently messing about with libGDX and will be using the Accelerometer for input. I borrowed some code from the web and B4A'd it. It includes device rotation, orientation, resolution, X, Y, Z...

 

Attachments

• sensors.zip

  5.2 KB · Views: 939
• Screenshot_2014-05-08-20-00-15.png

  168.1 KB · Views: 836
• axis_device.png

  17.2 KB · Views: 826

Last edited: May 8, 2014

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Calculator - RPN Calculator

• By Johan Schoeman
• Sep 5, 2014

This is an attempt to create a RPN calculator (Reverse Polish Notation - as per HP calculators). You can store (STO) and recall (RCL) values of register X. It will store and retrieve last value of...

 

Attachments

• JHS_RPN_CALC_V2.zip

  387 KB · Views: 1,157
• JHS_RPN_CALC_V1.zip

  387 KB · Views: 1,000
• JHS_RPN_CALC_V3.zip

  389.6 KB · Views: 1,210

Last edited: Jul 8, 2015

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Windows 8 B4x File Change Tracking

• By Reviewnow
• Dec 3, 2014

Sometimes it is necessary to restore a previous version of your b4x projects/Project
you have made multiple changes but can not remember what was changed and you have to go back to a working...

 

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google map what intent

• By gapi
• May 14, 2012

Hi all, how can from button, show map location on google ? (without webview)

thanks

 

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Slide Panel

• By Humberto
• Dec 2, 2014

Here another Slid Panel.
I use the Ultimate List View ( paid from Informatix ) to swipe control, but someone can adapt the gesture library.

In the first time no image will appear in background...

 

Attachments

• SlidePanelHSP.zip

  17 KB · Views: 894
• screen_01.png

  165.3 KB · Views: 1,308
• screen_02.png

  172.4 KB · Views: 1,078
• screen_03.png

  100 KB · Views: 1,197

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Use localhost server

• By omidaghakhani1368
• Nov 30, 2014

Hi to all.
It's problem for us for access address http://localhost/your_project/script.php in Android Emulator.
if we enter http://localhost/your_project/ in emulator get error
Well...

 

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Action List module - Creating a custom view

• By Erel
• Jan 24, 2012

This is an old tutorial. More powerful custom views: [B4X] Custom Views with Enhanced Designer Support

The attached project contains a code module which you can use in your projects to...

 

Attachments

• ActionList.zip

  13 KB · Views: 2,260

Last edited: Aug 11, 2016

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B4LinuxInstall script to use B4X tools in linux

• By joseluis
• Sep 26, 2014

This is a Bash shell script that allows installing B4A, B4i & B4J in linux systems, along with their required dependencies.

Link to the main thread in the B4J sub-forum, please go there to...​

 

Last edited: Jan 18, 2015

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2-Step verification - Sending email through Gmail

• By Peter Simpson
• Nov 18, 2014

This isn't what I would call an actual tutorial, it's more like a very useful tip.

PLEASE NOTE: I'm not claiming that this is the only way to fix the issue, or even the correct way. But...

 

Last edited: Nov 18, 2014

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Android multitouch tutorial

• By Erel
• Jul 25, 2011

Using Agraham's Gestures library we can handle multitouch events.

This is an example of a simple drawing application that supports multitouch...

 

Attachments

• MultitouchExample.zip

  7.3 KB · Views: 1,423

Last edited: Aug 29, 2017

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QR Code - Reverse Engineering a QR Code

• By Johan Schoeman
• Aug 9, 2014

I am leaving this project here for now. The majority of the work has been done to extract the critical information of a QR code - it is reported in the text box to the right of the qr...

 

Attachments

• JHSQRCODEREADV4.zip

  19.7 KB · Views: 1,338
• qrcodev21ehm6.zip

  443.9 KB · Views: 1,376
• qrcodev4elm5.zip

  206 KB · Views: 1,278

Last edited: Jul 8, 2015

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Update a homescreen widget more frequently than 30 minutes

• By corwin42
• Sep 6, 2011

Normally a homescreen widget can only update itself every 30 minutes. A lower value is not possible in the ConfigureHomeWidget() call.

But what if you want to create something like a clock which...

 

Attachments

• AHClock.zip

  5.7 KB · Views: 2,112

Last edited: Sep 6, 2011

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Google Play: "Designed for tablet screens"

• By Informatix
• Oct 27, 2013

A change is coming up on November 21 on Google Play. The applications considered by Google as not designed for tablets will be marked as designed for phones and, by default, won't appear for...

 

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5 Card Poker Scoring

• By JakeBullet70
• Oct 1, 2013

Hi all.

Here is a BAS module to do 5 card poker scoring. Its some ugly code but it works.

I have promised myself I was going to re-write this code for over a year but cannot seem to find the...

 

Attachments

• cards.zip

  37.4 KB · Views: 1,116
• poker scoring v0.91.zip

  10.2 KB · Views: 792
• poker scoring v0.92.zip

  10.2 KB · Views: 899

Last edited: Dec 6, 2013

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