iOS开发系列--地图与定位源代码详解

//
// KCMainViewController.m
// CoreLocation
//
// Created by Kenshin Cui on 14-03-27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>

@interface KCMainViewController ()<CLLocationManagerDelegate>{

  CLLocationManager *_locationManager;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  //定位管理器
  _locationManager=[[CLLocationManager alloc]init];
  
  if (![CLLocationManager locationServicesEnabled]) {
    NSLog(@"定位服务当前可能尚未打开，请设置打开！");
    return;
  }
  
  //如果没有授权则请求用户授权
  if ([CLLocationManager authorizationStatus]==kCLAuthorizationStatusNotDetermined){
    [_locationManager requestWhenInUseAuthorization];
  }else if([CLLocationManager authorizationStatus]==kCLAuthorizationStatusAuthorizedWhenInUse){
    //设置代理
    _locationManager.delegate=self;
    //设置定位精度
    _locationManager.desiredAccuracy=kCLLocationAccuracyBest;
    //定位频率,每隔多少米定位一次
    CLLocationDistance distance=10.0;//十米定位一次
    _locationManager.distanceFilter=distance;
    //启动跟踪定位
    [_locationManager startUpdatingLocation];
  }
}

#pragma mark - CoreLocation 代理
#pragma mark 跟踪定位代理方法，每次位置发生变化即会执行（只要定位到相应位置）
//可以通过模拟器设置一个虚拟位置，否则在模拟器中无法调用此方法
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
  CLLocation *location=[locations firstObject];//取出第一个位置
  CLLocationCoordinate2D coordinate=location.coordinate;//位置坐标
  NSLog(@"经度：%f,纬度：%f,海拔：%f,航向：%f,行走速度：%f",coordinate.longitude,coordinate.latitude,location.altitude,location.course,location.speed);
  //如果不需要实时定位，使用完即使关闭定位服务
  [_locationManager stopUpdatingLocation];
}

@end

//
// KCMainViewController.m
// CoreLocation
//
// Created by Kenshin Cui on 14-03-27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>

@interface KCMainViewController ()<CLLocationManagerDelegate>{

  CLGeocoder *_geocoder;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  _geocoder=[[CLGeocoder alloc]init];
  [self getCoordinateByAddress:@"北京"];
  [self getAddressByLatitude:39.54 longitude:116.28];
}

#pragma mark 根据地名确定地理坐标
-(void)getCoordinateByAddress:(NSString *)address{
  //地理编码
  [_geocoder geocodeAddressString:address completionHandler:^(NSArray *placemarks, NSError *error) {
    //取得第一个地标，地标中存储了详细的地址信息，注意：一个地名可能搜索出多个地址
    CLPlacemark *placemark=[placemarks firstObject];
    
    CLLocation *location=placemark.location;//位置
    CLRegion *region=placemark.region;//区域
    NSDictionary *addressDic= placemark.addressDictionary;//详细地址信息字典,包含以下部分信息
//    NSString *name=placemark.name;//地名
//    NSString *thoroughfare=placemark.thoroughfare;//街道
//    NSString *subThoroughfare=placemark.subThoroughfare; //街道相关信息，例如门牌等
//    NSString *locality=placemark.locality; // 城市
//    NSString *subLocality=placemark.subLocality; // 城市相关信息，例如标志性建筑
//    NSString *administrativeArea=placemark.administrativeArea; // 州
//    NSString *subAdministrativeArea=placemark.subAdministrativeArea; //其他行政区域信息
//    NSString *postalCode=placemark.postalCode; //邮编
//    NSString *ISOcountryCode=placemark.ISOcountryCode; //国家编码
//    NSString *country=placemark.country; //国家
//    NSString *inlandWater=placemark.inlandWater; //水源、湖泊
//    NSString *ocean=placemark.ocean; // 海洋
//    NSArray *areasOfInterest=placemark.areasOfInterest; //关联的或利益相关的地标
    NSLog(@"位置:%@,区域:%@,详细信息:%@",location,region,addressDic);
  }];
}

#pragma mark 根据坐标取得地名
-(void)getAddressByLatitude:(CLLocationDegrees)latitude longitude:(CLLocationDegrees)longitude{
  //反地理编码
  CLLocation *location=[[CLLocation alloc]initWithLatitude:latitude longitude:longitude];
  [_geocoder reverseGeocodeLocation:location completionHandler:^(NSArray *placemarks, NSError *error) {
    CLPlacemark *placemark=[placemarks firstObject];
    NSLog(@"详细信息:%@",placemark.addressDictionary);
  }];
}

