在iOS開發中自動擷取當前的位置(GPS定位）

在iOS開發中自動擷取當前的位置(GPS定位)

 

 

 

開發環境 xcode5.0

 

首先我們要引入這個架構CoreLocation.framework

將這個庫引進來#import

還有他的代理方法 CLLocationManagerDelegate

 

 

GPSViewController.h

注意這裡的CLLocationManager* locationmanager要設定成全域變數，要不然得不到你想要的結果哦！具體為什麼，我現在還不清楚

 

#import #import @interface GPSViewController : UIViewController@property(nonatomic,retain) CLLocationManager* locationmanager;@end

GPSViewController.m

 

 

#import GPSViewController.h@interface GPSViewController ()@end@implementation GPSViewController@synthesize locationmanager;- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];// Do any additional setup after loading the view.    locationmanager = [[CLLocationManager alloc]init];        //設定精度    /*     kCLLocationAccuracyBest     kCLLocationAccuracyNearestTenMeters     kCLLocationAccuracyHundredMeters     kCLLocationAccuracyHundredMeters     kCLLocationAccuracyKilometer     kCLLocationAccuracyThreeKilometers     */    //設定定位的精度    [locationmanager setDesiredAccuracy:kCLLocationAccuracyBest];    //實現協議    locationmanager.delegate = self;    NSLog(@開始定位);    //開始定位    [locationmanager startUpdatingLocation];   }

#pragma mark locationManager delegate - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation { NSLog(@hello); //列印出精度和緯度 CLLocationCoordinate2D coordinate = newLocation.coordinate; NSLog(@輸出當前的精度和緯度); NSLog(@精度：%f 緯度：%f,coordinate.latitude,coordinate.longitude); //停止定位 [locationmanager stopUpdatingLocation]; //計算兩個位置的距離 float distance = [newLocation distanceFromLocation:oldLocation]; NSLog(@ 距離 %f,distance); } @end