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

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-> New -> File... -> "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:

iOS定位操作 - IOS教程

IOS定位操作

简介

实例步骤

输出