● MapKit框架使用前提

● 导入框架
● 导入主头文件
#import <MapKit/MapKit.h>
 
●  MapKit框架使用须知
●  MapKit框架中所有数据类型的前缀都是MK
●  MapKit有一个比较重要的UI控件 :MKMapView,专门用于地图显示

 

跟踪显示用户的位置

● 设置MKMapView的userTrackingMode属性可以跟踪显示用户的当前位置

● MKUserTrackingModeNone :不跟踪用户的位置

● MKUserTrackingModeFollow :跟踪并在地图上显示用户的当前位置

● MKUserTrackingModeFollowWithHeading :跟踪并在地图上显示用户的当前位 置,地图会跟随用户的前进方向进行旋转

● 下图是跟踪效果
● 蓝色发光圆点就是用户的当前位置
● 蓝色发光原点,专业术语叫做“大头针”

地图的类型

● 可以通过设置MKMapView的mapViewType设置地图类型
● MKMapTypeStandard:普通地图(左图)
● MKMapTypeSatellite:卫星云图(中图)
● MKMapTypeHybrid:普通地图覆盖于卫星云图之上(右图)

MKMapView的代理

MKMapView可以设置一个代理对象,用来监听地图的相关行为

常见的代理方法有

-(void)mapView:(MKMapView*)mapViewdidUpdateUserLocation: (MKUserLocation *)userLocation;

调用非常频繁,不断监测用户的当前位置

每次调用,都会把用户的最新位置(userLocation参数)传进来

-(void)mapView:(MKMapView*)mapViewregionWillChangeAnimated: (BOOL)animated;

地图的显示区域即将发生改变的时候调用

-(void)mapView:(MKMapView*)mapViewregionDidChangeAnimated: (BOOL)animated;

地图的显示区域已经发生改变的时候调用

MKUserLocation

● MKUserLocation其实是个大头针模型,包括以下属性
● @property(nonatomic,copy)NSString*title;

• 显示在大头针上的标题

● @property(nonatomic,copy)NSString*subtitle;

• 显示在大头针上的子标题

● @property(readonly,nonatomic)CLLocation*location;

• 地理位置信息(大头针钉在什么地方?)

设置地图的显示

通过MKMapView的下列方法,可以设置地图显示的位置和区域

1.设置地图的中心点位置

@property (nonatomic) CLLocationCoordinate2D centerCoordinate;
- (void)setCenterCoordinate:(CLLocationCoordinate2D)coordinate
animated:(BOOL)animated;

2.设置地图的显示区域 
@property (nonatomic) MKCoordinateRegion region;
- (void)setRegion:(MKCoordinateRegion)region animated:
(BOOL)animated;

MKCoordinateRegion

● MKCoordinateRegion是一个用来表示区域的结构体,定义如下
typedef struct {

CLLocationCoordinate2D center; // 区域的中心点位置

MKCoordinateSpan span; // 区域的跨度

} MKCoordinateRegion;

● MKCoordinateSpan的定义

typedef struct {

CLLocationDegrees latitudeDelta; // 纬度跨度

CLLocationDegrees longitudeDelta; // 经度跨度

} MKCoordinateSpan;

大头针的基本操作

● 添加一个大头针

● -(void)addAnnotation:(id<MKAnnotation>)annotation;

● 添加多个大头针
● -(void)addAnnotations:(NSArray*)annotations;

● 移除一个大头针
● -(void)removeAnnotation:(id<MKAnnotation>)annotation;

● 移除多个大头针
● -(void)removeAnnotations:(NSArray*)annotations;

● (id<MKAnnotation>)annotation参数是什么东西?
● 大头针模型对象:用来封装大头针的数据,比如大头针的位置、标题、子标题等数据

大头针模型

● 新建一个大头针模型类
#import <MapKit/MapKit.h>

@interface MJTuangouAnnotation : NSObject <MKAnnotation>
/** 坐标位置 */
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;

/** 标题 */

@property (nonatomic, copy) NSString *title;

/** 子标题 */
@property (nonatomic, copy) NSString *subtitle;

@end

添加大头针

MJTuangouAnnotation *anno = [[MJTuangouAnnotation alloc] init];
anno.title = @"XX超市";
anno.subtitle = @"地址:XX 公交是XX";
anno.coordinate = CLLocationCoordinate2DMake(40, 116);
[self.mapView addAnnotation:anno];

