Android 3.1 and above devices support Usb host mode. With this feature you can connect to regular client usb devices. Some devices are automatically recognized by the OS and are simple to work...
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...
Using the NFC library you can read NFC tags formatted in NDEF form (NFC Data Exchange Format).
You can read more information about the internal process here: NFC Basics | Android Developers...
Camera2 library is based on the Camera2 API introduced in Android 5 (API 21).
It is designed to work together with CamEx2 class.
It is supported by B4A v7.3+. The library will be included as...
A large button is displayed. When the user presses on the button, the user is asked to say something.
The voice recognition engine converts the audio to text.
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...
By default, when there is an uncaught exception the program will show a message box with the error title and the user will be asked whether they want to continue or not.
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