MKPinAnnotationView和MKAnnotatio…

MKPinAnnotationView和MKAnnotationView区别，MKAnnotationView可以使用静态图片作为实例作为view，如果想使用Apple自带的标准大头针，那么需要使用MKPinAnnotationView。

MKAnnotation Protocol
Reference

@protocol MKAnnotation
<<span
class="s2">NSObject>

// Center latitude and longitude of the annotion view.

// The implementation of this property must be KVO
compliant.

@property (nonatomic,
readonly) CLLocationCoordinate2D
coordinate;

@optional

// Title and subtitle for use by selection UI.

@property (nonatomic,
readonly, copy) NSString
*title;

@property (nonatomic,
readonly, copy) NSString
*subtitle;

// Called as a result of dragging an annotation view.

-
(void)setCoordinate:(CLLocationCoordinate2D)newCoordinate
NS_AVAILABLE(NA, 4_0);