Tutorials & Examples

TabHost tutorial

• By Erel
• Dec 1, 2010

It is recommended to use TabStripViewPager for new projects: https://www.b4x.com/android/forum/threads/63975/#content


The TabHost view is a very important view. It allows you to add...

 

Last edited: May 10, 2019

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Android shake event with PhoneSensors

• By Erel
• Jun 23, 2011

Using the phone accelerometer it is possible to handle shake events.
The problem is of course to decide if the stream of values represents a shake.

The Shake code module finds shake patterns and...

 

Attachments

• Shake.zip

  27.9 KB · Views: 3,777

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followed mission for dji phantom 3 standard & DJIV2.5 library

• By Mr Blue Sky
• May 3, 2018

followed_mission for dji phantom 3 standard DJIV2.5 library

 

Attachments

• followed_mission.zip

  90.3 KB · Views: 528
• DJIV2.5.zip

  82.8 KB · Views: 505

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HttpUtils2/PHP: GET vs POST methods

• By KMatle
• Mar 11, 2016

Of course there is more about to secure data transmissions between clients & servers. Please take this tutorial to think about to secure your communication as good as you can.


With...

 

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Intent Filters - Intercepting SMS messages in the background

• By Erel
• Aug 2, 2012

Old tutorial. Don't use services. Use receivers.
Broadcast receivers are program components that can handle broadcasted messages. These messages usually notify about a system event.

There...

 

Last edited: Jan 13, 2023

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FirebaseAdMob - Rewarded video ads

• By Erel
• Sep 27, 2016

Edit: Google AdMob does support rewarded ads without mediation.
You can use this unit id to test it: rewardAd.LoadAd("ca-app-pub-3940256099942544/5224354917")
Make sure to use FirebaseAdMob...

 

Last edited: May 31, 2018

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Java 10 - B4A SDK Manager fix

• By NJDude
• Apr 19, 2018

As stated on THIS thread, the current SDK Manager (3.20) will display an error, to fix it, you will have to recompile it using the source code posted HERE and modify line 158

From...

 

Last edited: Apr 19, 2018

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Inputlist with images

• By ilan
• Apr 13, 2018

hi

for one of my project, i needed an input list that includes images and i was thinking of using clv for that, but i really wanted to use the native input list so with CSBuilder it is very...

 

Attachments

• InputListImage.zip

  15.1 KB · Views: 1,167

Last edited: Apr 13, 2018

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Wrapping Kotlin code and libraries for B4A

• By moster67
• Apr 4, 2018

In this thread, I am publishing a series of 3 videos to show you how you can wrap Kotlin code and libraries to be used within your B4A-projects.

In order to really appreciate the content, you...

 

Last edited: Apr 16, 2018

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[B4X] [XUI] Creating custom views with XUI

• By Erel
• Oct 17, 2017

Start with this tutorial if you are not familiar with custom views: [B4X] Custom Views with Enhanced Designer Support

With the help of XUI it is quite simple to create custom views classes...

 

Attachments

• ClockView.bas

  1.4 KB · Views: 1,518

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[B4X] Database modelling

• By KMatle
• Apr 4, 2018

This tutorial is about db modelling with a small example. Of course this is just an overwiew and there is much more. I assume you know how to create tables and Co.

Databases

A db is a...

 

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Retrieve one or multiple image(s) shared to your app

• By KMatle
• Apr 7, 2018

With this code you can retrieve images shared to your app (e.g. if a user selects one or more images from the gallery and selects "Share..."). No permissions are required as the user selects the...

 

Last edited: Apr 8, 2018

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Convert Integer to DIP

• By JonPM
• Jun 19, 2012

Saw a request for this so I thought I'd share. Below you will find a way of converting an integer to a DIP (Density Independent Pixel). This may be useful in situations where you have a variable...

 

Last edited by a moderator: Jul 9, 2020

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Custom Expandable ListView

• By thedesolatesoul
• Mar 15, 2012

This code is an example of creating an expandable listview using a scrollview.
The layout of each item in the list is created in code and is customizable on a per item basis.
The example is...

 

Attachments

• expandablelv.png

  8.5 KB · Views: 21,671
• ExpandableListView.zip

  10.3 KB · Views: 5,426

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Android SQLite Viewer

• By Erel
• May 17, 2011

SQLite Viewer is an open source application that allows you to view the contents of SQLite databases right from your Android device...

 

Attachments

• SQLiteViewer.zip

  15.1 KB · Views: 3,497

Last edited: Mar 18, 2018

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In-App billing Server side verification

• By Emme Developer
• Mar 27, 2018

Hi to all! I want to post a small example to verify the signature of an in-app purchase, in order to avoid the use of application like Freedom and Lucky Patcher.
An important note is that this...

 

Last edited: Mar 27, 2018

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[B4X] Resumable subs that return values (ResumableSub)

• By Erel
• Aug 10, 2017

Remember that that a call to Sleep or Wait For in a resumable sub causes the code flow to return to the parent.

Example:

B4X:

Sub Button1_Click
Sum(1, 2)
Log("after sum")
End Sub

Sub Sum(a...

 

Last edited: Aug 25, 2020

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Android "Kiosk mode" tutorial

• By Erel
• Aug 15, 2011

Edit: A better kiosk implementation is available: https://www.b4x.com/android/forum/threads/device-owner-tasklock-kiosk-apps-2017.81765/#post-518018

Kiosk mode applications are...

 

Attachments

• Kiosk.zip

  6.7 KB · Views: 6,328

Last edited: Jul 18, 2017

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3D Interactive Starfield using only the Core library

• By wonder
• Dec 31, 2014

Hey guys!!

I took this HTML5 example and adapted it to B4A.

I hope the code is self-explanatory, if not, I'll be here to help.
Once again I'm using panels, but you can use whatever...

 

Attachments

• Starfield Example.zip

  7.7 KB · Views: 949

Last edited: Dec 31, 2014

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B4A bridge & B4A designer: Create a WIFI Spot with your computer.

• By Yayou49
• Mar 21, 2018

Hello,

I was facing a problem to use B4A bridge because I'm connected to a LAN without WIFI.
I found a solution to make my computer a WIFI spot and then use B4A bridge & B4A designer Wireless...

 

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