Download - Getting Oriented with MapKit: Everything you need to get started with the new mapping framework
Why Maps?
• iPhone is a mobile / pocket computer
• Where am I?
• What’s near me?
• How do I get somewhere?
Dark ages (pre 3.0)
• Static map images
• Web view with Javascript shenanigans
• Exit out to google maps
MapKit
• New in iPhone 3.x
• Embed map in your app
• Uses Google map tiles
• Familiar map UI
Important Classes
MKMapView
MKAnnotation (protocol)
MKAnnotationView
Important Classes
MKMapView
MKMapViewDelegate
MKAnnotation (protocol)
MKAnnotationView
MKPinAnnotationView
Simplest Example
• MKMapView ... just a view
• Don’t forget to add mapkit framework
• Or use Interface Builder
That was easy
Show User Location
Center
Latitude Span
Longitude Span
“best fit” not exactly what you set
Showing a particular area on
the map
• MKCoordinateRegion
Regions
Denver, Colorado
Demo dataplist of Brewery information: name, address, latitude, longitude
Loading Demo Data
Local area
MKAnnotation
MyAnnotation Class
Adding Annotations
Default Pins at annotations
Customizing pins• MKPinAnnotationView
• MKMapViewDelegate - set a delegate
Our purple pins
Custom markers• MKAnnotationView
Customizing the view
Customizing the Callout
Tapping the call out view
Reverse Geocoding
• Geocoding : address to coordinates
• geocoder.us other services
• Reverse geocoding : coordinates to address
MKReverseGeocoder
MKPlacemark
• Address info including, country code, country, postal code, administrative area, sub administrative area, locality, sub locality, thoroughfare, sub thoroughfare
• Conforms to MKAnnotation
• Has address dictionary with Address Book keys
Number of pins• Try to limit
annotations to ~100(?)
• Implement region change delegate methods
• Create and manage your own clusters
Challenges• Anchoring an object to a location on the
map and having it scale.
• Shapes - neighborhoods
• Lines - routes / paths
• View space to Geo Space- (CGPoint)convertCoordinate:(CLLocationCoordinate2D)coordinate toPointToView:(UIView *)view
- (CLLocationCoordinate2D)convertPoint:(CGPoint)point toCoordinateFromView:(UIView *)view
Legal limitationsI’m not a lawyer but think carefully before using this for:
vehicle/fleet tracking
routing
cacheing tiles
geocoding / mass reverse geocoding
Read the TOS
http://code.google.com/apis/maps/iphone/terms.html
Possible Options
• OpenStreetMap.org (OSM) - map/tile data
• Route-Me - OSS map view
• Cloudemade.com - services around OSM
• geocoder.us (among others)
Resources
• MapKit Framework Reference - Apple
• Using Map Kit with Bill Dudney - PragProg
• Using Map Kit ... Bill Dudney - Wednesday
Thank You
Julio Barros
http://www.E-String.com
http://twitter.com/JulioBarros
Also on Face book and Linked In
