Walking Directions iPhone App

I was given the task to write an iPhone app that gives walking direction开发者_运维知识库s. I own an Android and I know this is possible within Google Maps and Google Navigation. I am fairly new to MapKit and Google Maps API and it is unclear from what I've Googled if Apple and/or Google support this feature via an API. Can somebody please share some light on this subject?

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The easiest way I know of is to call a URL from you app, which will be handled by the iPhone's Maps application. It accepts the parameters saddr and daddr. You can use the keyword "Current+Location" to use the user's current loc as a parameter:

http://maps.google.com/maps?daddr=San+Francisco,+CA&saddr=cupertino

Have a look at the Apple Docs on the subject for more info. Hope this helps =)