I'm currently creating an application that aims to automatically move a file between the folder of a USB device and an internal folder.
I have the code that moves the files between two folders working on an emulator, however I cannot configure the code to work on a live machine as when I connect my device to Android Studio the Device File Explorer fails to display the USB device.
I have the USB device connected to my Android Device and my Android Device is connected to Android Studio over Wi-Fi.
(I am aware that interaction with files on a USB device will void my app from ever getting on the app store, this is purely a non-commercial, internal app)