使用地图显示我的位置

红太狼 2023-10-18 11:44 39阅读 0赞

#import <UIKit/UIKit.h>
    #import <MapKit/MapKit.h>
    #import <CoreLocation/CoreLocation.h>
    
    @interface mylocation : UIViewController<CLLocationManagerDelegate,MKMapViewDelegate>
    @property (retain, nonatomic) IBOutlet MKMapView *m_map;
    - (IBAction)return:(id)sender;
    
    @end

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- (void)viewDidLoad
    {
        [super viewDidLoad];
        // Do any additional setup after loading the view from its nib.
        self.m_map.showsUserLocation=YES;
        CLLocationManager *locationManager = [[CLLocationManager alloc] init];//创建位置管理器
        locationManager.delegate=self;//设置代理
        locationManager.desiredAccuracy=kCLLocationAccuracyBest;//指定需要的精度级别
        locationManager.distanceFilter=1000.0f;//设置距离筛选器
        [locationManager startUpdatingLocation];//启动位置管理器
        MKCoordinateSpan theSpan;
        //地图的范围 越小越精确
        theSpan.latitudeDelta=0.05;
        theSpan.longitudeDelta=0.05;
        MKCoordinateRegion theRegion;
        theRegion.center=[[locationManager location] coordinate];
        theRegion.span=theSpan;
        [self.m_map setRegion:theRegion];
        [locationManager release];
    }

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- (IBAction)FindUs:(id)sender {
        self.UsMap.hidden = NO;
        CLLocationCoordinate2D coord;
        coord.latitude = 34.7993;
        coord.longitude = 113.6939;
        POI *poi = [[POI alloc]initWithCoords:coord];
       [UsMap addAnnotation:poi]; 
        
        MKCoordinateRegion theRegion = { {0.0, 0.0 }, { 0.0, 0.0 } };
        theRegion.center=coord;
        [UsMap setZoomEnabled:YES];
        [UsMap setScrollEnabled:YES];
        theRegion.span.longitudeDelta = 0.01f;
        theRegion.span.latitudeDelta = 0.01f;
        [UsMap setRegion:theRegion animated:YES];
    }

@interface POI : NSObject <MKAnnotation> {   
        
        CLLocationCoordinate2D coordinate;   
        NSString *subtitle;   
        NSString *title;   
    }   
    
    @property (nonatomic,readonly) CLLocationCoordinate2D coordinate;   
    @property (nonatomic,retain) NSString *subtitle;   
    @property (nonatomic,retain) NSString *title;   
    
    -(id) initWithCoords:(CLLocationCoordinate2D) coords;   
    
    @end

@implementation POI   
    
    @synthesize coordinate,subtitle,title;   
    
    - (id) initWithCoords:(CLLocationCoordinate2D) coords{   
        
        self = [super init];   
        
        if (self != nil) {   
            
            coordinate = coords;    
            
        }   
        
        return self;   
        
    }   
    
    - (void) dealloc   
    
    {   
        [title release];   
        [subtitle release];   
        [super dealloc];   
    }   
    
    @end

/获取位置信息
        CLGeocoder *geocoder = [[CLGeocoder alloc] init];
        [geocoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray* placemarks,NSError *error)
        {
            if (placemarks.count >0   )
            {
                CLPlacemark * plmark = [placemarks objectAtIndex:0];
                
                NSString * country = plmark.country;
                NSString * city    = plmark.locality;
                
                
                NSLog(@"%@-%@-%@",country,city,plmark.name);
                self.m_locationName.text =plmark.name;
            }
            
            NSLog(@"%@",placemarks);
            
        }];
        
        //[geocoder release];

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