This is my code objective: I want an android application to start to trigger connecting to server and sending the latitude and longitude only when the phone (being used in a car) is within a road area ( say an area 1km x 30m ). It is continuously listening to its location but will start sending to server once it enters the area and will continuously send and will stop only once it exit the area.
A good answer i received for this: "create two location, a NorthWest location and a SouthEast location that represent your box. In your onLocationChanged method, compare the new location with the corners, such that (l.lat > se.lat && l.lat < nw.lat) and (l.lon < se.lon && l.lon > nw.lon) where "l" is the newest location from the callback, "se" is the south east corner of your boundary and "nw" is the north west corner of your bounder. If it meets the 4 above conditions, then you send to your server" I think this is applicable when a pair of the sides of the rectangular area are parallel to the latitude(equator) and the other pair of the sides parallel to the longitude lines (meridian). What if the rectangular area's sides are not parallel to the latitude and longitude lines . How can I meet my objective? Proximity alert will form a circle. Should a mathematical formula do it sir? -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
