iOS定位获取经纬度以及计算位置

//
//  ViewController.m
//  map
//
//  Created by mac on 15/7/23.
//  Copyright (c) 2015年 xin. All rights reserved.
//

#import "ViewController.h"
#import <CoreLocation/CoreLocation.h>

@interface ViewController ()<CLLocationManagerDelegate>
@property (nonatomic, strong)CLLocationManager *locMar;
@end

@implementation ViewController

- (CLLocationManager *)locMar{

if (_locMar == nil) {
self.locMar = [[CLLocationManager alloc] init];
self.locMar.delegate = self;
}
return _locMar;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.

if ([CLLocationManager locationServicesEnabled]) {

[self.locMar startUpdatingLocation];
self.locMar.distanceFilter = kCLDistanceFilterNone;
self.locMar.desiredAccuracy = kCLLocationAccuracyBestForNavigation;
[_locMar startUpdatingLocation];
if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0){

[_locMar requestWhenInUseAuthorization];  //调用了这句,就会弹出允许框了.

}
}else{
NSLog(@"打开权限");
}

[self countDistance];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{

CLLocation *loc = [locations firstObject];

NSLog(@"纬度=%f，经度=%f",loc.coordinate.latitude,loc.coordinate.longitude);

}

//计算两个位置之间的距离
-(void)countDistance
{
//根据经纬度创建两个位置对象
CLLocation *loc1=[[CLLocation alloc]initWithLatitude:40 longitude:116];
CLLocation *loc2=[[CLLocation alloc]initWithLatitude:41 longitude:116];
//计算两个位置之间的距离
CLLocationDistance distance=[loc1 distanceFromLocation:loc2];
NSLog(@"(%@)和(%@)的距离=%fM",loc1,loc2,distance);
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}

@end