How to get directions on the iPhone or iPad

问题

Hi I would like to in my application display something like: you're destination is 400 ft north west.

I currently use the getDistanceFrom method but that only gives me the feet between 2 locations.

Thanks for your help.

回答1:

You probably should simply use Latitude Longitude equations to calculate the bearing and then set certain ranges of bearings to be SW,S,SE, etc.

http://www.movable-type.co.uk/scripts/latlong.html

来源：https://stackoverflow.com/questions/2630789/how-to-get-directions-on-the-iphone-or-ipad