IOS定位操作

簡介

在IOS中通過CoreLocation定位，可以獲取到用戶當前位置，同時能得到裝置移動信息。

實例步驟

1、創(chuàng)建一個簡單的View based application（視圖應用程序）。

2、擇項目文件，然后選擇目標，然后添加CoreLocation.framework,如下所示

3、在ViewController.xib中添加兩個標簽，創(chuàng)建ibOutlet名為latitudeLabel和longtitudeLabel的標簽

4、現(xiàn)在通過選擇" File-> New -> File... -> "選擇Objective C class 并單擊下一步

5、把"sub class of"作為NSObject，將類命名為LocationHandler

6、選擇創(chuàng)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

輸出

當我們運行該應用程序，會得到如下的輸出: