Accessing files on pc from android

I'm new at android developing and wanted to make a little tool.

I would need to give my tool a path, like C:开发者_运维百科//my/path

Then my app goes to that path and does something like copying some file on the phone, checking its mime type, its size, some other attributes.

Is this possible?

I don't want a Windows Explorer-like app or something like that. I just need to do some simple file manipulations.

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Neither your device nor your emulator can access files on your PC via USB. You are welcome to implement this using WiFi, or perhaps Bluetooth, but this will be far from "a little tool".