mapView 地图视图

1.在Info.plist 添加下面两个

NSLocationAlwaysUsageDescription //NS位置总是使用描述

NSLocationWhenInUseUsageDescription //NS位置在使用使用描述

2.在工程里“Build Phases”—> Link Binary With Libraries 添加 MapKit.framework

3.main.storyboard 里添加 MapKit View视图

#import "ViewController.h"
#import <CoreLocation/CoreLocation.h> //1
#import <MapKit/MapKit.h> //11
@interface ViewController ()<CLLocationManagerDelegate, MKMapViewDelegate>
{
    CLLocationManager *_locationMgr; //1
    CLGeocoder *_geocoder; //地理位置编码与反编码 34
}
@property (weak, nonatomic) IBOutlet MKMapView *mapView; //10
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    //35
    _geocoder = [[CLGeocoder alloc]init];

    //创建对象 1
    _locationMgr = [[CLLocationManager alloc]init];
    //定位精度, 精度越高，定位所需时间越长 // 2 kCLLocationAccuracyBest 定位精度最好的
    _locationMgr.desiredAccuracy = kCLLocationAccuracyBest;
    //重新定位所需移动的最小距离，None表示任意距离都会导致重新定位 / 3
    _locationMgr.distanceFilter = kCLDistanceFilterNone;
    //添加_locationMgr的代理CLLocationManagerDelegate
    _locationMgr.delegate = self; //4

    //开始更新地理位置 5 locationServicesEnabled （启用定位服务）
    if ([CLLocationManager locationServicesEnabled]) {

        //请求用户授权 9
        [_locationMgr requestAlwaysAuthorization];


        //startUpdatingLocation 开始更新位置 6
        [_locationMgr startUpdatingLocation];


    }
    else
    {
        NSLog(@"location serivce not enabled!");
    }

    _mapView.delegate = self;

}
#pragma mark - mapView

//将标注显示出来 addAnnotation时，会调用该方法 19
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
    static NSString *indentifer = @"anno"; //20

    if (_mapView.userLocation != annotation) {
        //不是用户当前位置则创建
        MKAnnotationView *pinAnno = (MKAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:indentifer]; //21
        if (pinAnno == nil) {
            pinAnno = [[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:indentifer]; //22
            //从天而降的动画
//            pinAnno.animatesDrop = YES;//23
//            pinAnno.pinColor = MKpinAnnotationColorPurple; //24

            pinAnno.image = [UIImage imageNamed:@"icon_route_start"]; //25

            pinAnno.canShowCallout = YES; //26
            UIImageView *imgView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 44, 44)]; //27
            imgView.image = [UIImage imageNamed:@"01"]; //28
              //
            //给标注设置左弹出图片 //29
            pinAnno.leftCalloutAccessoryView = imgView;

            UIButton *btn = [UIButton buttonWithType:UIButtonTypeInfoLight];
            //给标注添加按钮 32
            pinAnno.rightCalloutAccessoryView = btn;

        }
        return pinAnno; //23
    }
    else
    {
        CLLocationCoordinate2D userLocation = _mapView.userLocation.location.coordinate;
        //打印当前的经度与维度
        NSLog(@"lat:%f, long:%f",userLocation.latitude,userLocation.longitude);
        return nil;
    }



}

#pragma mark - MKMapViewDelegate
//33
- (void)mapView:(MKMapView *)mapView annotationView:(MKAnnotationView *)view calloutAccessoryControlTapped:(UIControl *)control //control就是上面创建的button
{
    NSLog(@"control:%@", control);
}

//加载地图地图视图并失败时调用 13
- (void)mapViewDidFailLoadingMap:(MKMapView *)mapView withError:(NSError *)error
{
    NSLog(@"%s",__func__);
}
// 地图视图并完成加载地图 14
- (void)mapViewDidFinishLoadingMap:(MKMapView *)mapView
{
    NSLog(@"%s",__func__);
}

#pragma mark -CLLocationManagerDelegate
//获取地理位置时，会调用该方法 didUpdateLocations （并更新位置） 7
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
    NSLog(@"locations:%@",locations);
    [_locationMgr stopUpdatingLocation]; //停止定位10

    CLLocation *location = locations[0]; //获取一个位置 12

    CLLocationCoordinate2D coordinate = location.coordinate; //13
    //让地图定位到指定的点 , span是地图的缩放级别
    MKCoordinateSpan span = MKCoordinateSpanMake(0.01, 0.01);//14
    MKCoordinateRegion region = MKCoordinateRegionMake(coordinate, span);
    [_mapView setRegion:region animated:YES]; //15

//    //给地图添加标注
//    MKPointAnnotation *pointAnno = [[MKPointAnnotation alloc]init]; //16
//
//    pointAnno.coordinate = coordinate; //给标注指定经纬度 17
//
//    //如果不设置title,则无法弹出气泡信息框
//    pointAnno.title = @"title"; //30
//    pointAnno.subtitle = @"subtitle"; //31
//
//    [_mapView addAnnotation:pointAnno]; //将标注加入地图 18


    //地理位置反编码，将经纬度信息转换为真实的位置 36
    [_geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {

//        NSLog(@"place:%@", placemarks);
        if (error) {
            NSLog(@"error:%@", error); //37
        }
        CLPlacemark *clpk = placemarks[0]; //38 获取位置信息
        NSLog(@"clpk:%@",clpk.addressDictionary);

        NSLog(@"city:%@", clpk.addressDictionary[@"City"]);
        NSLog(@"street:%@", clpk.addressDictionary[@"Street"]);

        //给地图添加标注
        MKPointAnnotation *pointAnno = [[MKPointAnnotation alloc]init]; //16

        pointAnno.coordinate = coordinate; //给标注指定经纬度 17

        //如果不设置title,则无法弹出气泡信息框
        pointAnno.title = [NSString stringWithFormat:@"%@",clpk.addressDictionary[@"City"]]; //30
        pointAnno.subtitle = [NSString stringWithFormat:@"%@",clpk.addressDictionary[@"Street"]]; //31

        [_mapView addAnnotation:pointAnno]; //将标注加入地图 18
    }];


}

//获取地理位置出错时，调用此方法 didFailWithError 8
- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error
{

    NSLog(@"err:%@",error); #import "ViewController.h"
#import <CoreLocation/CoreLocation.h> //1
#import <MapKit/MapKit.h> //11
@interface ViewController ()<CLLocationManagerDelegate, MKMapViewDelegate>
{
    CLLocationManager *_locationMgr; //1
    CLGeocoder *_geocoder; //地理位置编码与反编码 34
}
@property (weak, nonatomic) IBOutlet MKMapView *mapView; //10
@end

@implementation ViewController