Anytime I do a hot restart on my flutter app after the port has been initialized, I get this error:

Unhandled Exception: SerialPortError: Device or resource busy, errno = 16

Basically my app runs through this initialization process during every hot restart:

1. Close/Dispose the port if it already exists
2. Create new SerialPort instance
3. OpenReadWrite
4. Set Baud Rate
5. Create new SerialPortReader instance
6. Listen to data

I get this error at step 3 after a hot restart.

My guess is that the port is not disposed correctly and when a new port gets opened for read/write the OS throws this error because the old port still exists in memory.

This is on Android 7.1 btw.

Any suggestions on how to solve this?

Thanks