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diff --git a/platform/ios/demo/Examples/ObjectiveC/AnnotationViewExample.m b/platform/ios/demo/Examples/ObjectiveC/AnnotationViewExample.m
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+#import "AnnotationViewExample.h"
+@import Mapbox;
+
+NSString *const MBXExampleAnnotationView = @"AnnotationViewExample";
+
+// MGLAnnotationView subclass
+@interface CustomAnnotationView : MGLAnnotationView
+@end
+
+@implementation CustomAnnotationView
+
+- (void)layoutSubviews {
+ [super layoutSubviews];
+
+ // Force the annotation view to maintain a constant size when the map is tilted.
+ self.scalesWithViewingDistance = false;
+
+ // Use CALayer’s corner radius to turn this view into a circle.
+ self.layer.cornerRadius = self.frame.size.width / 2;
+ self.layer.borderWidth = 2;
+ self.layer.borderColor = [UIColor whiteColor].CGColor;
+}
+
+- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
+ [super setSelected:selected animated:animated];
+
+ // Animate the border width in/out, creating an iris effect.
+ CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"borderWidth"];
+ animation.duration = 0.1;
+ self.layer.borderWidth = selected ? self.frame.size.width / 4 : 2;
+ [self.layer addAnimation:animation forKey:@"borderWidth"];
+}
+
+@end
+
+
+//
+// Example view controller
+@interface AnnotationViewExample () <MGLMapViewDelegate>
+@end
+
+@implementation AnnotationViewExample
+
+- (void)viewDidLoad {
+ [super viewDidLoad];
+
+ MGLMapView *mapView = [[MGLMapView alloc] initWithFrame:self.view.bounds];
+ mapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
+ mapView.styleURL = [MGLStyle darkStyleURLWithVersion:9];
+ mapView.tintColor = [UIColor lightGrayColor];
+ mapView.centerCoordinate = CLLocationCoordinate2DMake(0, 66);
+ mapView.zoomLevel = 2;
+ mapView.delegate = self;
+ [self.view addSubview:mapView];
+
+ // Specify coordinates for our annotations.
+ CLLocationCoordinate2D coordinates[] = {
+ CLLocationCoordinate2DMake(0, 33),
+ CLLocationCoordinate2DMake(0, 66),
+ CLLocationCoordinate2DMake(0, 99),
+ };
+ NSUInteger numberOfCoordinates = sizeof(coordinates) / sizeof(CLLocationCoordinate2D);
+
+ // Fill an array with point annotations and add it to the map.
+ NSMutableArray *pointAnnotations = [NSMutableArray arrayWithCapacity:numberOfCoordinates];
+ for (NSUInteger i = 0; i < numberOfCoordinates; i++) {
+ CLLocationCoordinate2D coordinate = coordinates[i];
+ MGLPointAnnotation *point = [[MGLPointAnnotation alloc] init];
+ point.coordinate = coordinate;
+ point.title = [NSString stringWithFormat:@"%.f, %.f", coordinate.latitude, coordinate.longitude];
+ [pointAnnotations addObject:point];
+ }
+
+ [mapView addAnnotations:pointAnnotations];
+}
+
+#pragma mark - MGLMapViewDelegate methods
+
+// This delegate method is where you tell the map to load a view for a specific annotation. To load a static MGLAnnotationImage, you would use `-mapView:imageForAnnotation:`.
+- (MGLAnnotationView *)mapView:(MGLMapView *)mapView viewForAnnotation:(id <MGLAnnotation>)annotation {
+ // This example is only concerned with point annotations.
+ if (![annotation isKindOfClass:[MGLPointAnnotation class]]) {
+ return nil;
+ }
+
+ // Use the point annotation’s longitude value (as a string) as the reuse identifier for its view.
+ NSString *reuseIdentifier = [NSString stringWithFormat:@"%f", annotation.coordinate.longitude];
+
+ // For better performance, always try to reuse existing annotations.
+ CustomAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
+
+ // If there’s no reusable annotation view available, initialize a new one.
+ if (!annotationView) {
+ annotationView = [[CustomAnnotationView alloc] initWithReuseIdentifier:reuseIdentifier];
+ annotationView.frame = CGRectMake(0, 0, 40, 40);
+
+ // Set the annotation view’s background color to a value determined by its longitude.
+ CGFloat hue = (CGFloat)annotation.coordinate.longitude / 100;
+ annotationView.backgroundColor = [UIColor colorWithHue:hue saturation:0.5 brightness:1 alpha:1];
+ }
+
+ return annotationView;
+}
+
+- (BOOL)mapView:(MGLMapView *)mapView annotationCanShowCallout:(id<MGLAnnotation>)annotation {
+ return YES;
+}
+
+@end