Tutorials & Examples

How do you make changes to the basic layout (design) of a program? I opened the following sample file: DataBaseProgSample1.5.b4a I wanted to change the sizes of the edit fields, but when I...

 

Step 1: On your mobile device, make sure you have USB Debugging activated.

Spoiler: How do I do it?

- Go to "Settings".
- Scroll down to the bottom and tap "About phone" or "About tablet",
- Scroll down to the...

 

The attached project is a "short cut" that will enable you to create Progress Indicators for your projects. It makes use of GIF files to simulate the progress indicators. The B4A...

 

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...

 

Hello World!

Extra Samples of ARV will be posted here from now on

Samples :

• Google Play
• Youtube
• ScalingParallax...

 

Hi!

Since I've been messing around with trigonometry this week, I decided to give you guys an analog clock example. Enjoy!

#Region  Project Attributes
    #ApplicationLabel: Analog Clock...

 

It wraps a tiny bit of this - just enough to show the clock. Thought it looked quite nifty...Have done nothing special to it other than painting the hands and the face a bit... Lib...

 

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...

 

Hi to all,

I´m not sure if this information is useful...
I was not satisfied with the emulator and started looking for something different.
At Redirection you can find readymade images...

 

I recently ran into some issues after an update to my Galaxy S3 and after seeing a related post, I decided to write this quick tutorial. I didn't see information on this elsewhere in the forum...

 

Android 5.0 Lollipop is a pretty big update hence the major version number upgrade.
I wanted to make a thread to combine Android 5 SDK related resources since it is such a big update.
At the...

 

This is a "bare" arkanoid game:

The code is made of 4 modules:
Main - main activity. Also holds the main timer that is running the...

 

Better example is available here: https://www.b4x.com/android/forum/threads/mjpeg-cctv-server.73792/

This example is made of two components:

Client - Basic4android program that takes...

 

Android Beam is a feature introduced in Android 4 that allows one device to transfer a message to another device by placing the devices back to back. The communication is based on NFC.

The main...

 

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...

 

The purpose of this framework is to allow you to easily add different types of charts to your projects.
The current version supports pie charts, line charts and bar charts.

The framework is...

 

Really don't know where to post this. Thought this may be a good place.

Anyway, I found this Android Compatibility Definition Guide in pdf-format which could be handy. Of course, you can find...

 

SQLCipher is an open source project that extends SQLite and adds full database encryption.
License: https://www.zetetic.net/sqlcipher/open-source/

B4A SQLCipher is a special subtype...

 

Android 4.2 includes a new powerful screen saver feature named Daydream.

A "dream" starts when the device is docked or charged and the screen timeouts. By default dreams are non-interactive...

 

This is an old tutorial. It will not work on new versions of Android. You should either generate a random value when the app starts for the first time or use the advertising id...