MyRunnerFirstVersion

Let's play with MapKit.

What's to learn from this app?

1. Measures and tracks your runs using Core Location.

   CLLocationManager

   [self.locationMgr startUpdatingLocation]; [self.locationMgr stopUpdatingLocation];

   override location mangager delegate method

   -(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations;

2. Displays real-time data, like the run's average pace, along with an active map.

   NSTimer

   [NSTimer scheduledTimerWithTimeInterval:(1.0) target:self selector:@selector(eachSecond) userInfo:nil repeats:YES]; [self.timer invalidate];

   load map three steps

   Step-1: set the map region/bounds so that only the run is shown and not the entire world. (Required) Step-2: set the lines over the map to indidate where the run went. (Required) Step-3: Style it. tell the map view to add all the annotations. (Optional)

   how to play a sound

3. Maps out a run with a color-coded polyline and custom annotations at each checkpoint (match badge's distance spot).

   subclass

   MultiColorPolylineSegment : MKPolyline BadgeAnnotation : MKPointAnnotation

   override map view delegate methods

   mapView:rendererForOverlay: mapView:viewForAnnotation:

4. Badges and Awards for personal progress in distance (Badge) and speed (Award). math calculator and algorithm in BadgeController

5. Core Data

   three key properties

   NSManagedObjectModel *managedObjectModel; NSPersistentStoreCoordinator *persistentStoreCoordinator; NSManagedObjectContext *managedObjectContext; // like a DB connection

   read data from core data db

   write data into core data db