IOS 城市定位详解及简单实例

_locationManger = [[CLLocationManager alloc] init]; 
_locationManger.delegate = self; 
[_locationManger requestAlwaysAuthorization];//iOS8需要加上，不然定位失败 
_locationManger.desiredAccuracy = kCLLocationAccuracyBest;  //最精确模式 
_locationManger.distanceFilter = 100.0f; //至少10米才请求一次数据 
[_locationManger startUpdatingLocation]; //开始定位 

- (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{ 
  NSLog(@"定位失败"); 
  [_locationManger stopUpdatingLocation];//关闭定位 
} 
 
- (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{ 
NSLog(@"定位成功"); 
[_locationManger stopUpdatingLocation];//关闭定位 
 
CLLocation *newLocation = locations[0]; 
NSLog(@"%@",[NSString stringWithFormat:@"经度:%3.5f\n纬度:%3.5f",newLocation.coordinate.latitude, newLocation.coordinate.longitude]); 
 
// 保存 设备 的当前语言 
NSMutableArray *userDefaultLanguages = [[NSUserDefaults standardUserDefaults] objectForKey:@"AppleLanguages"]; 
// 强制 成 简体中文 
[[NSUserDefaults standardUserDefaults] setObject:[NSArray arrayWithObjects:@"zh-hans", nil nil] forKey:@"AppleLanguages"]; 
CLGeocoder * geoCoder = [[CLGeocoder alloc] init]; 
[geoCoder reverseGeocodeLocation:newLocation completionHandler:^(NSArray *placemarks, NSError *error) { 
  for (CLPlacemark * placemark in placemarks) { 
 
    NSDictionary *test = [placemark addressDictionary]; 
    // Country(国家) State(城市) SubLocality(区) 
    NSLog(@"%@", [test objectForKey:@"State"]); 
 
    // 当前设备 在强制将城市改成 简体中文 后再还原之前的语言 
    [[NSUserDefaults standardUserDefaults] setObject:userDefaultLanguages forKey:@"AppleLanguages"]; 
  } 
}];   
}