android - Set a random Geofence location 2km away based off a users current location -


i'm using using google-play-services-location track location of user.

when user clicks button start challenge , user need go random location within 2km of current longitude , latitude (computed randomly application logic).

geofencing location determine if arrived.

is possible set geofence in way, , how go attempting it?

first

1 degree of longitude = 111km

1 degree of latitude = 111km

so 2km both longitude , latitude equal .018 degrees

second

you users location longitude , latitude add random longitude , latitude equal .018.

for example: add longitude of .007 , latitude of .011 (which equals .018) users location. give location 2km away user.

if want closest part of fence 2km away double degree total .036 , make fence radius 2km.

lastly

to geofence similar above 4 times give square fence. or once give radius. distance upto how big want fence be


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