MKMapView
- 首先,我们单击项目
- 导入依赖库
导入库文件
- 新建了类FL_Annotation, 继承自NSObject
FL_Annotation.h代码
#import <Foundation/Foundation.h>
#import <MapKit/MapKit.h>//地图框架
//大头针标注模型, 在自定义的时候必须遵循MKAnnotation协议
@interface FL_Annotation : NSObject<MKAnnotation>
//遵循协议后,必须实现的三个属性
//经纬度
@property (nonatomic, assign) CLLocationCoordinate2D coordinate;//为什么使用assign
//主标题
@property (nonatomic, copy) NSString* title;
//副标题
@property (nonatomic, copy) NSString *subtitle;
@end
ViewController.m
#import "ViewController.h"
//大头针标注模型
#import <MapKit/MapKit.h>
#import "FL_Annotation.h"
//使用地图,必须在工程中引入框架,而且,地图的使用都依赖定位服务
@interface ViewController ()<MKMapViewDelegate>
//地图属性
@property (nonatomic, strong) MKMapView *mapView;
//定位管理对象
@property (nonatomic, strong) CLLocationManager *locationManger;
//记录最后一次插入大头针的位置(待用...)
@property (nonatomic, assign) CGPoint lastPoint;
//地理编码对象
@property (nonatomic, strong) CLGeocoder *geocoder;
@end
@implementation ViewController
//懒加载
-(CLLocationManager *)locationManger {
if (_locationManger == nil) {
self.locationManger = [CLLocationManager new];
}
return _locationManger;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.mapView = [[MKMapView alloc]initWithFrame:self.view.frame];
[self.view addSubview:self.mapView];
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(tapGestureAction:)];
[self.mapView addGestureRecognizer:tapGesture];
//1.在info.plist中配置允许定位设置
//NSLocationWhenInUseUsageDiscription
//2.查看手机定位服务是否开启
if (![CLLocationManager locationServicesEnabled]) {
NSLog(@"请在设置中打开定位服务");
return;
}
//3.请求用户授权
if ([CLLocationManager authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
//请求用户授权
[self.locationManger requestWhenInUseAuthorization];
}
//4.重要,让地图显示当前用户的位置
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
//设置代理对象
self.mapView.delegate = self;
//添加按钮
[self addButton];
}
#pragma mark - 添加按钮
-(void)addButton
{
UIButton *removeButton = [[UIButton alloc]initWithFrame:(CGRectMake(20, 40, 150, 42))];
removeButton.tintColor = [UIColor blackColor];
removeButton.backgroundColor = [UIColor lightGrayColor];
[removeButton setTitle:@"移除坐标" forState:UIControlStateNormal];
[removeButton addTarget:self action:@selector(removeButtonAction:) forControlEvents:(UIControlEventTouchUpInside)];
[self.view addSubview:removeButton];
UIButton *playLine = [[UIButton alloc]initWithFrame:(CGRectMake(249, 40, 150, 42))];
playLine.tintColor = [UIColor blackColor];
playLine.backgroundColor = [UIColor lightGrayColor];
[playLine setTitle:@"规划路线" forState:UIControlStateNormal];
[playLine addTarget:self action:@selector(playLineAction:) forControlEvents:(UIControlEventTouchUpInside)];
[self.view addSubview:playLine];
}
#pragma mark - 轻拍手势,添加大头针
//轻拍地图,立马添加大头针.但是,添加大头针视图不需要我们来创建,我们只能添加大头针标注模型,标注模型相当于数据层(model) 大头针视图相当于View层(相当于cell)
-(void)tapGestureAction:(UITapGestureRecognizer *)sender
{
//1.获取触摸点的位置
CGPoint touchPoint = [sender locationInView:self.mapView];
//2.判断触摸点,位置相同就不能再添加大头针
if (self.lastPoint.x == touchPoint.x && self.lastPoint.y == touchPoint.y) {
return;//触摸点重复
}
//3.获取触摸点x, y的值,并且转为经纬度
CLLocationCoordinate2D coordinate = [self.mapView convertPoint:touchPoint toCoordinateFromView:self.mapView];
//4.创建大头针标注模型(用来展示大头针所定是位置信息)
FL_Annotation *annotation = [[FL_Annotation alloc] init];
//给模型的属性赋值
annotation.coordinate = coordinate;
annotation.title = @"北京市";
annotation.subtitle = @"昌平区回龙观";
//添加大头针标注模型(用来展示大头针所定的位置上信息)
[self.mapView addAnnotation:annotation];
//记录当前点的位置,为下一次点击做准备
self.lastPoint = touchPoint;
}
#pragma mark - 地图的代理方法
//这个方法就是地图控件根据标注模型信息创建大头针的方法
-(MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation
{
//判断大头针标注模型是否是自定义模型
if ([annotation isKindOfClass:[FL_Annotation class]]) {
//如果需要展示的模型确实是自定义模型
//1.创建静态标识符
static NSString *identifier = @"view";
