ios地图 反地理编码 ios百度地图的使用（普通定位、反地理编码）

#import <CoreLocation/CoreLocation.h> 使用到的头文件 要引入CoreLocation这个包
<CLLocationManagerDelegate>    使用的代理名称
//1.使用定位服务
 //设置app有访问定位服务的权限
 //在使用应用期间 / 始终(app在后台)
 //info.plist文件添加以下两条(或者其中一条):
 //NSLocationWhenInUseUsageDescription 在使用应用期间
 //NSLocationAlwaysUsageDescription 始终
 //2.LocationManager 对象管理相关的定位服务
 _manager = [[CLLocationManager alloc] init];
 //manager判断: 手机是否开启定位 / app是否有访问定位的权限
 //[CLLocationManager locationServicesEnabled]; //手机是否开启定位
 //[CLLocationManager authorizationStatus]; //app访问定位的权限的状态
 if (![CLLocationManager locationServicesEnabled] || [CLLocationManager authorizationStatus] != kCLAuthorizationStatusAuthorizedWhenInUse) {
  [_manager requestWhenInUseAuthorization]; //向用户请求访问定位服务的权限
 }
 _manager.delegate = self;
 _manager.desiredAccuracy = kCLLocationAccuracyBest;
 _manager.distanceFilter = 1.0f;
 [_manager startUpdatingLocation];
//定位代理经纬度回调
-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation {
 [_manager stopUpdatingLocation];
 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) Name全称
   NSLog(@"%@", [test objectForKey:@"Name"]);
  }
 }];
}

_mapView = [[BMKMapView alloc]initWithFrame:CGRectMake(0, 0,self.view.frame.size.width, self.view.frame.size.height)];//添加mapVIew
 [self.view addSubview:_mapView];
#pragma mark - 设置mapView属性
-(void)setMapViewProperty
{
 _mapView.mapType = BMKUserTrackingModeFollowWithHeading;
 _mapView.showsUserLocation = YES; //是否显示定位图层（即我的位置的小圆点）
 _mapView.zoomLevel = 16;//地图显示比例
 _mapView.rotateEnabled = NO; //设置是否可以旋转
  
 [self passLocationValue];
}
#pragma mark -传入定位坐标 
//设置定位到得用户的位置，这里是简单的应用方法（必须打开程序时已经获取到地理位置坐标，为了解决地图定位时总是先显示天安门）
-(void)passLocationValue
{
 BMKCoordinateRegion viewRegion = BMKCoordinateRegionMake([UserLocationManager sharedInstance].clloction.coordinate, BMKCoordinateSpanMake(0.02f,0.02f));
 BMKCoordinateRegion adjustedRegion = [_mapView regionThatFits:viewRegion];
 [_mapView setRegion:adjustedRegion animated:YES];
  
}
#pragma mark -设置定位圆点属性
-(void)setUserImage
{
 //用户位置类
 BMKLocationViewDisplayParam* param = [[BMKLocationViewDisplayParam alloc] init];
 param.locationViewOffsetY = 0;//偏移量
 param.locationViewOffsetX = 0;
 param.isAccuracyCircleShow =NO;//设置是否显示定位的那个精度圈
 param.isRotateAngleValid = NO;
 [_mapView updateLocationViewWithParam:param];
}

**
 *地图区域即将改变时会调用此接口
 *@param mapview 地图View
 *@param animated 是否动画
 */
- (void)mapView:(BMKMapView *)mapView regionWillChangeAnimated:(BOOL)animated
{
 //TODO
}
 
/**
 *地图区域改变完成后会调用此接口
 *@param mapview 地图View
 *@param animated 是否动画
 */
- (void)mapView:(BMKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
{
 //TODO
}
/**
 *地图状态改变完成后会调用此接口
 *@param mapview 地图View
 */
- (void)mapStatusDidChanged:(BMKMapView *)mapView
{
 //TODO
}

#import <Foundation/Foundation.h>
#import "BMapKit.h"
@interface UserLocationManager : NSObject <BMKMapViewDelegate,BMKLocationServiceDelegate>
{
 CLLocation *cllocation;
 BMKReverseGeoCodeOption *reverseGeoCodeOption;//逆地理编码
}
@property (strong,nonatomic) BMKLocationService *locService;
//城市名
@property (strong,nonatomic) NSString *cityName;
//用户纬度
@property (nonatomic,assign) double userLatitude;
//用户经度
@property (nonatomic,assign) double userLongitude;
//用户位置
@property (strong,nonatomic) CLLocation *clloction;
//初始化单例
+ (UserLocationManager *)sharedInstance;
//初始化百度地图用户位置管理类
- (void)initBMKUserLocation;
//开始定位
-(void)startLocation;
//停止定位
-(void)stopLocation;
@end
#import "UserLocationManager.h"
@implementation UserLocationManager
+ (UserLocationManager *)sharedInstance
{
 static UserLocationManager *_instance = nil;
 @synchronized (self) {
  if (_instance == nil) {
   _instance = [[self alloc] init];
  }
 }
 return _instance;
}
-(id)init
{
 if (self == [super init])
 {
  [self initBMKUserLocation];
 }
 return self;
}
#pragma 初始化百度地图用户位置管理类
/**
 * 初始化百度地图用户位置管理类
 */
- (void)initBMKUserLocation
{
 _locService = [[BMKLocationService alloc]init];
 _locService.delegate = self;
 [self startLocation];
}
#pragma 打开定位服务
/**
 * 打开定位服务
 */
-(void)startLocation
{
 [_locService startUserLocationService];
}
#pragma 关闭定位服务
/**
 * 关闭定位服务
 */
-(void)stopLocation
{
 [_locService stopUserLocationService];
}
#pragma BMKLocationServiceDelegate
/**
 *用户位置更新后，会调用此函数
 *@param userLocation 新的用户位置
 */
- (void)didUpdateUserLocation:(BMKUserLocation *)userLocation
{
  cllocation = userLocation.location;
 _clloction = cllocation;
 _userLatitude = cllocation.coordinate.latitude;
 _userLongitude = cllocation.coordinate.longitude;
 [self stopLocation];(如果需要实时定位不用停止定位服务)
}
/**
 *在停止定位后，会调用此函数
 */
- (void)didStopLocatingUser
{
；
}
/**
 *定位失败后，会调用此函数
 *@param error 错误号
 */
- (void)didFailToLocateUserWithError:(NSError *)error
{
 [self stopLocation];
}