1. 

   tom21 Lurker

   Thread Starter

   Say i provide (x,y) latitude and longitude, and a radius of 500m.
   
   what i would like to achieve with the help of Google maps api is that when user is outside 500m of (x,y), i want to trigger action such as send email.
   
   How can i set radius in meter,kilometre?

    

   
   

   
   

   #1 tom21, Oct 6, 2014
1. 

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2. 

   IrvineCAGuy Lurker

   You will need to compute the distance taking into account the curvature of the earth. The formula is complex. A simplified method can be demonstrated at:
   
   http://www.geodatasource.com/developers/java
   or this
   Distance between two GPS coordinates (in meter) - Android Snippets
   
   Good luck.

    

   #2 IrvineCAGuy, Oct 8, 2014

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