标签：blog http io color ar os 使用 sp for
typedef struct {
CLLocationCoordinate2D center; // 区域的中心点位置
MKCoordinateSpan span; // 区域的跨度
} MKCoordinateRegion;
typedef struct {
CLLocationDegrees latitudeDelta; // 纬度跨度
CLLocationDegrees longitudeDelta; // 经度跨度
} MKCoordinateSpan;
8:大头针
8.1：大头针的基本操作
#import <MapKit/MapKit.h>
@interface MJTuangouAnnotation : NSObject <MKAnnotation>
/** 坐标位置 */
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
/** 标题 */
@property (nonatomic, copy) NSString *title;
/** 子标题 */
@property (nonatomic, copy) NSString *subtitle;
@end
8.3:添加大头针
MJTuangouAnnotation *anno = [[MJTuangouAnnotation alloc] init];
anno.title = @"传智播客iOS学院";
anno.subtitle = @“全部课程15折，会员20折，老学员30折";
anno.coordinate = CLLocationCoordinate2DMake(40, 116);
[self.mapView addAnnotation:anno];
8.4:自定义大头针
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id <MKAnnotation>)annotation;
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
// 判断annotation的类型
if (![annotation isKindOfClass:[MJTuangouAnnotation class]]) return nil;
// 创建MKAnnotationView
static NSString *ID = @"tuangou";
MKAnnotationView *annoView = [mapView dequeueReusableAnnotationViewWithIdentifier:ID];
if (annoView == nil) {
annoView = [[MKAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:ID];
annoView.canShowCallout = YES;
}
// 传递模型数据
annoView.annotation = annotation;
// 设置图片
MJTuangouAnnotation *tuangouAnnotation = annotation;
annoView.image = [UIImage imageNamed:tuangouAnnotation.icon];
return annoView;
}
9:MKAnnotationView
标签：blog http io color ar os 使用 sp for
原文地址：http://www.cnblogs.com/xiaokanfengyu/p/4088407.html
