Guidebee Map API –Package Gis.Navigation

The location packages defines API which provide turn by turn navigation instruction, the core class is NavigationEngine, it internally includes three working thread

• Location monitor thread used to monitor current location against current navigation route if there’s one and adjust raw location to the nearest position on the route.
• Voice command generator generate thread create upcoming voice command based on current step and location and put them to the voice command queue.
• Voice command processor pick up the voice command from the queue and notify the voice command listenerHere’s state transition diagram of NavigationEngine:

Classes defined in this package

WayPoint	Define a navigation way point; it defines the name and Lat/Lng pair.
NavigationEngine	Navigation Engine, it internal has a navigation simulation thread ,it support turn by turn navigation , has on road and off road navigation mode, rerouting support etc.
SimulatedDirectionLocationProvider	Simulation location provider, it uses a MapDirection object as the simulation source.
VoiceCommandArg	Voice command argument class, which defines command type, command argument (which usually is the current road name)
VoiceCommandSpeaker	Default implementation for audio command player.
VoiceCommandType	Define all navigation command type, such as distance to a turn, turn left ,turn right etc.
WalkOnRoute	Current position on the route (nearest).
INavigationListener	Navigation listener, which monitor the status of the navigation engine, location update, rerouting status etc.
IVoiceCommandListener	Voice command listener.