MKMapView 自定义大头针的图片

创建一个MKAnnotationView的子类，用于修改大头针的图片

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

@interface CustomAnnotationView : MKAnnotationView

@end

- (id)initWithAnnotation:(id<MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier {
    self = [super initWithAnnotation:annotation reuseIdentifier:@"ID"];
    if (self) {
        self.backgroundColor = [UIColor clearColor];
    }
    
    return self;
}

在mapview的委托函数中，直接使用这个view初始化大头针

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
    //判断系统大头针
    if ([annotation isKindOfClass:[mapView.userLocation class]]) {
        return nil;
    }
    
    CustomAnnotationView *pinView = (CustomAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:@"ID"];
    if (pinView == nil) {
        pinView = [[CustomAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"ID"];
        [pinView setDraggable:YES];
    }
    
    if ([[annotation title] isEqualToString:@"酒店1"]) {
        pinView.image = [UIImage imageNamed:@"1.PNG"];
    } else if ([[annotation title] isEqualToString:@"酒店2"]) {
        pinView.image = [UIImage imageNamed:@"2.png"];
    } else if ([[annotation title] isEqualToString:@"酒店3"]) {
        pinView.image = [UIImage imageNamed:@"3.png"];
    } else {
        pinView.image = [UIImage imageNamed:@"4.png"];
    }

    pinView.canShowCallout = YES;
    
    return pinView;
}

转载于：http://ningmengjiabing.blog.163.com/blog/static/204847198201292963224732/，有修改