• 上一篇：百度地图集成--驾车路线规划

前言：上一篇介绍了驾车路线规划，本篇介绍如何进行步行路线规划

//
//  WalkController.m
//  地图
//
//  Created by apple on 2018/4/2.
//  Copyright © 2018年 zj. All rights reserved.
//

#import "WalkController.h"

#import <BaiduMapAPI_Base/BMKTypes.h> //此头文件必须放在你要用的类里面，因为里面包含了c++语言，需要把.m文件改为.mm

@interface WalkController ()<BMKMapViewDelegate,BMKRouteSearchDelegate>
{
    BMKMapView* _mapView;
    BMKRouteSearch *_routeSearch;
}
@end

@implementation WalkController
-(void)viewWillAppear:(BOOL)animated {
    [super viewWillAppear:animated];
    _mapView.delegate = self;
}

-(void)viewWillDisappear:(BOOL)animated {
    [super viewWillDisappear:animated];
    _mapView.delegate = nil; // 不用时，置nil
}
- (void)viewDidLoad {
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor whiteColor];
    self.title = @"步行路线规划";
    // 设置地图
    [self setupBMKLocation];
}
- (void)setupBMKLocation {
    _mapView = [[BMKMapView alloc]init];
    _mapView.frame = self.view.bounds;
    _mapView.delegate = self;
    [_mapView setZoomLevel:12.0];
    [self.view addSubview:_mapView];
    
    //==========================骑行路线规划=====================================
    //初始化检索对象
    _routeSearch = [[BMKRouteSearch alloc] init];
    //设置delegate，用于接收检索结果
    _routeSearch.delegate = self;
    CLLocationCoordinate2D coor[2] = {0};
   
    
    coor[0].latitude = 39.902136;
    coor[0].longitude = 116.42095;
    
    coor[1].latitude = 39.902136;
    coor[1].longitude = 116.44095;
    //构造骑行查询基础信息类
    BMKPlanNode* start = [[BMKPlanNode alloc]init];
    //    start.name = @"北京";
    //    start.cityName = @"天安门";
    start.pt = coor[0];
    BMKPlanNode* end = [[BMKPlanNode alloc]init];
    //    end.name = @"天津";
    //    end.cityName = @"天津站";
    end.pt = coor[1];
    BMKWalkingRoutePlanOption *option = [[BMKWalkingRoutePlanOption alloc]init];
    option.from = start;
    option.to = end;
    BOOL flag = [_routeSearch walkingSearch:option];
    if (flag)
    {
        NSLog(@"步行规划检索发送成功");
    }
    else
    {
        NSLog(@"步行规划检索发送失败");
    }
    
    
    
}
/**
 *返回步行搜索结果
 *@param searcher 搜索对象
 *@param result 搜索结果，类型为BMKWalkingRouteResult
 *@param error 错误号，@see BMKSearchErrorCode
 */
-(void)onGetWalkingRouteResult:(BMKRouteSearch *)searcher result:(BMKWalkingRouteResult *)result errorCode:(BMKSearchErrorCode)error{
    NSLog(@"onGetRidingRouteResult error:%d", (int)error);
    NSArray* array = [NSArray arrayWithArray:_mapView.annotations];
    [_mapView removeAnnotations:array];
    array = [NSArray arrayWithArray:_mapView.overlays];
    [_mapView removeOverlays:array];
    if (error == BMK_SEARCH_NO_ERROR) {
        BMKWalkingRouteLine* plan = (BMKWalkingRouteLine*)[result.routes objectAtIndex:0];
        NSInteger size = [plan.steps count];
        int planPointCounts = 0;
        for (int i = 0; i < size; i++) {
            BMKWalkingStep* transitStep = [plan.steps objectAtIndex:i];
            if (i == 0) {
                BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
                item.coordinate = plan.starting.location;
                item.title = @"起点";
                [_mapView addAnnotation:item]; // 添加起点标注
            }
            if(i==size-1){
                BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
                item.coordinate = plan.terminal.location;
                item.title = @"终点";
                
                [_mapView addAnnotation:item]; // 添加起点标注
            }
            // 添加annotation节点
            BMKPointAnnotation* item = [[BMKPointAnnotation alloc]init];
            item.coordinate = transitStep.entrace.location;
            item.title = transitStep.instruction;
            
            [_mapView addAnnotation:item];
            
            //轨迹点总数累计
            planPointCounts += transitStep.pointsCount;
            
        }
        
        //轨迹点
        BMKMapPoint * temppoints = new BMKMapPoint[planPointCounts];
        int i = 0;
        for (int j = 0; j < size; j++) {
            BMKRidingStep* transitStep = [plan.steps objectAtIndex:j];
            int k=0;
            for(k=0;k<transitStep.pointsCount;k++) {
                temppoints[i].x = transitStep.points[k].x;
                temppoints[i].y = transitStep.points[k].y;
                i++;
            }
            
        }
        // 通过points构建BMKPolyline
        BMKPolyline* polyLine = [BMKPolyline polylineWithPoints:temppoints count:planPointCounts];
        [_mapView addOverlay:polyLine]; // 添加路线overlay
        delete []temppoints;
        [self mapViewFitPolyLine:polyLine];
        
