It's a short presentation (which can be treated as an introduction to the topic) about geolocation and Apple's maps API.

1. Introduction to
Geolocation & Apple’s
Maps API
Julian Król
iOS Software Engineer @ MiQUiDO
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2. Geolocation
How to locate user with the Apple’s device?
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3. @import CoreLocation
•
location basis
•
Standard Locating vs Significant change location service
•
accuracy vs performance
•
constraints
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4. Accuracy vs Performance
Source
Accuracy
Power
Speed
Celluar
Low
Low
Fast
Wi-Fi
Medium
Medium
Normal
GPS
High
High
Slow
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5. locationManager.desiredAccuracy
•
kCLLocationAccuracyBestForNavigation
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kCLLocationAccuracyBest
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kCLLocationAccuracyNearestTenMeters
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kCLLocationAccuracyHundredMeters
•
kCLLocationAccuracyKilometer
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kCLLocationAccuracyThreeKilometers
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6. Location Service Constraint
•
always check availability of the service
([CLLocationManager locationServicesEnabled])
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also take a look at authorization status
([CLLocationManager authorizationStatus])
•
if app requires retrieving location add
UIRequiredDeviceCapabilities key to Info.plist
(value location-services and/or gps)
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7. The Significant-Change Location Service
•
low power way of tracking location changes
•
requires built-in cellular radio
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availability starts from iOS 4
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8. Region Monitoring
•
you can not monitor infinite number of regions
•
number of monitored regions is limited for the
app to 20
•
notifications on enter and exit region
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margin distance before notifying about entering/
exiting a region
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9. Time for code show
Code for this presentation is available on GitHub:
https://github.com/JulianKrol/maps_presentation
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10. Enough! Move one… Maps API!
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11. @import MapKit
Add map view to your app and check this out:
mapView.showsUserLocation = YES;
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12. MKAnnotation protocol
•
coordinate (required)
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title (optional)
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subtitle (optional)
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13. Almighty
MKOverlayRenderer
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draws a visual effect of an overlay it contain
(id<MKOverlay>)
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subclasses overrides
drawMapRect:zoomScale:inContext:
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has a few subclasses (MKTileOverlayRenderer,
MKOverlayPathRenderer —> three more)
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14. Let’s travel a bit…
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15. More info about Maps
•
https://developer.apple.com/library/ios/
documentation/userexperience/conceptual/
LocationAwarenessPG/MapKit/MapKit.html
•
https://www.captechconsulting.com/blog/ericstroh/ios-7-tutorial-series-map-kit
•
https://developer.apple.com/library/ios/
documentation/userexperience/conceptual/
LocationAwarenessPG/AnnotatingMaps/
AnnotatingMaps.html
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16. For even more involved
•
Google Maps for iOS https://developers.google.com/maps/
documentation/ios/
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MapQuest http://developer.mapquest.com
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Spatial database (example) http://postgis.net
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17. Questions?
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