自定义大头针

● 很多情况下,需要自定义大头针的显示样式,比如显示一张图片

自定义大头针

● 如何自定义大头针

● 设置MKMapView的代理

● 实现下面的代理方法,返回大头针控件

- (MKAnnotationView *)mapView:(MKMapView *)mapView
viewForAnnotation:(id <MKAnnotation>)annotation;
●  根据传进来的(id <MKAnnotation>)annotation参数创建并返回对应的大头针控 件 ●  代理方法的使用注意 ●  如果返回nil,显示出来的大头针就采取系统的默认样式 ●  标识用户位置的蓝色发光圆点,它也是一个大头针,当显示这个大头针时,也会调用代 理方法 ●  因此,需要在代理方法中分清楚(id <MKAnnotation>)annotation参数代表自定 义的大头针还是蓝色发光圆点

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation: (id<MKAnnotation>)annotation

{

// 判断annotation的类型
if (![annotation isKindOfClass:[MJTuangouAnnotation class]]) return nil;

// 创建MKAnnotationView
static NSString *ID = @"tuangou";
MKAnnotationView *annoView = [mapView dequeueReusableAnnotationViewWithIdentifier:ID];
if (annoView == nil) {

       annoView = [[MKAnnotationView alloc] initWithAnnotation:annotation
reuseIdentifier:ID];
       annoView.canShowCallout = YES;
}
// 传递模型数据
annoView.annotation = annotation;

// 设置图片
MJTuangouAnnotation *tuangouAnnotation = annotation;

annoView.image = [UIImage imageNamed:tuangouAnnotation.icon];

return annoView;

}

MKAnnotationView

● 地图上的大头针控件是MKAnnotationView
● MKAnnotationView的属性

● @property(nonatomic,strong)id<MKAnnotation>annotation;

• 大头针模型

● @property(nonatomic,strong)UIImage*image;

• 显示的图片

● @property(nonatomic)BOOLcanShowCallout;
• 是否显示标注

● @property(nonatomic)CGPointcalloutOffset;

• 标注的偏移量

● @property(strong,nonatomic)UIView*rightCalloutAccessoryView;

• 标注右边显示什么控件

● @property(strong,nonatomic)UIView*leftCalloutAccessoryView;

• 标注左边显示什么控件

MKPinAnnotationView

● MKPinAnnotationView是MKAnnotationView的子类

● MKPinAnnotationView比MKAnnotationView多了2个属性

● @property(nonatomic)MKPinAnnotationColorpinColor;

• 大头针颜色

● @property(nonatomic)BOOLanimatesDrop;

• 大头针第一次显示时是否从天而降

 

实例:MpaKit基本使用

/**
CLLocation : 封装位置信息(经纬度、海拔)
CLPlacemark : 封装地标信息(位置信息CLLocation、地名name、国家country)
MKUserLocation : 封装地图上大头针的位置信息(位置信息CLLocation、标题title、子标题subtitle)
CLLocationDegrees : 度数(经度、纬度)
CLLocationCoordinate2D : 地理坐标(经度CLLocationDegrees longitude、纬度CLLocationDegrees latitude)
MKCoordinateSpan : 跨度(经度跨度CLLocationDegrees longitudeDelta、纬度跨度CLLocationDegrees latitudeDelta)
MKCoordinateRegion: 区域(中心位置CLLocationCoordinate2D center、区域跨度MKCoordinateSpan span)
*/ #import "HMViewController.h"
#import <MapKit/MapKit.h> @interface HMViewController () <MKMapViewDelegate, CLLocationManagerDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@end @implementation HMViewController - (void)viewDidLoad
{
[super viewDidLoad];
// 1.设置地图类型
self.mapView.mapType = MKMapTypeStandard; // 2.设置跟踪模式(MKUserTrackingModeFollow == 跟踪)
self.mapView.userTrackingMode = MKUserTrackingModeFollow; // 3.设置代理(监控地图的相关行为:比如显示的区域发生了改变)
self.mapView.delegate = self;
} #pragma mark - MKMapViewDelegate
/**
* 更新到用户的位置时就会调用(显示的位置、显示范围改变)
* userLocation : 大头针模型数据, 对大头针位置的一个封装(这里的userLocation描述的是用来显示用户位置的蓝色大头针)
*/
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
userLocation.title = @"天朝帝都";
userLocation.subtitle = @"帝都是个牛逼的地方";
} /**
* 地图显示的区域改变了就会调用(显示的位置、显示范围改变)
*/
- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
{
CLLocationCoordinate2D center = mapView.region.center;
MKCoordinateSpan span = mapView.region.span; NSLog(@"中心点=(%f, %f), 区域跨度=(%f, %f)", center.longitude, center.latitude, span.longitudeDelta, span.latitudeDelta);
} /**
* 地图显示的区域即将改变了就会调用
*/
- (void)mapView:(MKMapView *)mapView regionWillChangeAnimated:(BOOL)animated
{
// NSLog(@"regionWillChangeAnimated");
} @end

