iOS定位操作

Posted 2021-04-18 平台开发

ios定位操作

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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: