QML or QT widget app to communicate with a arduino (android)

[mellester]

I am trying for a while now to find ways to communicate with a arduino using qt.
I am looking for a piece of documentations that explains how i can use the QAndroidJniEnvironment or QAndroidJniObject for example to make a interface with a arduino.

I am trying to integrate this library in a simple QT app
"usb-serial-for-android":https://github.com/mik3y/usb-serial-for-android/releases
How can i access its methods in a QT app/QML
But i cant seems to be able to use its methods.
Are there any links that can help.