Tutorials & Examples

A common task we face while enhancing our apps is the need to update the structure of a running DB.
This is relatively easy if you know for sure that your users will all go from version 1 to...

 

A new more powerful framework is now available: jRDC2.

This tutorial explains the basic concepts required for creating a connection between Android device and a remote server. In this...

 

Tested with both B4A and B4J - see https://www.b4x.com/android/forum/t...smart-power-plugs-b4x-home-automation.125768/

 

The SMB library allows you to access Microsoft Windows Network file system.
You can read more information about this protocol here: Server Message Block - Wikipedia, the free encyclopedia...

 

Roughly speaking, Mastodon is an open source, distributed, social network a bit similar to Twitter:

Mastodon - Decentralized social media

Learn more about Mastodon, the radically different, free and open-source decentralized social media platform.

joinmastodon.org

Pleroma is a lightweight implementation of Mastodon with some...

 

 

A simple, B4A + B4i, example based on:
B4A: https://www.b4x.com/android/forum/t...-messages-firebase-cloud-messaging-fcm.67716/
B4i...

 

Part 1

1- Intent is exactly a Specific Message between Android Apps.
Building this message is simple in B4A:

dim intent1 as intent

2- Any message (ie: intent) has a specific purpose...

 

It incorporates this Github project via inline java code. The project reports a whole lot of information about your device and write the results to the B4A log:

** Activity (main)...

 

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...

 

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)...

 

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...

 

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

 

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...

 

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....

 

This tutorial is relevant for B4A and B4J.
During compilation B4A generates Java code which is then compiled with the Java compiler and converted to Dalvik (Android byte code format).
There...

 

Better implementation based on B4XPages:

[B4XPages] Bluetooth Chat Example

Updated implementation, based on B4XPages of https://www.b4x.com/android/forum/threads/android-bluetooth-bluetoothadmin-tutorial.14768/#content. The code is much simpler compared to the previous example. Note that you can call Serial.Listen without making the device discoverable. This is useful...

www.b4x.com

Tutorial was rewritten in April 2018.
We will create...

 

B4XImageView is a new custom view, added to XUI Views v2.40.

It adds several useful resize modes to the standard ImageView:

(Images source...