I want to write my own Sync application for Android devices under Windows. Can you help me find the tools?

Question

Android

I want to write my own desktop sync manager for an Android device (in particular, for HTC One S). I see it as a Windows service that hangs in memory, on the event of connecting such a device (or similar to it), offers to manage it. If the user agrees, the service blocks the built-in manager from launching from the device and launches its own application as an application. It basically acts as a file manager for an Android device
. Ideally (I don't know if it's achievable), I'd like a cross-platform solution. Those. Java, Ruby etc. But Windows is a priority.
Help me understand what tools are needed for this. The most difficult seems to be interaction with the device.

Answer 1

It can do this:
your application hangs on the smart and waits for an incoming connection on some port, and on the computer, the service periodically scans the network for devices in this application. As soon as the device is found, we start authorization, after authorization we start the ftp / sftp / smb / etc server on the smart. Then you can do whatever you want with the data.