ios地图与定位的简单使用

实现地图、导航功能，往往需要先熟悉定位功能，在iOS中通过Core Location框架进行定位操作。Core Location自身可以单独使用，和地图开发框架MapKit完全是独立的，但是往往地图开发要配合定位框架使用。在Core Location中主要包含了定位、地理编码（包括反编码）功能。

代码如下:

#import \"ViewController.h\"#import <CoreLocation/CoreLocation.h>@interface ViewController ()<CLLocationManagerDelegate>/**声明全局变量(记住原因)  要懒加载**/@property(nonatomic,strong)CLLocationManager *LM;@end@implementation ViewController {CLLocation  *_location;}//懒加载-(CLLocationManager *)LM {if (!_LM) {_LM = [[CLLocationManager alloc]init];//代理_LM.delegate = self;[_LM requestAlwaysAuthorization];_LM.distanceFilter = 0.1;//定位最准确,耗电最快_LM.desiredAccuracy = kCLLocationAccuracyBest;}return _LM;}- (void)viewDidLoad {[super viewDidLoad];}//手势点击更新定位-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent     *)event{[self.LM startUpdatingLocation];}//代理事件-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray<CLLocation *> *)locations{CLLocation *locationsw= [locations firstObject];//    NSLog(@\"%@\",locationsw);/* 例如:”北偏东30度方向,移动了8米”实现步骤:1> 获取对应的方向偏向(例如”正东””东偏南”)2> 获取对应的偏离角度(并判断是否是正方向)3> 计算行走距离4> 打印信息*/NSString *course = nil;switch ((int)locationsw.course /90) {case 0:course = @\"北偏东 \";break;case 1:course = @\"东偏南\";break;case 2:course = @\"南偏西\";break;case 3:course = @\"西偏北\";default:break;}//度数NSString *degree = nil;degree = [NSString stringWithFormat:@\"%d度\",(int)locationsw.course%90];//距离NSString *distant = nil;if (_location) {distant = [NSString stringWithFormat:@\"%f\",[locationsw distanceFromLocation:_location]];}_location  =locationsw;NSLog(@\"xiaoming %@%@移动%@\",course,degree,distant);}