系统定位

#import "ViewController.h"
#import



@interface ViewController ()< CLLocationManagerDelegate >

@property ( nonatomic , retain ) CLLocationManager *manger;

@end

@implementation ViewController

- ( void )viewDidLoad {
    [ super viewDidLoad ];
    // Do any additional setup after loading the view, typically from a nib.
    /**
     定位
    
     - returns:
     */
   
    self . manger = [[ CLLocationManager alloc ] init ];
    self . manger . delegate = self ;
    // 距离刷新
    self . manger . distanceFilter = 10 ;
    // 定位精度
    self . manger . desiredAccuracy = kCLLocationAccuracyBestForNavigation ;
    // 开始定位
    [ self . manger startUpdatingLocation ];
    // 设置什么时候开始定位
    // 程序只要运行就会定位
    [ self . manger requestAlwaysAuthorization ];
    // 程序运行就会定位
    [ self . manger requestWhenInUseAuthorization ];
    // 计算经纬度之间的距离
    [ self countdistance ];
   
   
   
   
   
}

-( void )countdistance{
    CLLocation *location = [[ CLLocation alloc ] initWithLatitude : 23.3 longitude : 113.33 ];
    CLLocation *locationEnd = [[ CLLocation alloc ] initWithLatitude : 40.60 longitude : 117.78 ];
    // 计算距离调用方法
    CLLocationDistance distance  = [location distanceFromLocation :locationEnd];
    NSLog ( @"distance =======  %f" ,distance);
   
   
   
   
   
}

-( void )locationManager:( CLLocationManager *)manager didUpdateLocations:( NSArray < CLLocation *> *)locations{
   
    // 获取用户位置的对象
    CLLocation *location = [locations lastObject ];
    CLLocationCoordinate2D coordinate = location. coordinate ;
    NSLog ( @" 经度 : %f, 纬度 : %f" ,coordinate. latitude ,coordinate. longitude );
    // 停止定位
    [ self . manger stopUpdatingLocation ];
   
}

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

@end