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# IOS定位操作 ## 简介 在IOS中通过CoreLocation定位,可以获取到用户当前位置,同时能得到装置移动信息。 ### 实例步骤 1、创建一个简单的View based application(视图应用程序)。 2、择项目文件,然后选择目标,然后添加CoreLocation.framework,如下所示 ![CoreLocation_Library_Addition](https://box.kancloud.cn/2015-12-13_566ce8a311469.jpg) 3、在ViewController.xib中添加两个标签,创建ibOutlet名为latitudeLabel和longtitudeLabel的标签 4、现在通过选择" File-&gt; New -&gt; File... -&gt; "选择Objective C class 并单击下一步 5、把"sub class of"作为NSObject,将类命名为LocationHandler 6、选择创建 7、更新LocationHandler.h,如下所示 ``` #import <Foundation/Foundation.h> #import <CoreLocation/CoreLocation.h> @protocol LocationHandlerDelegate <NSObject> @required -(void) didUpdateToLocation:(CLLocation*)newLocation fromLocation:(CLLocation*)oldLocation; @end @interface LocationHandler : NSObject<CLLocationManagerDelegate> { CLLocationManager *locationManager; } @property(nonatomic,strong) id<LocationHandlerDelegate> delegate; +(id)getSharedInstance; -(void)startUpdating; -(void) stopUpdating; @end ``` 8、更新LocationHandler.m,如下所示 ``` #import "LocationHandler.h" static LocationHandler *DefaultManager = nil; @interface LocationHandler() -(void)initiate; @end @implementation LocationHandler +(id)getSharedInstance{ if (!DefaultManager) { DefaultManager = [[self allocWithZone:NULL]init]; [DefaultManager initiate]; } return DefaultManager; } -(void)initiate{ locationManager = [[CLLocationManager alloc]init]; locationManager.delegate = self; } -(void)startUpdating{ [locationManager startUpdatingLocation]; } -(void) stopUpdating{ [locationManager stopUpdatingLocation]; } -(void)locationManager:(CLLocationManager *)manager didUpdateToLocation: (CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ if ([self.delegate respondsToSelector:@selector (didUpdateToLocation:fromLocation:)]) { [self.delegate didUpdateToLocation:oldLocation fromLocation:newLocation]; } } @end ``` 9、更新ViewController.h,如下所示 ``` #import <UIKit/UIKit.h> #import "LocationHandler.h" @interface ViewController : UIViewController<LocationHandlerDelegate> { IBOutlet UILabel *latitudeLabel; IBOutlet UILabel *longitudeLabel; } @end ``` 10、更新ViewController.m,如下所示 ``` #import "ViewController.h" @interface ViewController () @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; [[LocationHandler getSharedInstance]setDelegate:self]; [[LocationHandler getSharedInstance]startUpdating]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } -(void)didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation{ [latitudeLabel setText:[NSString stringWithFormat: @"Latitude: %f",newLocation.coordinate.latitude]]; [longitudeLabel setText:[NSString stringWithFormat: @"Longitude: %f",newLocation.coordinate.longitude]]; } @end ``` ### 输出 当我们运行该应用程序,会得到如下的输出: ![locationOutput](https://box.kancloud.cn/2015-12-13_566ce8a39e62f.jpg)