Tutorials & Examples

The Excel library is a new library that wraps the open source jexcel project and allows you to read or write Excel workbooks. This library supports XLS files. The new xml based format (xslx) is...

 

Seeing the new Template feature, I thought I'd use it for the new libraries I create.
I created a Template that opens three folders (B4J, B4A, B4I) with the library.

In addition to...

 

In case anyone is interested I attach a modified version of Erels' ThreePagesExample for B4A only. It demonstrates the following enhancements.

1) B4XMainPage requests a Runtime permission.

2)...

 

Today for the first time, I started messing with B4XPages and Firebase. Even though I had already watched B4XPages, I hadn't fumbled to understand better.
The hardest thing was Firebase...

 

https://www.zdnet.com/article/googl...001503c2c&utm_campaign=trueAnthem:+Trendin...

 

Sharing code between the platforms is quite simple with the reference modules feature: https://www.b4x.com/android/forum/threads/b4x-modules-files-groups-and-folders.86587/#content
Once you...

 

I have created an app to read and write to BLE devices. This is an extension of BLE_Examples.

In this example the scan lists all devices found. You connect to a device by selecting it in the...

 

Now I have started a very big project and I came to the problem how to set and get more parameters.
Yesterday I spent the whole day looking for a solution on the forum how to set and get more than...

 

addJavascriptInterface [WebViewExtras] CallSub [B4XPages] Example

I created a Example (after search and not found)

send data: from WebView to B4X / from B4X to WebView ,
using addJavascriptInterface and...

 

Have combined Expandable List Based on CustomListView and Intent Based Camera to create attached project. The plan is to use this for auditing purposes. Once I am done with...

 

First, someone post nice simple demo for bluetooth printing(BTPrint.zip) but unfortunately I can't find this again for giving credits, but who ever is , thanks.
Now, here is also demo based on...

 

@Pendrush recently introduced its wrap of the In-App Review Library.
After a rework, the solution now works great...

 

This is an UltimateListView example that I made with a help of @Informatix and your library:
https://www.b4x.com/android/forum/threads/lib-chargeable-ultimatelistview.22736/

It...

 

Hi, am happy to share this project of mine.
What it does is, it accepts normal YouTube link and gets its direct download link from this website https://bitdownloader.com.
The direct download...

 

this might be far from perfect, but it works well for me. This little routine replaces useful html tags to bb tags, and gets rid of unwanted html tags in fetched wikipedia api texts.

Sub...

 

Hello,
First of all, sorry for my bad english... I'll try to do my best...

For my project, I ported the source of B4XSerializator of @Erel from here to php.
Even if php is considered...

 

This is a new feature. It is included in B4J v8.50 and B4i v6.80 (betas) and will be included in the next versions of B4A and B4R.

This is a very simple and useful feature. When you...

 

Introduction

I've been developing mobile application for over 25 years (Telxon, Symbol, Windows Mobile, Xamarin, CF.net). Up until now the barcode scanners were integrated into the mobile...

 

Here is the example of SlowMo video capture using Camera2 API and CamEX2 class. This is the code for recording slow-motion video which you can find at the bottom of CamEX2 Class of attached...

 

After reading so many threads from new 'member' s , I feel that we have to make humble request to all new members :

Do not start a B4A project before you read the guides....