@end

//
// KCAnnotation.h
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface KCAnnotation : NSObject<MKAnnotation>

@property (nonatomic) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;

@end

//
// KCMainViewController.m
// MapKit Annotation
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
// 37.785834  -122.406417
// 39.92 116.39

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "KCAnnotation.h"

@interface KCMainViewController ()<MKMapViewDelegate>{
  CLLocationManager *_locationManager;
  MKMapView *_mapView;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self initGUI];
}

#pragma mark 添加地图控件
-(void)initGUI{
  CGRect rect=[UIScreen mainScreen].bounds;
  _mapView=[[MKMapView alloc]initWithFrame:rect];
  [self.view addSubview:_mapView];
  //设置代理
  _mapView.delegate=self;
  
  //请求定位服务
  _locationManager=[[CLLocationManager alloc]init];
  if(![CLLocationManager locationServicesEnabled]||[CLLocationManager authorizationStatus]!=kCLAuthorizationStatusAuthorizedWhenInUse){
    [_locationManager requestWhenInUseAuthorization];
  }
  
  //用户位置追踪(用户位置追踪用于标记用户当前位置，此时会调用定位服务)
  _mapView.userTrackingMode=MKUserTrackingModeFollow;
  
  //设置地图类型
  _mapView.mapType=MKMapTypeStandard;
  
  //添加大头针
  [self addAnnotation];
}

#pragma mark 添加大头针 
-(void)addAnnotation{
  CLLocationCoordinate2D location1=CLLocationCoordinate2DMake(39.95, 116.35);
  KCAnnotation *annotation1=[[KCAnnotation alloc]init];
  annotation1.title=@"CMJ Studio";
  annotation1.subtitle=@"Kenshin Cui's Studios";
  annotation1.coordinate=location1;
  [_mapView addAnnotation:annotation1];
  
  CLLocationCoordinate2D location2=CLLocationCoordinate2DMake(39.87, 116.35);
  KCAnnotation *annotation2=[[KCAnnotation alloc]init];
  annotation2.title=@"Kenshin&Kaoru";
  annotation2.subtitle=@"Kenshin Cui's Home";
  annotation2.coordinate=location2;
  [_mapView addAnnotation:annotation2];
}

#pragma mark - 地图控件代理方法
#pragma mark 更新用户位置，只要用户改变则调用此方法（包括第一次定位到用户位置）
-(void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation{
  
  NSLog(@"%@",userLocation);
  //设置地图显示范围(如果不进行区域设置会自动显示区域范围并指定当前用户位置为地图中心点)
  //  MKCoordinateSpan span=MKCoordinateSpanMake(0.01, 0.01);
  //  MKCoordinateRegion region=MKCoordinateRegionMake(userLocation.location.coordinate, span);
  //  [_mapView setRegion:region animated:true];
}

@end

//
// KCAnnotation.h
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface KCAnnotation : NSObject<MKAnnotation>

@property (nonatomic) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;

#pragma mark 自定义一个图片属性在创建大头针视图时使用
@property (nonatomic,strong) UIImage *image;

@end

//
// KCMainViewController.m
// MapKit Annotation
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
// 37.785834  -122.406417
// 39.92 116.39

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "KCAnnotation.h"

@interface KCMainViewController ()<MKMapViewDelegate>{
  CLLocationManager *_locationManager;
  MKMapView *_mapView;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self initGUI];
}

#pragma mark 添加地图控件
-(void)initGUI{
  CGRect rect=[UIScreen mainScreen].bounds;
  _mapView=[[MKMapView alloc]initWithFrame:rect];
  [self.view addSubview:_mapView];
  //设置代理
  _mapView.delegate=self;
  
  //请求定位服务
  _locationManager=[[CLLocationManager alloc]init];
  if(![CLLocationManager locationServicesEnabled]||[CLLocationManager authorizationStatus]!=kCLAuthorizationStatusAuthorizedWhenInUse){
    [_locationManager requestWhenInUseAuthorization];
  }
  
  //用户位置追踪(用户位置追踪用于标记用户当前位置，此时会调用定位服务)
  _mapView.userTrackingMode=MKUserTrackingModeFollow;
  
  //设置地图类型
  _mapView.mapType=MKMapTypeStandard;
  