//2.去重用队列中取出可用的大头针对象
MKPinAnnotationView *view = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:identifier];
//3.判断是否可用
if (view == nil) {
view = [[MKPinAnnotationView alloc]initWithAnnotation:annotation reuseIdentifier:identifier];
}
//给大头针赋值
view.annotation = annotation;
//设置图片<需要赋的值>
//MARK - 大头针有两种模式(父类:MKAnnotationView 子类:MKPinAnnotationView)
//父类中的view,image 属性是有效的,在子类中无效, 代替大头针的图片
view.image = [UIImage imageNamed:@"tab_01.jpg"];
//MARK - 动画属性和大头针�颜色属性属于子类属性, 父类中不可用
//大头针是否从天而降
view.animatesDrop = YES;
//可以设置大头针的颜色
view.pinTintColor = [UIColor orangeColor];
//设置弹出标注模型的弹出框
view.canShowCallout = YES;
//在弹出框中添加图片,比如:在左侧添加图片
UIImageView *imageView = [[UIImageView alloc]initWithImage:[UIImage imageNamed:@"tab_01.jpg"]];
imageView.frame = CGRectMake(0, 0, 40, 40);
view.leftCalloutAccessoryView = imageView;
return view;
}
return nil;
}
#pragma mark - 移除大头针事件
-(void)removeButtonAction:(UIButton *)sender
{
//我们不能移除大头针,我们只需要移除大头针标注模型即可
[self.mapView removeAnnotations:self.mapView.annotations];
}
#pragma mark - 规划路线
- (void)playLineAction:(UIButton *)sender {
[self drawLineBetweenBeginCity:@"北京" endCity:@"内蒙古"];
}
#pragma mark -- 封装方法
//懒加载---给地理编码对象开空间
- (CLGeocoder *)geocoder {
if (_geocoder == nil) {
self.geocoder = [[CLGeocoder alloc]init];
}
return _geocoder;
}
- (void)drawLineBetweenBeginCity:(NSString *)scourceCity endCity:(NSString *)destinationCity {
//1.因为传入的城市名称是中文字符串.所以先进行地理编码.
[self.geocoder geocodeAddressString:scourceCity completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//获取起点城市地标
CLPlacemark *mark1 = [placemarks firstObject];
//设置路线显示范围
[self.mapView setRegion:MKCoordinateRegionMake(mark1.location.coordinate, MKCoordinateSpanMake(10.0, 10.0)) animated:YES];
//2.获取目的城市的地标对象
[self.geocoder geocodeAddressString:destinationCity completionHandler:^(NSArray<CLPlacemark *> * _Nullable placemarks, NSError * _Nullable error) {
//获取地标对象
CLPlacemark *mark2 = [placemarks firstObject];
#pragma mark -- 获取了两个城市的地标对象后.开始添加路段模型.显示路线
[self addLineFrom:mark1 to:mark2];
}];
}];
}
#pragma mark - 规划路线
- (void)addLineFrom:(CLPlacemark *)from to:(CLPlacemark *)to {
//1.在起始和结束位置上插入两个大头针
FL_Annotation *oneAnnotation = [[FL_Annotation alloc]init];
oneAnnotation.coordinate = from.location.coordinate;
FL_Annotation *twoAnnotation = [[FL_Annotation alloc]init];
twoAnnotation.coordinate = to.location.coordinate;
//添加在地图上
[self.mapView addAnnotations:@[oneAnnotation, twoAnnotation]];
//2.开始路线请求
MKDirectionsRequest *request = [[MKDirectionsRequest alloc]init];
//3.选择出行模式
request.transportType = MKDirectionsTransportTypeAutomobile;//自驾
//4.设置路线的起点
MKPlacemark *sourcePlace = [[MKPlacemark alloc]initWithPlacemark:from];
request.source = [[MKMapItem alloc]initWithPlacemark:sourcePlace];
//5.设置路线的终点
MKPlacemark *destinationPlace = [[MKPlacemark alloc]initWithPlacemark:to];
request.destination = [[MKMapItem alloc]initWithPlacemark:destinationPlace];
//6.根据请求对象获取路线对象
MKDirections *direction = [[MKDirections alloc]initWithRequest:request];
//7.计算路线(路线由一条条路段组成.而路段由一个个的轨迹点组成)
[direction calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse * _Nullable response, NSError * _Nullable error) {
NSLog(@"总共有%lu条路线组成", response.routes.count);
//填充轨迹点模型.
for (MKRoute *route in response.routes) {
[self.mapView addOverlay:route.polyline];
}
}];
//polyline 轨迹点模型.还有MKPolylineView 这个是轨迹点视图.他们的关系类似于(大头针和大头针标注模型的关系).我们不创建轨迹点视图.但是只要先添加了轨迹点模型到地图上.就会获取轨迹点视图进行展示
//一旦轨迹点添加完毕.系统就会自动调用绘制地图上路线的代理方法.来展示路线
}
#pragma mark -- 绘制路线的代理方法
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay {
MKPolylineRenderer *renderer = [[MKPolylineRenderer alloc]initWithOverlay:overlay];
//设置路线的颜色
renderer.strokeColor = [UIColor redColor];
return renderer;
}
@end
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