Android应用中的路线API实时跟踪

Question

I am trying to use google maps directions API with continuous hitting to the API and updating the directions by getting a current location on location changed listener and it works perfectly.

But Instead of hitting multiple times I need to get directions API for the single instance and write an algorithm by getting the directions using segments start point and update on google map, Find a way to know the user is traveling in the wrong distance and re-route map by calling API.I tried these ways and working but there are a lot of cases to be handled for these scenarios.

I don't understand what to follow and why this is required is, we have a display cycle and the user starts the navigation and directions should be shown on cycle hardware display via BLE.

Please help me solving this issue.

Answer 1

You can try using the Google Maps Util Library . The PolyUtils class has methods to check if a LatLng lies on a polygon/polyline.

Maybe try using the method isLocationOnPath . And if it's outside the polyline, make the request to directions API and re-plot the route.

Docs: http://googlemaps.github.io/android-maps-utils/javadoc/