iOS Day 20

MapAnnotation.h

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface MapAnnotation : NSObject <MKAnnotation>{
    CLLocationCoordinate2D _coordinate;
}

- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate;

@end

MapAnnotation.m

#import "MapAnnotation.h"

@implementation MapAnnotation

- (id)initWithCoordinate:(CLLocationCoordinate2D)coordinate {
    self = [super init];
    if (self != nil) {
        _coordinate = coordinate;
    }
    return self;
}

@end

mapViewForAnnotation.m

- (MKAnnotationView *)mapView:(MKMapView *)map viewForAnnotation:(id <MKAnnotation>)annotation {
    if ([annotation isKindOfClass:[MKUserLocation class]]) {
        return nil;
    }
    static NSString *AnnotationViewID = @"annotationViewID";
    MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[self.mapView dequeueReusableAnnotationViewWithIdentifier:AnnotationViewID];
    if (annotationView == nil) {
        annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];
    }
    annotationView.canShowCallout = YES;
    annotationView.annotation = annotation;
    return annotationView;
}

tappedAdd.m

- (IBAction)tappedAdd:(id)sender {
    CLLocationCoordinate2D mapPoint;
    mapPoint.longitude = -122.132;
    mapPoint.latitude = 47.624300;
    
    MKPointAnnotation *anny = [[MKPointAnnotation alloc] init];
    anny.coordinate = mapPoint;
    anny.title = @"Annotation description";
    anny.subtitle = @"Annotation subtitle";
    [self.mapView addAnnotation:anny];
}

tappedRemove.m

- (IBAction)tappedRemove:(id)sender {
    for (id annotation in self.mapView.annotations)
        if (![annotation isKindOfClass:[MKUserLocation class]]) {
            [self.mapView removeAnnotation:annotation];
        }
}

ViewController.h

#import <UIKit/UIKit.h>
#import <MapKit/MapKit.h>
#import "CoreLocationController.h"

@interface ViewController : UIViewController <CoreLocationControllerDelegate, MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet UILabel *lblLongitude;
@property (weak, nonatomic) IBOutlet UILabel *lblLatitude;
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@property (nonatomic, retain) CoreLocationController *locationController;
- (IBAction)tappedAdd:(id)sender;
- (IBAction)tappedRemove:(id)sender;

@end

ViewDidLoad.h

- (void)viewDidLoad
{
    [super viewDidLoad];
  // Do any additional setup after loading the view, typically from a nib.
    
    self.mapView.showsUserLocation = YES;
    self.mapView.delegate = self;
    
    self.locationController = [[CoreLocationController alloc] init];
	self.locationController.delegate = self;
	[self.locationController.locationManager startUpdatingLocation];
}