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
#import
@protocol LocationHandlerDelegate
@required
-(void) didUpdateToLocation:(CLLocation*)newLocation
fromLocation:(CLLocation*)oldLocation;
@end
@interface LocationHandler : NSObject{
CLLocationManager *locationManager;}@property(nonatomic,strong)
id
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
#import "LocationHandler.h"
@interface ViewController : UIViewController{
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