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 ProtocolReference

@protocol MKAnnotation<<spanclass="s2">NSObject>

// Center latitude and longitude of the annotion view.

// The implementation of this property must be KVOcompliant.

@property (nonatomic,readonly) CLLocationCoordinate2Dcoordinate;

@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)newCoordinateNS_AVAILABLE(NA, 4_0);