iOS的高德地图标注特定位置

在开发时有时候遇到项目里面需要展示公司的位置，这时如果导入百度地图什么的就太浪费资源，而且还占内存

这时只要调用自动高德地图的就行了

自己写一个控制器，导入框架

现在导入系统框架只要多打次就能出来了，没必要去link添加

 #import "MapViewCtl.h"
 #import <CoreLocation/CoreLocation.h>
 #import <MapKit/MapKit.h>

 //获取屏幕 宽度、高度
 #define SCREEN_WIDTH ([UIScreen mainScreen].bounds.size.width)
 #define SCREEN_HEIGHT ([UIScreen mainScreen].bounds.size.height)

 @interface MapViewCtl ()<MKMapViewDelegate>
 {
     MKMapView *mapView;
 }
 @property (nonatomic, readwrite) CLLocationCoordinate2D coordinate;
 @end

 @implementation MapViewCtl

 - (void)viewDidLoad {
     [super viewDidLoad];
     mapView = [[MKMapView alloc]initWithFrame:CGRectMake(, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];

     mapView.mapType = MKMapTypeStandard;

     CLLocationCoordinate2D location = CLLocationCoordinate2DMake(, );//纬度，经度
     float zoomLevel = 0.01;
     MKCoordinateRegion region = MKCoordinateRegionMake(location, MKCoordinateSpanMake(zoomLevel, zoomLevel));
     [mapView setRegion:[mapView regionThatFits:region] animated:YES];
     [self.view addSubview:mapView];

     MKPointAnnotation *pointAnn = [[MKPointAnnotation alloc]init];
     pointAnn.coordinate = location;
     pointAnn.title = @"某某有限公司";
     pointAnn.subtitle = @"某某地址";
     [mapView addAnnotation:pointAnn];
     [mapView selectAnnotation:pointAnn animated:YES];

 }

如果不知道怎么查经纬度的，可以参考这个 http://www.doc88.com/p-3157554808098.html

获取到的经纬度是  （经度，纬度），填到

CLLocationCoordinate2DMake(22, 111)时，要倒过来填  （纬度，经度）