标签:
1、使用CLGeocoder可以完成“地理编码”和“反地理编码”
(1)地理编码:根据给定的地名,获得具体的位置信息(比如经纬度、地址的全称等)
(2)反地理编码:根据给定的经纬度,获得具体的位置信息
2、地理编码方法
(1)编码
- (void)geocodeAddressString:(NSString *)addressString completionHandler:(CLGeocodeCompletionHandler)completionHandler;
(2)反编码
- (void)reverseGeocodeLocation:(CLLocation *)location completionHandler:(CLGeocodeCompletionHandler)completionHandler;
3、CLGeocodeCompletionHandler
(1)当地理\反地理编码完成时,就会调用CLGeocodeCompletionHandler
typedef void (^CLGeocodeCompletionHandler)(NSArray *placemarks, NSError *error);
(2)这个block传递2个参数
error :当编码出错时(比如编码不出具体的信息)有值
placemarks :里面装着CLPlacemark对象
4、CLPlacemark的字面意思是地标,封装详细的地址位置信息
(1)地理位置
@property (nonatomic, readonly) CLLocation *location;
(2)区域
@property (nonatomic, readonly) CLRegion *region;
(3)详细的地址信息
@property (nonatomic, readonly) NSDictionary *addressDictionary;
(4)地址名称
@property (nonatomic, readonly) NSString *name;
(5)城市
@property (nonatomic, readonly) NSString *locality;
5、示例代码
#import "ViewController.h" #import <CoreLocation/CoreLocation.h> @interface ViewController () @property (nonatomic, strong) CLGeocoder *geocode; @end @implementation ViewController #pragma mark - 懒加载 - (CLGeocoder *)geocode { if (!_geocode) { _geocode = [[CLGeocoder alloc]init]; } return _geocode; } - (IBAction)geoCodeClick:(UIButton *)sender { //北京 经纬度 [self.geocode geocodeAddressString:@"东莞" completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) { //地标 CLPlacemark *pl = [placemarks firstObject]; //经纬度 CLLocationCoordinate2D coordinate = pl.location.coordinate; NSLog(@"%f %f",coordinate.latitude,coordinate.longitude); for ( CLPlacemark *pl in placemarks) { NSLog(@"%@",pl.name); } }]; } - (IBAction)unGeoClick:(UIButton *)sender { CLLocation *loction = [[CLLocation alloc]initWithLatitude:23 longitude:118]; [self.geocode reverseGeocodeLocation:loction completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) { //地址 字符串 NSLog(@"%@",error); CLPlacemark *pl = [placemarks firstObject]; NSLog(@"%@,%@",pl.name,pl.locality); }]; } @end
标签:
原文地址:http://www.cnblogs.com/cleven/p/5432240.html