实例:MpaKit ->显示特定位置和区域

#import "HMViewController.h"
#import <MapKit/MapKit.h> @interface HMViewController () <MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
- (IBAction)backToUserLocation; @end @implementation HMViewController - (void)viewDidLoad
{
[super viewDidLoad]; // [self.mapView setCenterCoordinate:<#(CLLocationCoordinate2D)#>]; // 设置地图显示的中心位置
// CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(39, 116);
// [self.mapView setCenterCoordinate:coordinate animated:YES]; // 设置地图显示的区域
// [self.mapView setRegion:<#(MKCoordinateRegion)#>];
// CLLocationCoordinate2D center = CLLocationCoordinate2DMake(39, 116);
// MKCoordinateSpan span = MKCoordinateSpanMake(0.1, 0.1);
// MKCoordinateRegion region = MKCoordinateRegionMake(center, span);
// [self.mapView setRegion:region animated:YES]; self.mapView.userTrackingMode = MKUserTrackingModeFollow;
self.mapView.delegate = self;
} #pragma mark - MKMapViewDelegate
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
// [mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
CLLocationCoordinate2D center = userLocation.location.coordinate;
MKCoordinateSpan span = MKCoordinateSpanMake(0.2509, 0.2256);
MKCoordinateRegion region = MKCoordinateRegionMake(center, span);
[self.mapView setRegion:region animated:YES];
} //- (void)mapView:(MKMapView *)mapView regionDidChangeAnimated:(BOOL)animated
//{
// NSLog(@"%f %f", mapView.region.span.latitudeDelta, mapView.region.span.longitudeDelta);
//}
- (IBAction)backToUserLocation {
CLLocationCoordinate2D center = self.mapView.userLocation.location.coordinate;
[self.mapView setCenterCoordinate:center animated:YES];
}
@end

实例:MpaKit ->添加大头针

#import "HMViewController.h"
#import <MapKit/MapKit.h>
#import "HMAnnotation.h" @interface HMViewController () <MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@end @implementation HMViewController - (void)viewDidLoad
{
[super viewDidLoad]; // HMAnnotation *anno1 = [[HMAnnotation alloc] init];
// anno1.coordinate = CLLocationCoordinate2DMake(39, 119);
// anno1.title = @"帝都";
// anno1.subtitle = @"帝都帝都帝都帝都帝都";
// // 添加一个大头针模型(模型:描述大头针的信息)
// [self.mapView addAnnotation:anno1];
//
// HMAnnotation *anno2 = [[HMAnnotation alloc] init];
// anno2.coordinate = CLLocationCoordinate2DMake(23, 116);
// anno2.title = @"广东";
// anno2.subtitle = @"广东广东广东广东广东";
// [self.mapView addAnnotation:anno2]; /**
纬度范围:N 3°51′ ~ N 53°33′
经度范围:E 73°33′ ~ E 135°05′
*/ for (int i = ; i<; i++) {
CLLocationDegrees latitude = + arc4random_uniform();
CLLocationDegrees longitude = 73.2 + arc4random_uniform(); HMAnnotation *anno = [[HMAnnotation alloc] init];
anno.coordinate = CLLocationCoordinate2DMake(latitude, longitude);
[self.mapView addAnnotation:anno];
}
} @end

