Some databases have spatial functions, eg postgis.net - PostGIS for Postgres. That allows you to query for nearby locations, so serverside it could periodically look for other users near you.
I did some geocoding using just URL's / XML on Androind ( not Delphi ) a few years back and it just worked. It's not super accurate all the time, but if you get the Lat/Long it will return a fairly accurate address.
Would Google Play Services Nearby API help you here, saves you all the infrastructure - but might be too short ranged (100 ft/30 m) - works on Android and iOS. developers.google.com - Nearby | Google APIs for Android | Google Developers
ReplyDeleteSome databases have spatial functions, eg postgis.net - PostGIS for Postgres. That allows you to query for nearby locations, so serverside it could periodically look for other users near you.
ReplyDeleteThere are plenty of geo-coding sites out there, Google included. They ahev documentation here : developers.google.com - Getting Started | Google Maps Geocoding API | Google Developers
ReplyDeleteI did some geocoding using just URL's / XML on Androind ( not Delphi ) a few years back and it just worked. It's not super accurate all the time, but if you get the Lat/Long it will return a fairly accurate address.
Hope this hleps