    } else if (error == BMK_SEARCH_AMBIGUOUS_ROURE_ADDR) {
        
        
    }
}


//根据polyline设置地图范围
- (void)mapViewFitPolyLine:(BMKPolyline *) polyLine {
    CGFloat leftTopX, leftTopY, rightBottomX, rightBottomY;
    if (polyLine.pointCount < 1) {
        return;
    }
    BMKMapPoint pt = polyLine.points[0];
    // 左上角顶点
    leftTopX = pt.x;
    leftTopY = pt.y;
    // 右下角顶点
    rightBottomX = pt.x;
    rightBottomY = pt.y;
    for (int i = 1; i < polyLine.pointCount; i++) {
        BMKMapPoint pt = polyLine.points[i];
        leftTopX = pt.x < leftTopX ? pt.x : leftTopX;
        leftTopY = pt.y < leftTopY ? pt.y : leftTopY;
        rightBottomX = pt.x > rightBottomX ? pt.x : rightBottomX;
        rightBottomY = pt.y > rightBottomY ? pt.y : rightBottomY;
    }
    BMKMapRect rect;
    rect.origin = BMKMapPointMake(leftTopX, leftTopY);
    rect.size = BMKMapSizeMake(rightBottomX - leftTopX, rightBottomY - leftTopY);
    UIEdgeInsets padding = UIEdgeInsetsMake(30, 0, 100, 0);
    BMKMapRect fitRect = [_mapView mapRectThatFits:rect edgePadding:padding];
    [_mapView setVisibleMapRect:fitRect];
}
/**
 *根据overlay生成对应的View
 *@param mapView 地图View
 *@param overlay 指定的overlay
 *@return 生成的覆盖物View
 */
- (BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id <BMKOverlay>)overlay{
    if ([overlay isKindOfClass:[BMKPolyline class]]){
        BMKPolylineView* polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay];
        polylineView.strokeColor = [UIColor redColor];
        polylineView.lineWidth = 2.0;
        
        return polylineView;
    }
    return nil;
}

#pragma mark - BMKLocationServiceDelegate 实现相关delegate 处理位置信息更新

/**
 *在地图View将要启动定位时，会调用此函数
 *@param mapView 地图View
 */
- (void)willStartLocatingUser
{
    NSLog(@"start locate");
}

/**
 *用户方向更新后，会调用此函数
 *@param userLocation 新的用户位置
 */
- (void)didUpdateUserHeading:(BMKUserLocation *)userLocation
{
    NSLog(@"heading is %@",userLocation.heading);
}
/**
 *用户位置更新后，会调用此函数
 *@param userLocation 新的用户位置
 */
- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation
{
    
    NSLog(@"didUpdateUserLocation lat %f,long %f", userLocation.location.coordinate.latitude, userLocation.location.coordinate.longitude);
    
    BMKCoordinateRegion region;
    region.center.latitude = userLocation.location.coordinate.latitude;
    region.center.longitude = userLocation.location.coordinate.longitude;
    region.span.latitudeDelta = 0.2;
    region.span.longitudeDelta = 0.2;
    if (_mapView)
    {
        _mapView.region = region;
    }
    [_mapView setZoomLevel:19.0];
    
    //添加当前位置的标注
    CLLocationCoordinate2D coord;
    coord.latitude = userLocation.location.coordinate.latitude;
    coord.longitude = userLocation.location.coordinate.longitude;
    
    BMKPointAnnotation *_pointAnnotation = [[BMKPointAnnotation alloc] init];
    _pointAnnotation.coordinate = coord;
    
    _pointAnnotation.title = @"我的位置";// 要显示的标题；注意：如果不设置title,无法点击annotation,也无法使用回调函数
    dispatch_async(dispatch_get_main_queue(), ^{
        [_mapView removeOverlays:_mapView.overlays];
        [_mapView setCenterCoordinate:coord animated:true];
        [_mapView addAnnotation:_pointAnnotation];
        // [_mapView selectAnnotation:_pointAnnotation animated:NO]; 默认选中大头针
        
    });
    
}
//设置标注样式
-(BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id<BMKAnnotation>)annotation{
    //大头针系统样式
    if ([annotation isKindOfClass:[BMKPointAnnotation class]]) {
        static NSString *pointReuseIndentifier = @"pointReuseIndentifier";
        BMKPinAnnotationView*annotationView = (BMKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:pointReuseIndentifier];
        if (annotationView == nil) {
            annotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:pointReuseIndentifier];
        }
        annotationView.pinColor = BMKPinAnnotationColorPurple;
        annotationView.canShowCallout= YES;      //设置气泡可以弹出，默认为NO
        annotationView.animatesDrop=YES;         //设置标注动画显示，默认为NO
        annotationView.draggable = YES;          //设置标注可以拖动，默认为NO
        return annotationView;
    }
    return nil;
}
/**
 *在地图View停止定位后，会调用此函数
 *
 */
- (void)didStopLocatingUser
{
    NSLog(@"stop locate");
}

/**
 *定位失败后，会调用此函数
 *
 *@param error 错误号，参考CLError.h中定义的错误号
 */
- (void)didFailToLocateUserWithError:(NSError *)error
{
    NSLog(@"location error");
    //    NSString *city = [[NSUserDefaults standardUserDefaults] objectForKey:@"cityNmae"];
    //    [self.cityBtn setTitle:city forState:UIControlStateNormal];
}


- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

到此就结束了步行路线规划，后续会更新关于地图的别的功能，尽请期待.....
demo地址
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