Tutorials & Examples

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...

 

followed_mission for dji phantom 3 standard DJIV2.5 library

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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...

 

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

 

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...

 

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

Example:

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

Sub Sum(a...

 

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...

 

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...

 

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...

 

Ciao a tutti, ho creato un corso in italiano su piattaforma B4A per creare una app con un sito web, il corso è per principianti e guida l'utente dal download e l'impostazione di B4A, del JDK e...