实例:MpaKit ->自定义大头针

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h> @interface HMAnnotation : NSObject <MKAnnotation>
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
/**
* 图片名
*/
@property (nonatomic, copy) NSString *icon;
@end
#import "HMAnnotationView.h"
#import "HMAnnotation.h" @interface HMAnnotationView()
@property (nonatomic, weak) UIImageView *iconView;
@end @implementation HMAnnotationView + (instancetype)annotationViewWithMapView:(MKMapView *)mapView
{
static NSString *ID = @"anno";
HMAnnotationView *annotationView = (HMAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:ID];
if (annotationView == nil) {
// 传入循环利用标识来创建大头针控件
annotationView = [[HMAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:ID];
}
return annotationView;
} - (id)initWithAnnotation:(id<MKAnnotation>)annotation reuseIdentifier:(NSString *)reuseIdentifier
{
if (self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier]) {
// 显示标题和子标题
self.canShowCallout = YES; // 左边显示一个图片
UIImageView *iconView = [[UIImageView alloc] init];
iconView.bounds = CGRectMake(, , , );
self.leftCalloutAccessoryView = iconView;
self.iconView = iconView;
}
return self;
} - (void)setAnnotation:(HMAnnotation *)annotation
{
[super setAnnotation:annotation]; self.image = [UIImage imageNamed:annotation.icon];
self.iconView.image = self.image;
} @end
#import "HMViewController.h"
#import <MapKit/MapKit.h>
#import "HMAnnotation.h"
#import "HMAnnotationView.h" @interface HMViewController () <MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
- (IBAction)add; @end @implementation HMViewController - (void)viewDidLoad
{
[super viewDidLoad]; self.mapView.delegate = self; self.mapView.userTrackingMode = MKUserTrackingModeFollow;
} - (IBAction)add {
// HMAnnotation *anno1 = [[HMAnnotation alloc] init];
// anno1.coordinate = CLLocationCoordinate2DMake(39, 119);
// anno1.title = @"帝都";
// anno1.subtitle = @"帝都帝都帝都帝都帝都";
// anno1.icon = @"me";
// [self.mapView addAnnotation:anno1];
//
// HMAnnotation *anno2 = [[HMAnnotation alloc] init];
// anno2.coordinate = CLLocationCoordinate2DMake(23, 116);
// anno2.title = @"广东";
// anno2.subtitle = @"广东广东广东广东广东";
// anno2.icon = @"other";
// [self.mapView addAnnotation:anno2];
HMAnnotation *tg1 = [[HMAnnotation alloc] init];
tg1.title = @"xxx大饭店";
tg1.subtitle = @"全场一律15折,会员20折";
tg1.icon = @"category_1";
tg1.coordinate = CLLocationCoordinate2DMake(, );
[self.mapView addAnnotation:tg1]; HMAnnotation *tg2 = [[HMAnnotation alloc] init];
tg2.title = @"xxx影院";
tg2.subtitle = @"最新大片:美国队长2,即将上映。。。";
tg2.icon = @"category_5";
tg2.coordinate = CLLocationCoordinate2DMake(, );
[self.mapView addAnnotation:tg2];
} #pragma mark - MKMapViewDelegate
- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(HMAnnotation *)annotation
{
// 返回nil就会按照系统的默认做法
if (![annotation isKindOfClass:[HMAnnotation class]]) return nil; // 1.获得大头针控件
HMAnnotationView *annoView = [HMAnnotationView annotationViewWithMapView:mapView]; // 2.传递模型
annoView.annotation = annotation; return annoView;
} //- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
//{
// // 1.先从缓存池中取出可以循环利用的大头针控件
// static NSString *ID = @"anno";
// MKPinAnnotationView *annotationView = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:ID];
//
// // 2.缓存池中没有可以循环利用的大头针控件
// if (annotationView == nil) {
// // 传入循环利用标识来创建大头针控件
// annotationView = [[MKPinAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:ID];
// // 设置头的颜色
// annotationView.pinColor = MKPinAnnotationColorPurple;
// // 从天而降
// annotationView.animatesDrop = YES;
// // 显示标题和子标题
// annotationView.canShowCallout = YES;
//// annotationView.calloutOffset = CGPointMake(0, -10);
//// annotationView.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeContactAdd];
//// annotationView.leftCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeInfoDark];
//
// // 往大头针里面添加一个按钮(测试)
//// [annotationView addSubview:[UIButton buttonWithType:UIButtonTypeContactAdd]];
// }
//
// // 3.传递模型(更新大头针数据,覆盖掉之前的旧数据)
// annotationView.annotation = annotation;
//
// return annotationView;
//} //- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(HMAnnotation *)annotation
//{
// // 1.先从缓存池中取出可以循环利用的大头针控件
// static NSString *ID = @"anno";
// MKAnnotationView *annotationView = [mapView dequeueReusableAnnotationViewWithIdentifier:ID];
//
// // 2.缓存池中没有可以循环利用的大头针控件
// if (annotationView == nil) {
// // 传入循环利用标识来创建大头针控件
// annotationView = [[MKAnnotationView alloc] initWithAnnotation:nil reuseIdentifier:ID];
// // 显示标题和子标题
// annotationView.canShowCallout = YES;
// }
//
// // 3.传递模型(更新大头针数据,覆盖掉之前的旧数据)
// annotationView.annotation = annotation;
//
// // 4.设置图片
// annotationView.image = [UIImage imageNamed:annotation.icon];
//
// return annotationView;
//}
@end

