////  02-地理编码////  Created by apple on 14-8-7.//  Copyright (c) 2014年 CoderJee. All rights reserved.//#import "HMViewController.h"#import 
     
      @interface HMViewController ()@property (nonatomic, strong) CLGeocoder *geocoder;#pragma mark - 地理编码- (IBAction)geocode;@property (weak, nonatomic) IBOutlet UITextField *addressField;@property (weak, nonatomic) IBOutlet UILabel *longitudeLabel;@property (weak, nonatomic) IBOutlet UILabel *latitudeLabel;@property (weak, nonatomic) IBOutlet UILabel *detailAddressLabel;#pragma mark - 反地理编码- (IBAction)reverseGeocode;@property (weak, nonatomic) IBOutlet UITextField *longtitudeField;@property (weak, nonatomic) IBOutlet UITextField *latitudeField;@property (weak, nonatomic) IBOutlet UILabel *reverseDetailAddressLabel;@end@implementation HMViewController- (CLGeocoder *)geocoder{    if (!_geocoder) {        self.geocoder = [[CLGeocoder alloc] init];    }    return _geocoder;} - (void)viewDidLoad{    [super viewDidLoad];    }/** *  地理编码：地名 -> 经纬度 */- (void)geocode{    // 1.获得输入的地址xx    NSString *address = self.addressField.text;    if (address.length == 0) return;        // 2.开始编码    [self.geocoder geocodeAddressString:address completionHandler:^(NSArray *placemarks, NSError *error) {        if (error || placemarks.count == 0) {            self.detailAddressLabel.text = @"你输入的地址找不到，可能在火星上";        } else { // 编码成功（找到了具体的位置信息）            // 输出查询到的所有地标信息            for (CLPlacemark *placemark in placemarks) {                // 名字, 城市，国家，邮政编码                NSLog(@"name=%@ locality=%@ country=%@ postalCode=%@", placemark.name, placemark.locality, placemark.country, placemark.postalCode);            }                        // 显示最前面的地标信息            CLPlacemark *firstPlacemark = [placemarks firstObject];            self.detailAddressLabel.text = firstPlacemark.name;            // 纬度            CLLocationDegrees latitude = firstPlacemark.location.coordinate.latitude;            // 经度            CLLocationDegrees longitude = firstPlacemark.location.coordinate.longitude;            self.latitudeLabel.text = [NSString stringWithFormat:@"%.2f", latitude];            self.longitudeLabel.text = [NSString stringWithFormat:@"%.2f", longitude];        }    }];}/** *  反地理编码：经纬度 -> 地名 */- (void)reverseGeocode{    NSString *longtitudeText = self.longtitudeField.text;    NSString *latitudeText = self.latitudeField.text;    if (longtitudeText.length == 0 || latitudeText.length == 0) return;        CLLocationDegrees latitude = [latitudeText doubleValue];    CLLocationDegrees longtitude = [longtitudeText doubleValue];        // 开始反向编码    CLLocation *location = [[CLLocation alloc] initWithLatitude:latitude longitude:longtitude];    [self.geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {        if (error || placemarks.count == 0) {            self.reverseDetailAddressLabel.text = @"你输入的经纬度找不到，可能在火星上";        } else { // 编码成功（找到了具体的位置信息）            // 输出查询到的所有地标信息            for (CLPlacemark *placemark in placemarks) {                NSLog(@"name=%@ locality=%@ country=%@ postalCode=%@", placemark.name, placemark.locality, placemark.country, placemark.postalCode);            }                        // 显示最前面的地标信息            CLPlacemark *firstPlacemark = [placemarks firstObject];            self.reverseDetailAddressLabel.text = firstPlacemark.name;                        CLLocationDegrees latitude = firstPlacemark.location.coordinate.latitude;            CLLocationDegrees longitude = firstPlacemark.location.coordinate.longitude;            self.latitudeField.text = [NSString stringWithFormat:@"%.2f", latitude];            self.longtitudeField.text = [NSString stringWithFormat:@"%.2f", longitude];        }    }];}- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event{    [self.view endEditing:YES];}@end