/* |
File: MapViewController.m |
Abstract: n/a |
Version: 1.5 |
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*/ |
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#import "MapViewController.h" |
#import "DetailViewController.h" |
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#import "SFAnnotation.h" // annotation for the city of San Francisco |
#import "BridgeAnnotation.h" // annotation for the Golden Gate bridge |
#import "CustomAnnotation.h" // annotation for the Tea Garden |
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@interface MapViewController () <MKMapViewDelegate> |
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@property (nonatomic, weak) IBOutlet MKMapView *mapView; |
@property (nonatomic, strong) NSMutableArray *mapAnnotations; |
@property (nonatomic, strong) UIPopoverController *bridgePopoverController; |
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@end |
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#pragma mark - |
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@implementation MapViewController |
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- (void)gotoDefaultLocation |
{ |
// start off by default in San Francisco |
MKCoordinateRegion newRegion; |
newRegion.center.latitude = 37.786996; |
newRegion.center.longitude = -122.440100; |
newRegion.span.latitudeDelta = 0.112872; |
newRegion.span.longitudeDelta = 0.109863; |
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[self.mapView setRegion:newRegion animated:YES]; |
} |
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- (void)viewWillAppear:(BOOL)animated |
{ |
[super viewWillAppear:animated]; |
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// restore the nav bar to translucent |
self.navigationController.navigationBar.barStyle = UIBarStyleBlackTranslucent; |
} |
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- (void)viewDidLoad |
{ |
[super viewDidLoad]; |
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// create a custom navigation bar button and set it to always says "Back" |
UIBarButtonItem *temporaryBarButtonItem = [[UIBarButtonItem alloc] init]; |
temporaryBarButtonItem.title = @"Back"; |
self.navigationItem.backBarButtonItem = temporaryBarButtonItem; |
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// create out annotations array (in this example only 3) |
self.mapAnnotations = [[NSMutableArray alloc] initWithCapacity:2]; |
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// annotation for the City of San Francisco |
SFAnnotation *sfAnnotation = [[SFAnnotation alloc] init]; |
[self.mapAnnotations addObject:sfAnnotation]; |
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// annotation for Golden Gate Bridge |
BridgeAnnotation *bridgeAnnotation = [[BridgeAnnotation alloc] init]; |
[self.mapAnnotations addObject:bridgeAnnotation]; |
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// annotation for Japanese Tea Garden |
CustomAnnotation *item = [[CustomAnnotation alloc] init]; |
item.place = @"Tea Garden"; |
item.imageName = @"teagarden"; |
item.coordinate = CLLocationCoordinate2DMake(37.770, -122.4709); |
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[self.mapAnnotations addObject:item]; |
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[self allAction:self]; // initially show all annotations |
} |
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#pragma mark - Button Actions |
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- (void)gotoByAnnotationClass:(Class)annotationClass |
{ |
// user tapped "City" button in the bottom toolbar |
for (id annotation in self.mapAnnotations) |
{ |
if ([annotation isKindOfClass:annotationClass]) |
{ |
// remove any annotations that exist |
[self.mapView removeAnnotations:self.mapView.annotations]; |
// add just the city annotation |
[self.mapView addAnnotation:annotation]; |
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[self gotoDefaultLocation]; |
} |
} |
} |
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- (IBAction)cityAction:(id)sender |
{ |
[self gotoByAnnotationClass:[SFAnnotation class]]; |
} |
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- (IBAction)bridgeAction:(id)sender |
{ |
// user tapped "Bridge" button in the bottom toolbar |
[self gotoByAnnotationClass:[BridgeAnnotation class]]; |
} |
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- (IBAction)teaGardenAction:(id)sender |
{ |
// user tapped "Tea Gardon" button in the bottom toolbar |
[self gotoByAnnotationClass:[CustomAnnotation class]]; |
} |
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- (IBAction)allAction:(id)sender |
{ |
// user tapped "All" button in the bottom toolbar |
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// remove any annotations that exist |
[self.mapView removeAnnotations:self.mapView.annotations]; |
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// add all 3 annotations |
[self.mapView addAnnotations:self.mapAnnotations]; |
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[self gotoDefaultLocation]; |
} |
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#pragma mark - MKMapViewDelegate |
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// user tapped the disclosure button in the bridge callout |
// |
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control |
{ |
// here we illustrate how to detect which annotation type was clicked on for its callout |
id <MKAnnotation> annotation = [view annotation]; |
if ([annotation isKindOfClass:[BridgeAnnotation class]]) |
{ |
NSLog(@"clicked Golden Gate Bridge annotation"); |
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DetailViewController *detailViewController = [[self storyboard] instantiateViewControllerWithIdentifier:@"DetailViewController"]; |
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) |
{ |
// for iPad, we use a popover |
if (self.bridgePopoverController == nil) |
{ |
_bridgePopoverController = [[UIPopoverController alloc] initWithContentViewController:detailViewController]; |
} |
[self.bridgePopoverController presentPopoverFromRect:control.bounds |
inView:control |
permittedArrowDirections:UIPopoverArrowDirectionLeft |
animated:YES]; |
} |
else |
{ |
// for iPhone we navigate to a detail view controller using UINavigationController |
[self.navigationController pushViewController:detailViewController animated:YES]; |
} |
} |
} |
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- (MKAnnotationView *)mapView:(MKMapView *)theMapView viewForAnnotation:(id <MKAnnotation>)annotation |
{ |
MKAnnotationView *returnedAnnotationView = nil; |
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// in case it's the user location, we already have an annotation, so just return nil |
if (![annotation isKindOfClass:[MKUserLocation class]]) |
{ |
// handle our three custom annotations |
// |
if ([annotation isKindOfClass:[BridgeAnnotation class]]) // for Golden Gate Bridge |
{ |
returnedAnnotationView = [BridgeAnnotation createViewAnnotationForMapView:self.mapView annotation:annotation]; |
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// add a detail disclosure button to the callout which will open a new view controller page or a popover |
// |
// note: when the detail disclosure button is tapped, we respond to it via: |
// calloutAccessoryControlTapped delegate method |
// |
// by using "calloutAccessoryControlTapped", it's a convenient way to find out which annotation was tapped |
// |
UIButton *rightButton = [UIButton buttonWithType:UIButtonTypeDetailDisclosure]; |
[rightButton addTarget:nil action:nil forControlEvents:UIControlEventTouchUpInside]; |
((MKPinAnnotationView *)returnedAnnotationView).rightCalloutAccessoryView = rightButton; |
} |
else if ([annotation isKindOfClass:[SFAnnotation class]]) // for City of San Francisco |
{ |
returnedAnnotationView = [SFAnnotation createViewAnnotationForMapView:self.mapView annotation:annotation]; |
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// provide the annotation view's image |
returnedAnnotationView.image = [UIImage imageNamed:@"flag.png"]; |
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// provide the left image icon for the annotation |
UIImageView *sfIconView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"SFIcon.png"]]; |
returnedAnnotationView.leftCalloutAccessoryView = sfIconView; |
} |
else if ([annotation isKindOfClass:[CustomAnnotation class]]) // for Japanese Tea Garden |
{ |
returnedAnnotationView = [CustomAnnotation createViewAnnotationForMapView:self.mapView annotation:annotation]; |
} |
} |
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return returnedAnnotationView; |
} |
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@end |