  //添加大头针
  [self addAnnotation];
}

#pragma mark 添加大头针 
-(void)addAnnotation{
  CLLocationCoordinate2D location1=CLLocationCoordinate2DMake(39.95, 116.35);
  KCAnnotation *annotation1=[[KCAnnotation alloc]init];
  annotation1.title=@"CMJ Studio";
  annotation1.subtitle=@"Kenshin Cui's Studios";
  annotation1.coordinate=location1;
  annotation1.image=[UIImage imageNamed:@"icon_pin_floating.png"];
  [_mapView addAnnotation:annotation1];
  
  CLLocationCoordinate2D location2=CLLocationCoordinate2DMake(39.87, 116.35);
  KCAnnotation *annotation2=[[KCAnnotation alloc]init];
  annotation2.title=@"Kenshin&Kaoru";
  annotation2.subtitle=@"Kenshin Cui's Home";
  annotation2.coordinate=location2;
  annotation2.image=[UIImage imageNamed:@"icon_paopao_waterdrop_streetscape.png"];
  [_mapView addAnnotation:annotation2];
}

#pragma mark - 地图控件代理方法
#pragma mark 显示大头针时调用，注意方法中的annotation参数是即将显示的大头针对象
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation{
  //由于当前位置的标注也是一个大头针，所以此时需要判断，此代理方法返回nil使用默认大头针视图
  if ([annotation isKindOfClass:[KCAnnotation class]]) {
    static NSString *key1=@"AnnotationKey1";
    MKAnnotationView *annotationView=[_mapView dequeueReusableAnnotationViewWithIdentifier:key1];
    //如果缓存池中不存在则新建
    if (!annotationView) {
      annotationView=[[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:key1];
      annotationView.canShowCallout=true;//允许交互点击
      annotationView.calloutOffset=CGPointMake(0, 1);//定义详情视图偏移量
      annotationView.leftCalloutAccessoryView=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_classify_cafe.png"]];//定义详情左侧视图
    }

    //修改大头针视图
    //重新设置此类大头针视图的大头针模型(因为有可能是从缓存池中取出来的，位置是放到缓存池时的位置)
    annotationView.annotation=annotation;
    annotationView.image=((KCAnnotation *)annotation).image;//设置大头针视图的图片
    
    return annotationView;
  }else {
    return nil;
  }
}
@end

//
// KCAnnotation.h
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>

@interface KCAnnotation : NSObject<MKAnnotation>

@property (nonatomic) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;

#pragma mark 自定义一个图片属性在创建大头针视图时使用
@property (nonatomic,strong) UIImage *image;

#pragma mark 大头针详情左侧图标
@property (nonatomic,strong) UIImage *icon;
#pragma mark 大头针详情描述 
@property (nonatomic,copy) NSString *detail;
#pragma mark 大头针右下方星级评价
@property (nonatomic,strong) UIImage *rate;

@end

//
// KCCalloutAnnotation.h
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

@interface KCCalloutAnnotation : NSObject<MKAnnotation>

@property (nonatomic) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy,readonly) NSString *title;
@property (nonatomic, copy,readonly) NSString *subtitle;

#pragma mark 左侧图标
@property (nonatomic,strong) UIImage *icon;
#pragma mark 详情描述
@property (nonatomic,copy) NSString *detail;
#pragma mark 星级评价
@property (nonatomic,strong) UIImage *rate;

@end
弹出详情大头针视图：KCCalloutAnnotatonView.h

//
// KCCalloutView.h
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
// 自定义弹出标注视图

#import <UIKit/UIKit.h>
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "KCCalloutAnnotation.h"

@interface KCCalloutAnnotationView : MKAnnotationView

@property (nonatomic ,strong) KCCalloutAnnotation *annotation;

#pragma mark 从缓存取出标注视图
+(instancetype)calloutViewWithMapView:(MKMapView *)mapView;

@end
KCCalloutAnnotationView.m

//
// KCCalloutView.m
// MapKit
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCCalloutAnnotationView.h"
#define kSpacing 5
#define kDetailFontSize 12
#define kViewOffset 80

@interface KCCalloutAnnotationView(){
  UIView *_backgroundView;
  UIImageView *_iconView;
  UILabel *_detailLabel;
  UIImageView *_rateView;
}

@end

@implementation KCCalloutAnnotationView

-(instancetype)init{
  if(self=[super init]){
    [self layoutUI];
  }
  return self;
}
-(instancetype)initWithFrame:(CGRect)frame{
  if (self=[super initWithFrame:frame]) {
    [self layoutUI];
  }
  return self;
}

