Tutorials & Examples

This is a full working example of real time ObjectDetection (in this case, cars) using cascadeClassifiers, getting the input from a recorded video file, making use of Videocapture. The example was...

 

If you have modern processor from AMD (Ryzen) - x86-variants of AVD cannot work by default.
Android emulator now requires the processors with a virtualization only.

By default Intel processors...

 

============= MANIFEST =====================

AddManifestText(
<uses-sdk android:minSdkVersion="5" android:targetSdkVersion="19"/>
<supports-screens android:largeScreens="true"...

 

Hi,

On one of my projects, I had to transfer sensitive data from Android to PC but - with RC4 encription.
I wrote a little code that I want to share with you...
Maybe Android supports RC4...

 

Update 29/8/2018: i uploaded new version without FIREBASE to help who dont need

B4A is very good app to build Android app.
I want to use it built app same as Android Studio, so i make a...

 

Blockchain
A digital ledger in which transactions made in bitcoin
or another cryptocurrency are recorded chronologically and publicly.
In more general terms, it’s...

 

Hi,

If your Facebook and firebase configurations are all ok but the auth event is not raising or if you are getting An account already exists with the same email address but different...

 

This app save each image into a server via FTP
and if you want download all images to merge into a video

Esta App salva cada imagen en un servidor via FTP
y si lo deseas puedes bajar todas las...

 

Hi everyone,

there is a new way to create the localizator class csv file and it is as easy now as it could never be in the past. Just watch the following video:

(23-6-2019)

In order...

 

I finally have reliable, stable printing to a blue tooth printer (Citizen CMP-10 and CMP-20) from my Samsung 5570L Galaxy Mini Android Device running v2.3.6

Attached is a skeleton project...

 

A much improved version is available here.

You can use the code in this example to show data in tabular form.

The table is...

 

Hello, i see here, that many people have problems to install there wear app to his watches.
I list the steps that are needed so that you can quickly look up when you need it.

Phone:
-install the...

 

(Here is the iOS version)
This is how you can set HTML data to Label (works only in release mode),

Dependencies: StringUtils, jSoup, LabelExtras

Here is the code,

Dim...

 

Hi,

Last couple of days I have been testing compilation of B4A programs through Google Drive Filestream. Although it is a little bit slower it has a lot of advantages to do this:

- your OpenJDK...

 

B4A v4.30 includes a new tool named B4ABuilder.exe (and B4J includes a similar tool named B4JBuilder.exe).

This tool allows you to compile your projects from the command line. This can be useful...

 

Yes, you heard me right! It is possible to utilize the pointers and references (at least in terms of behavior) in B4X Java-based languages (B4A and B4J).

There is a lot to explain about...

 

Hi all.
Here is a simple example of how make a eyes folow the touch on a panel.

another example

a source is attached

 

Android Things is a new project of Google that extends the Android OS to SoC (System on a Chip) boards such as Raspberry Pi and Intel Edison.

https://developer.android.com/things/index.html...

 

More videos: https://www.b4x.com/etp.html

The example app is attached.
Note that the correct library that needs to be checked, except of B4XPreferencesDialog, is XUI Views...

 

New CLVHeader class replaces this implementation: https://www.b4x.com/android/forum/t...ce-animated-header-to-xcustomlistview.105343/

...