how can i get distance bettween two place?

hello i want distance between two place ... means i have开发者_如何学JAVA two places latitude and longitude then i want distance between that two place

i want something like this...

http://maps.google.com/maps?saddr=23.029772,72.527871&daddr=23.1901748,72.0127743

not like php or .net or java function that give calculate distance ...

if i search result by function it give me 55.61 output for this latitude and logitude and in map it give me 65.5 output. how can i get this in json ot xml or any other formate ?

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...there's an in-built function in iOS that will do this for you. Check out the CLLocation documentation. Particularly distanceFromLocation:, which as the name suggests returns the difference between two locations in meters. You can create a CLLocation object using lat and lon.

If you don't want a straight line distance, you need to use the Google Directions API, which is well documented here: http://code.google.com/apis/maps/documentation/directions/