-(void)layoutUI{
  //背景
  _backgroundView=[[UIView alloc]init];
  _backgroundView.backgroundColor=[UIColor whiteColor];
  //左侧添加图标
  _iconView=[[UIImageView alloc]init];
  
  //上方详情
  _detailLabel=[[UILabel alloc]init];
  _detailLabel.lineBreakMode=NSLineBreakByWordWrapping;
  //[_text sizeToFit];
  _detailLabel.font=[UIFont systemFontOfSize:kDetailFontSize];
  
  //下方星级
  _rateView=[[UIImageView alloc]init];
  
  [self addSubview:_backgroundView];
  [self addSubview:_iconView];
  [self addSubview:_detailLabel];
  [self addSubview:_rateView];
}

+(instancetype)calloutViewWithMapView:(MKMapView *)mapView{
  static NSString *calloutKey=@"calloutKey1";
  KCCalloutAnnotationView *calloutView=(KCCalloutAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:calloutKey];
  if (!calloutView) {
    calloutView=[[KCCalloutAnnotationView alloc]init];
  }
  return calloutView;
}

#pragma mark 当给大头针视图设置大头针模型时可以在此处根据模型设置视图内容
-(void)setAnnotation:(KCCalloutAnnotation *)annotation{
  [super setAnnotation:annotation];
  //根据模型调整布局
  _iconView.image=annotation.icon;
  _iconView.frame=CGRectMake(kSpacing, kSpacing, annotation.icon.size.width, annotation.icon.size.height);
  
  _detailLabel.text=annotation.detail;
  float detailWidth=150.0;
  CGSize detailSize= [annotation.detail boundingRectWithSize:CGSizeMake(detailWidth, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:kDetailFontSize]} context:nil].size;
  float detailX=CGRectGetMaxX(_iconView.frame)+kSpacing;
  _detailLabel.frame=CGRectMake(detailX, kSpacing, detailSize.width, detailSize.height);
  _rateView.image=annotation.rate;
  _rateView.frame=CGRectMake(detailX, CGRectGetMaxY(_detailLabel.frame)+kSpacing, annotation.rate.size.width, annotation.rate.size.height);
  
  float backgroundWidth=CGRectGetMaxX(_detailLabel.frame)+kSpacing;
  float backgroundHeight=_iconView.frame.size.height+2*kSpacing;
  _backgroundView.frame=CGRectMake(0, 0, backgroundWidth, backgroundHeight);
  self.bounds=CGRectMake(0, 0, backgroundWidth, backgroundHeight+kViewOffset);
  
}
@end

//
// KCMainViewController.m
// MapKit Annotation
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
// 37.785834  -122.406417
// 39.92 116.39

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>
#import "KCAnnotation.h"
#import "KCCalloutAnnotationView.h"
#import "KCCalloutAnnotationView.h"

@interface KCMainViewController ()<MKMapViewDelegate>{
  CLLocationManager *_locationManager;
  MKMapView *_mapView;
}

@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  [self initGUI];
}

#pragma mark 添加地图控件
-(void)initGUI{
  CGRect rect=[UIScreen mainScreen].bounds;
  _mapView=[[MKMapView alloc]initWithFrame:rect];
  [self.view addSubview:_mapView];
  //设置代理
  _mapView.delegate=self;
  
  //请求定位服务
  _locationManager=[[CLLocationManager alloc]init];
  if(![CLLocationManager locationServicesEnabled]||[CLLocationManager authorizationStatus]!=kCLAuthorizationStatusAuthorizedWhenInUse){
    [_locationManager requestWhenInUseAuthorization];
  }
  
  //用户位置追踪(用户位置追踪用于标记用户当前位置，此时会调用定位服务)
  _mapView.userTrackingMode=MKUserTrackingModeFollow;
  
  //设置地图类型
  _mapView.mapType=MKMapTypeStandard;
  
  //添加大头针
  [self addAnnotation];
}

#pragma mark 添加大头针 
-(void)addAnnotation{
  CLLocationCoordinate2D location1=CLLocationCoordinate2DMake(39.95, 116.35);
  KCAnnotation *annotation1=[[KCAnnotation alloc]init];
  annotation1.title=@"CMJ Studio";
  annotation1.subtitle=@"Kenshin Cui's Studios";
  annotation1.coordinate=location1;
  annotation1.image=[UIImage imageNamed:@"icon_pin_floating.png"];
  annotation1.icon=[UIImage imageNamed:@"icon_mark1.png"];
  annotation1.detail=@"CMJ Studio...";
  annotation1.rate=[UIImage imageNamed:@"icon_Movie_Star_rating.png"];
  [_mapView addAnnotation:annotation1];
  
