导入百度SDK

注：自iOS8起，系统定位功能进行了升级，SDK为了实现最新的适配，自v2.5.0起也做了相应的修改，开发者在使用定位功能之前，需要在info.plist里添加（以下二选一，两个都添加默认使用NSLocationWhenInUseUsageDescription）：

NSLocationWhenInUseUsageDescription ，允许在前台使用时获取GPS的描述

NSLocationAlwaysUsageDescription ，允许永久使用GPS的描述

//  
//  ViewController.m  
//  SwalleMap  
//  
//  Created by dev on 16/6/1.  
//  Copyright © 2016年 SWALLE. All rights reserved.  
//  
  
#import "ViewController.h"  
#import "UIView+Extension.h"  
#import <BaiduMapAPI_Base/BMKBaseComponent.h>//引入base相关所有的头文件  
  
#import <BaiduMapAPI_Map/BMKMapComponent.h>//引入地图功能所有的头文件  
  
#import <BaiduMapAPI_Search/BMKSearchComponent.h>//引入检索功能所有的头文件  
  
#import <BaiduMapAPI_Cloud/BMKCloudSearchComponent.h>//引入云检索功能所有的头文件  
  
#import <BaiduMapAPI_Location/BMKLocationComponent.h>//引入定位功能所有的头文件  
  
#import <BaiduMapAPI_Utils/BMKUtilsComponent.h>//引入计算工具所有的头文件  
  
#import <BaiduMapAPI_Radar/BMKRadarComponent.h>//引入周边雷达功能所有的头文件  
  
#import <BaiduMapAPI_Map/BMKMapView.h>//只引入所需的单个头文件  
  
@interface ViewController ()<BMKMapViewDelegate,BMKLocationServiceDelegate,BMKGeoCodeSearchDelegate>  
{  
    BMKPinAnnotationView *newAnnotation;  
      
    BMKGeoCodeSearch *_geoCodeSearch;  
      
    BMKReverseGeoCodeOption *_reverseGeoCodeOption;  
      
      
}  
@property (nonatomic, strong) BMKLocationService *localService;  
@property (weak, nonatomic) UIButton *mapPin;  
@end  
  
@implementation ViewController  
-(BMKLocationService *)localService{  
    if (!_localService) {  
        _localService = [[BMKLocationService alloc] init];  
        [_localService setDesiredAccuracy:kCLLocationAccuracyBest];//设置定位精度  
    }  
    return _localService;  
}  
- (void)viewDidLoad {  
    [super viewDidLoad];  
     
    self.mapView = [[BMKMapView alloc] initWithFrame:self.view.frame];  
    self.mapPin = [UIButton buttonWithType:UIButtonTypeSystem];//大头针  
    self.mapPin.width = 40;  
    self.mapPin.height = 80;  
    self.mapPin.center = self.mapView.center;  
    [self.mapPin setBackgroundImage:[UIImage imageNamed:@"serach_Map"] forState:UIControlStateNormal];  
    self.mapPin.backgroundColor = [UIColor greenColor];  
    [self.mapView addSubview:self.mapPin];  
    [self.view addSubview:self.mapView];  
    self.mapView.zoomLevel=17;//比例尺  
    [self.mapView setMapType:BMKMapTypeStandard];//地图类型  
    self.mapView.delegate = self;  
    self.mapView.userTrackingMode = BMKUserTrackingModeFollow;//设置定位的状态  
    self.mapView.showsUserLocation = YES;//显示定位图层  
    self.localService.delegate = self;  
    [self.localService startUserLocationService];//用户开始定位  
      
    //self.mapView.showsUserLocation = NO;//先关闭显示的定位图层  
    self.mapView.userTrackingMode = BMKUserTrackingModeFollow;//设置定位的状态  
    self.mapView.showsUserLocation = YES;//显示定位图层  
    [self.mapView bringSubviewToFront:self.mapPin];  
  
  
}  
#pragma mark -- BMKLocationServiceDelegate  
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation  
{  
    self.mapView.showsUserLocation = YES;//显示定位图层  
    //设置地图中心为用户经纬度  
    [self.mapView updateLocationData:userLocation];  
      
      
    //    _mapView.centerCoordinate = userLocation.location.coordinate;  
    BMKCoordinateRegion region ;//表示范围的结构体  
    region.center = self.mapView.centerCoordinate;//中心点  
    region.span.latitudeDelta = 0.004;//经度范围（设置为0.1表示显示范围为0.2的纬度范围）  
    region.span.longitudeDelta = 0.004;//纬度范围  
    [self.mapView setRegion:region animated:YES];  
      
}  
#pragma mark -- BMKMapViewDelegate  
- (void)mapView:(BMKMapView *)mapView regionDidChangeAnimated:(BOOL)animated  
{  
    //屏幕坐标转地图经纬度  
    CLLocationCoordinate2D MapCoordinate=[_mapView convertPoint:_mapPin.center toCoordinateFromView:_mapView];  
    NSLog(@"latitude == %f longitude == %f",MapCoordinate.latitude,MapCoordinate.longitude);  
    if (_geoCodeSearch==nil) {  
        //初始化地理编码类  
        _geoCodeSearch = [[BMKGeoCodeSearch alloc]init];  
        _geoCodeSearch.delegate = self;  
          
    }  
    if (_reverseGeoCodeOption==nil) {  
          
        //初始化反地理编码类  
        _reverseGeoCodeOption= [[BMKReverseGeoCodeOption alloc] init];  
    }  
      
    //需要逆地理编码的坐标位置  
    _reverseGeoCodeOption.reverseGeoPoint =MapCoordinate;  
    [_geoCodeSearch reverseGeoCode:_reverseGeoCodeOption];  
      
    //创建地理编码对象  
    CLGeocoder *geocoder=[[CLGeocoder alloc]init];  
    //创建位置  
    CLLocation *location=[[CLLocation alloc]initWithLatitude:MapCoordinate.latitude longitude:MapCoordinate.longitude];  
      
    //反地理编码  
    [geocoder reverseGeocodeLocation:location completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {  
        //判断是否有错误或者placemarks是否为空  
        if (error !=nil || placemarks.count==0) {  
            NSLog(@"%@",error);  
            return ;  
        }  
        for (CLPlacemark *placemark in placemarks) {  
            //赋值详细地址  
            NSLog(@"%@",placemark.name);  
        }  
    }];  
}  
#pragma mark -- BMKGeoCodeSearchDelegate  
//周边信息  
- (void)onGetReverseGeoCodeResult:(BMKGeoCodeSearch *)searcher result:(BMKReverseGeoCodeResult *)result errorCode:(BMKSearchErrorCode)error{  
    for (BMKPoiInfo *poi in result.poiList) {  
        NSLog(@"%@",poi.name);//周边建筑名  
        NSLog(@"%d",poi.epoitype);  
          
    }  
}  
@end