Tutorials & Examples

Important for Huawei users (or others):

Make sure your energy settings don't pause your app (even the firebase service). Huawei calls it "protected apps". If your app isn't protected...

 

Hi all.

This example shows the images contained in a certain directory, with pinch zoom and smooth scroll -when image is zoomed- capabilities (provided by JSTouchImageView library, from...

 

I made for beginer detailed description of how to prepare a computer and phone to create mobile applications on the platform Android. I myself Russian therefore made the instruction in Russian and...

 

I'm currently developing an App that'll be released for Android and IOS. It presents "files" to the user, allows them to select a file and then presents the content for editing, and finally allows...

 

Update (2017/10/17): For code changes that make this a true B4X update, see post #4

This relates to the FTP Server code posted here...

 

Update: Code to reconnect added


I've bought a BT handheld scanner on Ebay for about 45€ like this:


It comes with a sheet with barcodes which can be scanned to do some...

 

A new more powerful framework is now available: Remote Database Connector.

This tutorial is a follow up to the previous tutorial that explained how to connect to a MySQL...

 

A code module to automatically generate SetLayout statements with percentage values.

It is more convenient to use than my example:
Create your layouts based on percentages...

 

If you are using B4A v5.80+ then please follow this tutorial: https://www.b4x.com/android/forum/threads/google-maps.63930/#post-404386

GoogleMaps library requires v2.50 or above...

 

Edit: Things have changed with newer versions of Android and new restrictions. Sticky services should not be used any more.

Background service example...

 

B4A-Interpreter

I've made a B4A interpreter that runs B4A-Code on Android
to write easy B4A-test programs on my Phone.
To make an app only copy the source code back to the...

 

This is just a simple example (and yes, there are others doing similar). You can modify this example it by using other colors, gradients, adding other views and so on to have a simple but good...

 

Firebase has several extremely useful free server-based features for developers of mobile apps.

Spoiler: free?

The free "Spark Plan" is suitable for small business applications.​

...

 

Hi everybody!
I want to share this simple example of an HorizontalScrollView that works like ViewPager. Main difference between this and ViewPager is that HorizzontalScrollview has an only inner...

 

New version: GooglePlayBilling - In App Purchases

Spoiler: Old version. Not relevant

This tutorial covers the new API for in-app billing provided by Google.

The main differences between v3 and the previous...

 

I'm mostly using B4A-Bridge to connect the IDE to the Android devices. The built-in video recording feature doesn't work with B4A-Bridge.

I found a good alternative...

 

How to set Airplane mode ON e OFF?

I see this:
anddev.org • View topic - How to set airplane mode on/off

How I can traduce it, with B4A?

 

The ScrollView is a very useful container which allows you to show many other views on a small screen.
The ScrollView holds an inner panel view which actually contains the other views.
The user...

 

I'm working in a project that needs OCR offline. Made a small progress and decided to share here and get some feedback.
I've searched a little bit at this forum and google about it. Found options...

 

This starts recording video with your dji app

'put this in process globals

   Dim AircraftInstance As JavaObject
  

    Dim CameraInstance As JavaObject


'Put this in AfterAircraftConnected...