  CLLocationCoordinate2D location2=CLLocationCoordinate2DMake(39.87, 116.35);
  KCAnnotation *annotation2=[[KCAnnotation alloc]init];
  annotation2.title=@"Kenshin&Kaoru";
  annotation2.subtitle=@"Kenshin Cui's Home";
  annotation2.coordinate=location2;
  annotation2.image=[UIImage imageNamed:@"icon_paopao_waterdrop_streetscape.png"];
  annotation2.icon=[UIImage imageNamed:@"icon_mark2.png"];
  annotation2.detail=@"Kenshin Cui...";
  annotation2.rate=[UIImage imageNamed:@"icon_Movie_Star_rating.png"];
  [_mapView addAnnotation:annotation2];
}

#pragma mark - 地图控件代理方法
#pragma mark 显示大头针时调用，注意方法中的annotation参数是即将显示的大头针对象
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation{
  //由于当前位置的标注也是一个大头针，所以此时需要判断，此代理方法返回nil使用默认大头针视图
  if ([annotation isKindOfClass:[KCAnnotation class]]) {
    static NSString *key1=@"AnnotationKey1";
    MKAnnotationView *annotationView=[_mapView dequeueReusableAnnotationViewWithIdentifier:key1];
    //如果缓存池中不存在则新建
    if (!annotationView) {
      annotationView=[[MKAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:key1];
//      annotationView.canShowCallout=true;//允许交互点击
      annotationView.calloutOffset=CGPointMake(0, 1);//定义详情视图偏移量
      annotationView.leftCalloutAccessoryView=[[UIImageView alloc]initWithImage:[UIImage imageNamed:@"icon_classify_cafe.png"]];//定义详情左侧视图
    }

    //修改大头针视图
    //重新设置此类大头针视图的大头针模型(因为有可能是从缓存池中取出来的，位置是放到缓存池时的位置)
    annotationView.annotation=annotation;
    annotationView.image=((KCAnnotation *)annotation).image;//设置大头针视图的图片
    
    return annotationView;
  }else if([annotation isKindOfClass:[KCCalloutAnnotation class]]){
    //对于作为弹出详情视图的自定义大头针视图无弹出交互功能（canShowCallout=false，这是默认值），在其中可以自由添加其他视图（因为它本身继承于UIView）
    KCCalloutAnnotationView *calloutView=[KCCalloutAnnotationView calloutViewWithMapView:mapView];
    calloutView.annotation=annotation;
    return calloutView;
  } else {
    return nil;
  }
}

#pragma mark 选中大头针时触发
//点击一般的大头针KCAnnotation时添加一个大头针作为所点大头针的弹出详情视图
-(void)mapView:(MKMapView *)mapView didSelectAnnotationView:(MKAnnotationView *)view{
  KCAnnotation *annotation=view.annotation;
  if ([view.annotation isKindOfClass:[KCAnnotation class]]) {
    //点击一个大头针时移除其他弹出详情视图
//    [self removeCustomAnnotation];
    //添加详情大头针，渲染此大头针视图时将此模型对象赋值给自定义大头针视图完成自动布局
    KCCalloutAnnotation *annotation1=[[KCCalloutAnnotation alloc]init];
    annotation1.icon=annotation.icon;
    annotation1.detail=annotation.detail;
    annotation1.rate=annotation.rate;
    annotation1.coordinate=view.annotation.coordinate;
    [mapView addAnnotation:annotation1];
  }
}

#pragma mark 取消选中时触发
-(void)mapView:(MKMapView *)mapView didDeselectAnnotationView:(MKAnnotationView *)view{
  [self removeCustomAnnotation];
}

#pragma mark 移除所用自定义大头针
-(void)removeCustomAnnotation{
  [_mapView.annotations enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    if ([obj isKindOfClass:[KCCalloutAnnotation class]]) {
      [_mapView removeAnnotation:obj];
    }
  }];
}
@end 

//
// KCMainViewController.m
// AppleMap
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

@interface KCMainViewController ()
@property (nonatomic,strong) CLGeocoder *geocoder;
@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  _geocoder=[[CLGeocoder alloc]init];
  