实例:MpaKit ->在地图上画线

#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h> @interface HMAnnotation : NSObject <MKAnnotation>
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;
@property (nonatomic, copy) NSString *title;
@property (nonatomic, copy) NSString *subtitle;
@end
#import "HMViewController.h"
#import <MapKit/MapKit.h>
#import "HMAnnotation.h" @interface HMViewController () <MKMapViewDelegate>
@property (weak, nonatomic) IBOutlet MKMapView *mapView;
@property (nonatomic, strong) CLGeocoder *geocoder;
- (IBAction)startNavigation; @property (nonatomic, strong) MKPlacemark *sourceMKPm;
@property (nonatomic, strong) MKPlacemark *destinationMKPm;
@end @implementation HMViewController - (CLGeocoder *)geocoder
{
if (!_geocoder) {
self.geocoder = [[CLGeocoder alloc] init];
}
return _geocoder;
} - (IBAction)startNavigation {
if (self.sourceMKPm == nil || self.destinationMKPm == nil) return; // 起点
MKMapItem *sourceItem = [[MKMapItem alloc] initWithPlacemark:self.sourceMKPm]; // 终点
MKMapItem *destinationItem = [[MKMapItem alloc] initWithPlacemark:self.destinationMKPm]; // 存放起点和终点
NSArray *items = @[sourceItem, destinationItem]; // 参数
NSMutableDictionary *options = [NSMutableDictionary dictionary];
// 导航模式:驾驶导航
options[MKLaunchOptionsDirectionsModeKey] = MKLaunchOptionsDirectionsModeDriving;
// 是否要显示路况
options[MKLaunchOptionsShowsTrafficKey] = @YES; // 打开苹果官方的导航应用
[MKMapItem openMapsWithItems:items launchOptions:options];
} - (void)viewDidLoad
{
[super viewDidLoad]; self.mapView.delegate = self; NSString *sourceAddress = @"广州";
NSString *destinationAddress = @"帝都"; [self.geocoder geocodeAddressString:sourceAddress completionHandler:^(NSArray *placemarks, NSError *error) {
CLPlacemark *gzPm = [placemarks firstObject];
if (gzPm == nil) return; // 添加广州大头针
HMAnnotation *gzAnno = [[HMAnnotation alloc] init];
gzAnno.coordinate = gzPm.location.coordinate;
gzAnno.title = sourceAddress;
gzAnno.subtitle = gzPm.name;
[self.mapView addAnnotation:gzAnno]; [self.geocoder geocodeAddressString:destinationAddress completionHandler:^(NSArray *placemarks, NSError *error) {
CLPlacemark *bjPm = [placemarks firstObject];
if (bjPm == nil) return; // 添加北京大头针
HMAnnotation *bjAnno = [[HMAnnotation alloc] init];
bjAnno.coordinate = bjPm.location.coordinate;
bjAnno.title = destinationAddress;
bjAnno.subtitle = bjPm.name;
[self.mapView addAnnotation:bjAnno]; [self drawLineWithSourceCLPm:gzPm destinationCLPm:bjPm];
}];
}];
} - (void)drawLineWithSourceCLPm:(CLPlacemark *)sourceCLPm destinationCLPm:(CLPlacemark *)destinationCLPm
{
if (sourceCLPm == nil || destinationCLPm == nil) return; // 1.初始化方向请求
// 方向请求
MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init]; // 设置起点
MKPlacemark *sourceMKPm = [[MKPlacemark alloc] initWithPlacemark:sourceCLPm];
request.source = [[MKMapItem alloc] initWithPlacemark:sourceMKPm];
self.sourceMKPm = sourceMKPm; // 设置终点
MKPlacemark *destinationMKPm = [[MKPlacemark alloc] initWithPlacemark:destinationCLPm];
request.destination = [[MKMapItem alloc] initWithPlacemark:destinationMKPm];
self.destinationMKPm = destinationMKPm; // 2.根据请求创建方向
MKDirections *directions = [[MKDirections alloc] initWithRequest:request]; // 3.执行请求
[directions calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {
if (error) return; for (MKRoute *route in response.routes) {
// 添加路线遮盖(传递路线的遮盖模型数据)
[self.mapView addOverlay:route.polyline];
}
}]; // 遮盖 overlay
} #pragma mark - 代理方法
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay
{
MKPolylineRenderer *redender = [[MKPolylineRenderer alloc] initWithOverlay:overlay];
redender.lineWidth = ;
redender.strokeColor = [UIColor blueColor];
return redender;
} @end
 

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