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#import "AnnotationViewMultipleExample.h"
@import Mapbox;
NSString *const MBXExampleAnnotationViewMultiple = @"AnnotationViewMultipleExample";
// MGLPointAnnotation subclass
@interface MyCustomPointAnnotation : MGLPointAnnotation
@property (nonatomic, assign) BOOL willUseImage;
@end
@implementation MyCustomPointAnnotation
@end
// end MGLPointAnnotation subclass
@interface AnnotationViewMultipleExample () <MGLMapViewDelegate>
@end
@implementation AnnotationViewMultipleExample
- (void)viewDidLoad {
[super viewDidLoad];
// Create a new map view using the Mapbox Light style.
MGLMapView *mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds
styleURL:[MGLStyle lightStyleURLWithVersion:9]];
mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
// Set the map's center coordinate and zoom level.
mapView.centerCoordinate = CLLocationCoordinate2DMake(36.54,-116.97);
mapView.zoomLevel = 9;
mapView.delegate = self;
[self.view addSubview:mapView];
// Create four new point annotations with specified coordinates and titles.
MyCustomPointAnnotation *pointA = [[MyCustomPointAnnotation alloc] init];
pointA.title = @"Stovepipe Wells";
pointA.coordinate = CLLocationCoordinate2DMake(36.4623,-116.8656);
pointA.willUseImage = YES;
MyCustomPointAnnotation *pointB = [[MyCustomPointAnnotation alloc] init];
pointB.title = @"Furnace Creek";
pointB.coordinate = CLLocationCoordinate2DMake(36.6071,-117.1458);
pointB.willUseImage = YES;
MyCustomPointAnnotation *pointC = [[MyCustomPointAnnotation alloc] init];
pointC.title = @"Zabriskie Point";
pointC.coordinate = CLLocationCoordinate2DMake(36.4208,-116.8101);
MyCustomPointAnnotation *pointD = [[MyCustomPointAnnotation alloc] init];
pointD.title = @"Mesquite Flat Sand Dunes";
pointD.coordinate = CLLocationCoordinate2DMake(36.6836,-117.1005);
// Fill an array with four point annotations.
NSArray *myPlaces = @[pointA, pointB, pointC, pointD];
// Add all annotations to the map all at once, instead of individually.
[mapView addAnnotations:myPlaces];
}
// This delegate method is where you tell the map to load a view for a specific annotation based on the willUseImage property of the custom subclass.
- (MGLAnnotationView *)mapView:(MGLMapView *)mapView viewForAnnotation:(id <MGLAnnotation>)annotation {
if ([annotation isKindOfClass:[MyCustomPointAnnotation class]]) {
MyCustomPointAnnotation *castAnnotation = (MyCustomPointAnnotation *)annotation;
if (castAnnotation.willUseImage) {
return nil;
}
}
// Assign a reuse identifier to be used by both of the annotation views, taking advantage of their similarities.
NSString *reuseIdentifier = @"reusableDotView";
// For better performance, always try to reuse existing annotations.
MGLAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
// If there’s no reusable annotation view available, initialize a new one.
if (!annotationView) {
annotationView = [[MGLAnnotationView alloc] initWithReuseIdentifier:reuseIdentifier];
annotationView.frame = CGRectMake(0, 0, 30, 30);
annotationView.layer.cornerRadius = annotationView.frame.size.width / 2;
annotationView.layer.borderColor = [UIColor whiteColor].CGColor;
annotationView.layer.borderWidth = 4.0;
annotationView.backgroundColor = [UIColor colorWithRed:0.03 green:0.80 blue:0.69 alpha:1.0];
}
return annotationView;
}
// This delegate method is where you tell the map to load an image for a specific annotation based on the willUseImage property of the custom subclass.
- (MGLAnnotationImage *)mapView:(MGLMapView *)mapView imageForAnnotation:(id <MGLAnnotation>)annotation {
if ([annotation isKindOfClass:[MyCustomPointAnnotation class]]) {
MyCustomPointAnnotation *castAnnotation = (MyCustomPointAnnotation *)annotation;
if (!castAnnotation.willUseImage) {
return nil;
}
}
// For better performance, always try to reuse existing annotations.
MGLAnnotationImage *annotationImage = [mapView dequeueReusableAnnotationImageWithIdentifier:@"camera"];
// If there is no reusable annotation image available, initialize a new one.
if (!annotationImage) {
UIImage *image = [UIImage imageNamed:@"camera"];
image = [image imageWithAlignmentRectInsets:UIEdgeInsetsMake(0, 0, image.size.height/2, 0)];
annotationImage = [MGLAnnotationImage annotationImageWithImage:image reuseIdentifier:@"camera"];
}
return annotationImage;
}
- (BOOL)mapView:(MGLMapView *)mapView annotationCanShowCallout:(id<MGLAnnotation>)annotation {
// Always allow callouts to popup when annotations are tapped.
return YES;
}
@end
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