iOS8之前與iOS8使用CoreLocation定位

 
iOS8之前使用CoreLocation定位一、首先定義一個全局的變量用來記錄CLLocationManager對象,引入CoreLocation.framework使用#import <CoreLocation/CoreLocation.h>1    @property (nonatomic, strong) CLLocationManager  *locationManager;    二、初始化CLLocationManager並開始定位 -(CLLocationManager *)locationManager{     #warning 定位服務不可用,直接返回空  if (![CLLocationManager locationServicesEnabled]) return nil;        if (!_locationManager) {        //建立定位者        self.locationManager = [[CLLocationManager alloc]init];        //設置代理        self.locationManager.delegate = self;    }    return _locationManager;}- (void)viewDidLoad {[super viewDidLoad];    self.view.backgroundColor = [UIColor whiteColor];    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;    self.locationManager.distanceFilter = 10;    [self.locationManager startUpdatingLocation];}    三、實現CLLocationManagerDelegate的代理方法(1)獲取到位置數據,返回的是一個CLLocation的數組,通常使用其中的一個    - (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{    CLLocation *currLocation = [locations lastObject];    NSLog(@"經度=%f 緯度=%f 高度=%f", currLocation.coordinate.latitude, currLocation.coordinate.longitude, currLocation.altitude);}    (2)獲取用戶位置數據失敗的回調方法,在此通知用戶- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{    if ([error code] == kCLErrorDenied)    {        //訪問被拒絕    }    if ([error code] == kCLErrorLocationUnknown) {        //沒法獲取位置信息    }}    四、在viewWillDisappear關閉定位    - (void)viewWillDisappear:(BOOL)animated{    [super viewWillDisappear:animated];    [_locationManager stopUpdatingLocation];}    iOS8中使用CoreLocation定位一、在使用CoreLocation前須要調用以下函數【iOS8專用】:iOS8對定位進行了一些修改,其中包括定位受權的方法,CLLocationManager增長了下面的兩個方法:(1)始終容許訪問位置信息- (void)requestAlwaysAuthorization;(2)使用應用程序期間容許訪問位置數據- (void)requestWhenInUseAuthorization;示例以下: - (void)viewDidLoad {[super viewDidLoad];    self.view.backgroundColor = [UIColor whiteColor];       self.locMgr.desiredAccuracy = kCLLocationAccuracyBest;    self.locMgr.distanceFilter = 10;       #warning 定位服務,ios8之後添加這句    [self.locMgr requestAlwaysAuthorization];        [self.locMgr startUpdatingLocation];}    二、在Info.plist文件中添加以下配置:(1)NSLocationAlwaysUsageDescription(2)NSLocationWhenInUseUsageDescription
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