MapKit-如何使用MapKit在我的iPhone应用程序中实现从源和目标的指示？

Question

How can i get the shortest distance from source A to Destination B using the MapKit in iphone. Is there any way to implement this? Thank you.

Answer 1

Assuming that you are looking for routing, you need to fetch the routes from a routing server. Check Google directions API. CloudMade also has routing api. I don't think MapKit provides a way to fetch routes and find shortest distance.

If you are looking for straight line distance use:

CLLocation *aLocation = …
CLLocation *differentLocation = …
[aLocation distanceFromLocation:differentLocation];

Answer 2

For route mapping, I'm pretty sure the best option is still to fire up the maps application appropriately parameterised....

Try here http://mobile.tutsplus.com/tutorials/iphone/iphone-sdk-quick-tip-launching-maps-in-app/

Thanks