导航 -MapKit - 获取路线信息绘制导航路线
#import "PPViewController.h"
#import <MapKit/MapKit.h>
#import "PPAnnotation.h"
@interface PPViewController ()<MKMapViewDelegate>
/**
* 编码对象
*/
@property (nonatomic, strong) CLGeocoder *geocoder;
@property (weak, nonatomic) MKMapView *mapView;
@end
@implementation PPViewController
// 懒加载
- (CLGeocoder *)geocoder{
if (!_geocoder) {
_geocoder = [[CLGeocoder alloc] init];
}
return _geocoder;
}
- (void)drawRoute:(id)sender {
// 2. 利用GEO对象进行地理编码,获取到地标对象(CLPlacemark)
[self.geocoder geocodeAddressString:self.startStr completionHandler:^(NSArray *placemarks, NSError *error) {
if (placemarks.count == 0) return;
// 开始位置地标
CLPlacemark *startPlacemark = [placemarks firstObject];
[self.geocoder geocodeAddressString:self.endStr completionHandler:^(NSArray *placemarks, NSError *error) {
if (placemarks.count == 0) return;
// 添加两个大头针 - 终点,起点
PPAnnotation *startAnno = [[PPAnnotation alloc] init];
startAnno.title = startPlacemark.locality;
startAnno.subtitle = startPlacemark.name;
startAnno.coordinate = startPlacemark.location.coordinate;
[self.mapView addAnnotation:startAnno];
// 结束位置地标
CLPlacemark *endPlacemark = [placemarks firstObject];
PPAnnotation *endAnno = [[PPAnnotation alloc] init];
endAnno.title = endPlacemark.locality;
endAnno.subtitle = endPlacemark.name;
endAnno.coordinate = endPlacemark.location.coordinate;
[self.mapView addAnnotation:endAnno];
// 3. 再利用获取到的地标对象(CLPlacemark)创建(MKpalcemark) - 起点的item
[self startDirectionsWithStartClPlacemark:startPlacemark endCLPlacemark:endPlacemark];
}];
}];
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
MKMapView *mapView = [[MKMapView alloc] initWithFrame:[UIScreen mainScreen].bounds];
self.mapView = mapView;
[self.view addSubview:self.mapView];
// 设置代理
self.mapView.delegate = self;
// 设置模式
self.mapView.mapType = MKMapTypeStandard;
// 设置跟踪
self.mapView.userTrackingMode = MKUserTrackingModeFollow;
// 设置xuanzhuan
self.mapView.rotateEnabled = NO;
//
UIButton *button = [UIButton buttonWithType:UIButtonTypeContactAdd];
button.frame = CGRectMake(100, 100, 100, 100);
[self.view addSubview:button];
[button addTarget:self action:@selector(drawRoute:) forControlEvents:UIControlEventTouchUpInside];
}
/**
* 发送请求, 获取路线信息
*
* @param startCLPlacemark 起点地标
* @param endClPlacemark 终点地标
*/
- (void)startDirectionsWithStartClPlacemark:(CLPlacemark *)startCLPlacemark endCLPlacemark:(CLPlacemark *)endCLPlacemark
{
// 0. 创建起点对象和终点对象
MKPlacemark *startMKPlacemark = [[MKPlacemark alloc] initWithPlacemark:startCLPlacemark];
MKMapItem *startItem = [[MKMapItem alloc] initWithPlacemark:startMKPlacemark];
MKPlacemark *endMKPlacemark = [[MKPlacemark alloc] initWithPlacemark:endCLPlacemark];
MKMapItem *endItem = [[MKMapItem alloc] initWithPlacemark:endMKPlacemark];
// 1. 发送请求到苹果服务器获取导航路线
// 创建request对象, 说明起点 - 终点
MKDirectionsRequest *request = [[MKDirectionsRequest alloc] init];
request.source = startItem;
request.destination = endItem;
MKDirections *directions = [[MKDirections alloc] initWithRequest:request];
// 2. 根据服务器返回的路线信息, 绘制导航路线
// 计算完成以后, 调用block, 会返回一个response(包含路线信息)
[directions calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) {
// 2.1 打印返回的路线信息
for (MKRoute *route in response.routes) {
LogRed(@"%f -- %f",route.distance / 1000, route.expectedTravelTime / 3600);
// 2.2 绘制路线 - 往地图上添加遮盖
// 传递当前路线的几何遮盖给地图, 地图就会根据遮盖自动绘制路线
// 当系统开始绘制路线时, 会询问线条宽度和颜色等
[self.mapView addOverlay:route.polyline];
NSArray *array = route.steps;
for (MKRouteStep *step in array) {
LogGreen(@"%@ -- %f",step.instructions, step.distance);
}
}
}];
}
#pragma mark - MKMapViewDelegate
- (void)mapView:(MKMapView *)mapView didUpdateUserLocation:(MKUserLocation *)userLocation
{
// 移动地图到当前用户所在位置
[self.mapView setCenterCoordinate:userLocation.location.coordinate animated:YES];
}
/**
* 绘制路线时会调用(添加遮盖时会调用)
*
* @param mapView mapView
* @param overlay
*/
- (MKOverlayRenderer *)mapView:(MKMapView *)mapView rendererForOverlay:(id<MKOverlay>)overlay
{
// 创建一条路径遮盖
MKPolylineRenderer*line = [[MKPolylineRenderer alloc] initWithPolyline:overlay];
line.lineWidth = 10; // 路线宽度
line.strokeColor = [UIColor redColor];//路线宽度
return line;
}
