I have used Google geo address and using lat/long have got the address. How do I determine if I am on road on not? Basically hit-test for road? I am currently using location manager for lat/long and the GeoAddress is same for on road and next to road.
Use reverse geocoding via the Google Geocoding API.
The term geocoding generally refers to translating a human-readable address into a location on a map. The process of doing the converse, translating a location on the map into a human-readable address, is known as reverse geocoding.
The Geocoding API supports reverse geocoding directly using the latlng parameter. For example, the following query contains the latitude/longitude value for a location in Brooklyn:
http://maps.googleapis.com/maps/api/geocode/json?latlng=40.714224,-73.961452&sensor=true_or_false
The docs explain how to interpret the json results but StackOverflow has various answers addressing more efficient ways to parse the data.
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Getting the nearest street/road coordinates in android - the answer to this question may point you in the right direction.
You can use directions api directly: http://maps.googleapis.com/maps/api/directions/json?origin=51,19&destination=51,19&sensor=false
Could you use the API to find directions which would then provide the closest road?
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See fiddle.
It can be done so much easier with OSRM (nearest) webservice. Make a GET request like:
const url = '//router.project-osrm.org/nearest/v1/driving/';
fetch(url + coord.lon + ',' + coord.lat).then(function(response) {
return response.json();
}).then(function(json) {
if (json.code === 'Ok') {
console.info(json.waypoints[0].location);
}
});
Which is a road/street coordinate.
References — Project-OSRM
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