  [self location];
}

#pragma mark 在地图上定位
-(void)location{
  //根据“北京市”进行地理编码
  [_geocoder geocodeAddressString:@"北京市" completionHandler:^(NSArray *placemarks, NSError *error) {
    CLPlacemark *clPlacemark=[placemarks firstObject];//获取第一个地标
    MKPlacemark *mkplacemark=[[MKPlacemark alloc]initWithPlacemark:clPlacemark];//定位地标转化为地图的地标
    NSDictionary *options=@{MKLaunchOptionsMapTypeKey:@(MKMapTypeStandard)};
    MKMapItem *mapItem=[[MKMapItem alloc]initWithPlacemark:mkplacemark];
    [mapItem openInMapsWithLaunchOptions:options];
  }];
}
@end

//
// KCMainViewController.m
// AppleMap
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

@interface KCMainViewController ()
@property (nonatomic,strong) CLGeocoder *geocoder;
@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  _geocoder=[[CLGeocoder alloc]init];
  
  [self listPlacemark];
}

-(void)listPlacemark{
  //根据“北京市”进行地理编码
  [_geocoder geocodeAddressString:@"北京市" completionHandler:^(NSArray *placemarks, NSError *error) {
    CLPlacemark *clPlacemark1=[placemarks firstObject];//获取第一个地标
    MKPlacemark *mkPlacemark1=[[MKPlacemark alloc]initWithPlacemark:clPlacemark1];
    //注意地理编码一次只能定位到一个位置，不能同时定位，所在放到第一个位置定位完成回调函数中再次定位
    [_geocoder geocodeAddressString:@"郑州市" completionHandler:^(NSArray *placemarks, NSError *error) {
      CLPlacemark *clPlacemark2=[placemarks firstObject];//获取第一个地标
      MKPlacemark *mkPlacemark2=[[MKPlacemark alloc]initWithPlacemark:clPlacemark2];
      NSDictionary *options=@{MKLaunchOptionsMapTypeKey:@(MKMapTypeStandard)};
      //MKMapItem *mapItem1=[MKMapItem mapItemForCurrentLocation];//当前位置
      MKMapItem *mapItem1=[[MKMapItem alloc]initWithPlacemark:mkPlacemark1];
      MKMapItem *mapItem2=[[MKMapItem alloc]initWithPlacemark:mkPlacemark2];
      [MKMapItem openMapsWithItems:@[mapItem1,mapItem2] launchOptions:options];
      
    }];
    
  }];
}
@end

//
// KCMainViewController.m
// AppleMap
//
// Created by Kenshin Cui on 14/3/27.
// Copyright (c) 2014年 Kenshin Cui. All rights reserved.
//

#import "KCMainViewController.h"
#import <CoreLocation/CoreLocation.h>
#import <MapKit/MapKit.h>

@interface KCMainViewController ()
@property (nonatomic,strong) CLGeocoder *geocoder;
@end

@implementation KCMainViewController

- (void)viewDidLoad {
  [super viewDidLoad];
  
  _geocoder=[[CLGeocoder alloc]init];
  
  [self turnByTurn];
}

-(void)turnByTurn{
  //根据“北京市”地理编码
  [_geocoder geocodeAddressString:@"北京市" completionHandler:^(NSArray *placemarks, NSError *error) {
    CLPlacemark *clPlacemark1=[placemarks firstObject];//获取第一个地标
    MKPlacemark *mkPlacemark1=[[MKPlacemark alloc]initWithPlacemark:clPlacemark1];
    //注意地理编码一次只能定位到一个位置，不能同时定位，所在放到第一个位置定位完成回调函数中再次定位
    [_geocoder geocodeAddressString:@"郑州市" completionHandler:^(NSArray *placemarks, NSError *error) {
      CLPlacemark *clPlacemark2=[placemarks firstObject];//获取第一个地标
      MKPlacemark *mkPlacemark2=[[MKPlacemark alloc]initWithPlacemark:clPlacemark2];
      NSDictionary *options=@{MKLaunchOptionsMapTypeKey:@(MKMapTypeStandard),MKLaunchOptionsDirectionsModeKey:MKLaunchOptionsDirectionsModeDriving};
      //MKMapItem *mapItem1=[MKMapItem mapItemForCurrentLocation];//当前位置
      MKMapItem *mapItem1=[[MKMapItem alloc]initWithPlacemark:mkPlacemark1];
      MKMapItem *mapItem2=[[MKMapItem alloc]initWithPlacemark:mkPlacemark2];
      [MKMapItem openMapsWithItems:@[mapItem1,mapItem2] launchOptions:options];
      
    }];
    
  }];
}
@end