ios-地图 大头针的使用

#import "ViewController.h"
//1.导入MKMapKit
#import <MapKit/MapKit.h>

@interface ViewController ()

- (IBAction)segmentHandle:(UISegmentedControl *)sender;
@property (nonatomic, weak)MKMapView *mapView;

@end

@implementation ViewController

- (IBAction)segmentHandle:(UISegmentedControl *)sender {
/*
MKMapTypeStandard 标准地图
MKMapTypeSatellite卫星地图
MKMapTypeHybrid 混合地图
*/

MKMapType type;
switch (sender.selectedSegmentIndex) {
case 0:
type = MKMapTypeStandard;
//标准地图
break;
case 1:
type = MKMapTypeSatellite;
//卫星地图

break;
case 2:
type = MKMapTypeHybrid;
//混合地图
break;

default:
break;
}

self.mapView.mapType = type;

}

- (MKMapView *)mapView
{
if (!_mapView) {

#if 0
MKMapView *mapView = [[MKMapView alloc]initWithFrame:self.view.bounds];

CLLocationCoordinate2D coordinate2D;
//保存经纬度对象
coordinate2D.latitude = 39.9087607470;
coordinate2D.longitude = 116.3975780490;

//保存经纬度比例
MKCoordinateSpan span;
//纬度
span.latitudeDelta = 1/100;
span.longitudeDelta = 1/100;

//范围：两部分 1.中心点经纬度 经纬度比例尺
MKCoordinateRegion region;
region.center = coordinate2D;
region.span = span;

[mapView setRegion:region];

[self.view addSubview:mapView];

_mapView = mapView;
#endif

MKMapView *mapView = [[MKMapView alloc]initWithFrame:self.view.bounds];

//中心点经纬度
CLLocationCoordinate2D coordinate2D = {39.9087607478,116.3975780499};

//比例
MKCoordinateSpan span = {0.01,0.01};

//设置范围
[mapView setRegion:MKCoordinateRegionMake(coordinate2D, span)];

[self.view addSubview:mapView];
_mapView = mapView;
}
return _mapView;
}

/**
*  添加标注
*/
- (void)addAnnotation
{
CLLocationCoordinate2D coordinate2D = {39.9087607478,116.3975780499};

//大头针对象
MKPointAnnotation *pointAnnotation = [[MKPointAnnotation alloc]init];

pointAnnotation.coordinate = coordinate2D;
//标题
pointAnnotation.title = @"北京市";

//子标题
pointAnnotation.subtitle = @"天安门";

//添加标注
[self.mapView addAnnotation:pointAnnotation];

#if 0

//1.添加一个标注
[self.mapView addAnnotation:<#(id<MKAnnotation>)#>];

//2.一次性添加多个标注
[self.mapView addAnnotations:<#(NSArray *)#>];

//3.移除指定标注
[self.mapView removeAnnotation:<#(id<MKAnnotation>)#>];

//4.移除多个标注
[self.mapView removeAnnotations:<#(NSArray *)#>];

//5.获取多个标注
self.mapView.annotations;

//6.移除所有标注

[self.mapView removeAnnotations:self.mapView.annotations;];

#endif

}
- (void)viewDidLoad {
[super viewDidLoad];

//地图显示类
MKMapView *mapView = [[MKMapView alloc]initWithFrame:self.view.bounds];

[self.view addSubview:mapView];

[self addAnnotation];

// Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end