iOS 8 实现获取当前定位信息

//
//  ViewController.m
//  LocationDemo
//
//  Created by LaughingZhong on 14/11/12.
//  Copyright (c) 2014年 Laughing. All rights reserved.
//
import "ViewController.h"
@interface ViewController ()
@end
@implementation ViewController
@synthesize myLocationManager,myGeocoder,myLocation;

(void)dealloc
{
  self.myLocationManager = nil;
  self.myLocation = nil;
  self.myGeocoder = nil;
}

(void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view from its nib.
  if ([CLLocationManager locationServicesEnabled]) {

  self.myLocationManager = [[CLLocationManager alloc] init];
  [self.myLocationManager setDelegate:self];
  self.myLocationManager.desiredAccuracy = kCLLocationAccuracyBest;
  self.myLocationManager.distanceFilter = 1.0;

//        [self.myLocationManager requestAlwaysAuthorization];

  [self.myLocationManager requestWhenInUseAuthorization];
  [self.myLocationManager startUpdatingLocation];

}else {

  NSLog(@"Location services are not enabled");

}
}

(void)didReceiveMemoryWarning {
  [super didReceiveMemoryWarning];
  // Dispose of any resources that can be recreated.
}


pragma mark -
pragma mark CLLocationManagerDelegate

(void)locationManager:(CLLocationManager )manager didUpdateLocations:(NSArray )locations
{
  NSLog(@"locations is %@",locations);
  CLLocation location = [locations lastObject];
  self.myGeocoder = [[CLGeocoder alloc] init];
  [self.myGeocoder reverseGeocodeLocation:location completionHandler:^(NSArray placemarks, NSError *error)
   {

   if(error == nil && [placemarks count]>0)
   {
       CLPlacemark *placemark = [placemarks objectAtIndex:0];

       NSLog(@"name = %@",placemark.name);
       NSLog(@"Country = %@", placemark.country);
       NSLog(@"Postal Code = %@", placemark.postalCode);
       NSLog(@"locality = %@", placemark.locality);
       NSLog(@"subLocality = %@", placemark.subLocality);
       NSLog(@"address = %@",placemark.name);
       NSLog(@"administrativeArea = %@",placemark.administrativeArea);
       NSLog(@"subAdministrativeArea = %@",placemark.subAdministrativeArea);
       NSLog(@"ISOcountryCode = %@",placemark.ISOcountryCode);
       NSLog(@"thoroughfare = %@", placemark.thoroughfare);
       NSLog(@"subThoroughfare = %@",placemark.subThoroughfare);

       [label setText:[NSString stringWithFormat:@"address is: %@",placemark.name]];
   }
   else if(error==nil && [placemarks count]==0){
       NSLog(@"No results were returned.");
   }
   else if(error != nil) {
       NSLog(@"An error occurred = %@", error);
   }

}];
  [self.myLocationManager stopUpdatingLocation];
}

(void)locationManager:(CLLocationManager )manager didFailWithError:(NSError )error
{
  NSLog(@"reverse geocoder error: %@", [error description]);
}


@end</pre>