Android Question USB Connection Always Null

[Richard Goh]

I connected my usb to computer or mobile printer. Then I use the USB, USBSerial sample programs to test but it's not able to detect any connected devices. The USBManager always return blank and no USBDevices() returned. Any advice?

 

[Erel]

USBManager will only return USB devices that are recognized by the OS. You can use two USB two serial converters to connect an Android to a PC.