Generate KML file on iPhone

Question

In my app I have to draw route between user location and destination location in MKMapView with help of MKAnnotation and MKOverlay classes. I had gone through the KMLViewer sample code from Apple in there they mentioned to create KML file outside the programming steps, but I need KML file generation inside iPhone app programming.

Is it possible? And I need help on doing that..

Steps to get KML file manually

The process to obtain a KML is as follows:

• Go to: "http://maps.google.com/"
• Click "Get Directions" link
• Type in the start and destination addresses (for example) Start = 451 University Avenue, Palo Alto, CA 94301 Destination = #1 Infinite Loop, Cupertino, CA 95014
• Modify the route as you wish.
• Click the "Link" to this page link.
• Copy the email/IM link.
• Paste the link back into your Safari's address bar.
• Add &output=kml to the end of the URL and press the enter key.
• The KML file will be downloaded to your Downloads folder.

but I need this to be done programmatically...

Answer 1

KML is just XML and there are various methods for generating XML files in Cocoa, e.g. using KissXML.

The KML format is documented here: http://code.google.com/apis/kml/documentation/kmlreference.html.