Represents the current state of the AR system.
public enum ARSessionState
The system is checking for the availability of AR.
AR software is being installed.
AR is supported, but requires an additional install.
The AR system has not been initialized. Availability is unknown.
AR is supported and ready.
An AR session is initializing (i.e., starting up). This usually means AR is working but has not yet gathered enough information about the environment.
An AR session is running and is tracking (i.e., the device is able to determine its position and orientation in the world).
AR is not supported on the current device.