百度地图demo--定位, 步行路线检索, 画线.

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appdelegate.h 文件


#import#import@interface AppDelegate : UIResponder

@property (strong, nonatomic) UIWindow *window;

@property (nonatomic, strong) BMKMapManager *mapManager;

@property (nonatomic, strong) UINavigationController *navigationController;

@end

appdelegate.m 文件


#import "AppDelegate.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

self.mapManager = [[BMKMapManager alloc]init];

BOOL ret = [_mapManager start:@"ZDWvBohcN1G7cQUvid5rj1D7P1ilHAe0"  generalDelegate:nil];

if (!ret) {

NSLog(@"manager start failed!");

}

[self.window addSubview:self.navigationController.view];

[self.window makeKeyAndVisible];

return YES;

}

viewcontroller.m文件



#import "ViewController.h"

#import//引入地图功能所有的头文件

#import//引入定位功能所有的头文件

#import

#import "SVProgressHUD.h"

#import

#import


@interface ViewController ()


@property (nonatomic, strong)BMKMapView *mapView;

@property (nonatomic, strong)BMKRouteSearch *routeSearch;

@property (nonatomic, strong)BMKLocationService *locService;

@property (nonatomic, strong)BMKUserLocation *userLocation;

@property (nonatomic, strong)BMKPolyline* polyline;

@property(nonatomic,weak)UIButton *backBtn;

@property(nonatomic,weak)UILabel *distanceLabel;

@end

@implementation ViewController


/**

总体流程: 开启实时定位-->每次得到用户位置-->请求步行路线-->解析-->在地图上画线

*/


- (void)viewDidLoad {

[super viewDidLoad];

BMKMapView* mapView = [[BMKMapView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];

_mapView =mapView;

self.view = mapView;

//1. 定位

_mapView.showsUserLocation = YES;//显示定位图层

//初始化BMKLocationService

_locService = [[BMKLocationService alloc]init];

_locService.delegate = self;

//启动LocationService

[_locService startUserLocationService];

_mapView.userTrackingMode = BMKUserTrackingModeFollow;

//这个button用于回到当前位置

[self setupBtn];

}


- (void)setupBtn{

UIButton *backBtn = [UIButton new];

[backBtn setTitle:@"回到当前位置" forState:UIControlStateNormal];

[backBtn setImage:[UIImage imageNamed:@"tabbar_compose_background_icon_return"] forState:UIControlStateNormal];

[backBtn sizeToFit];

[self.mapView addSubview:backBtn];//62 135 47

backBtn.titleLabel.font = [UIFont boldSystemFontOfSize:13];

backBtn.frame = CGRectMake([UIScreen mainScreen].bounds.size.width - 150, 50, 150, 50);

[backBtn setTitleColor:[UIColor colorWithRed:62/255.0 green:135/255.0 blue:47/255.0 alpha:1] forState:UIControlStateNormal];

[backBtn addTarget:self action:@selector(goToUserLocation:) forControlEvents:UIControlEventTouchUpInside];

_backBtn = backBtn;

_backBtn.hidden = YES;

UILabel *distanceLabel = [[UILabel alloc]init];

distanceLabel.text = @"miiii";

[self.mapView addSubview:distanceLabel];

_distanceLabel = distanceLabel;

distanceLabel.frame = CGRectMake(self.mapView.center.x, self.mapView.center.y - 200, 200, 50);

}


//3. 分析路线, 画图

- (void)onGetWalkingRouteResult:(BMKRouteSearch*)searcher result:(BMKWalkingRouteResult*)result errorCode:(BMKSearchErrorCode)error{

if (error) {

NSLog(@"%u",error);

}else{

BMKRouteLine *line = result.routes[0];

_distanceLabel.text = [NSString stringWithFormat:@"%d",line.distance];

int count = 0;

for (int i = 0; i < line.steps.count; i++) {

BMKWalkingStep* step = line.steps[i];

count += step.pointsCount;

}

CLLocationCoordinate2D coors[count];

int count2 = 0;

for (int i = 0; i < line.steps.count; i++) {

BMKWalkingStep* step = line.steps[i];

for (int j = 0; j < step.pointsCount; j++) {

BMKMapPoint p = step.points[j];

//            NSLog(@"%f, %f", p.x, p.y);

CLLocationCoordinate2D annotationCoord = BMKCoordinateForMapPoint(p);

coors[count2] = annotationCoord;

count2++;

}

}

if (self.polyline) {

[self.mapView removeOverlays:self.mapView.overlays];

}

self.polyline = [BMKPolyline polylineWithCoordinates:coors count:count];

[_mapView addOverlay:_polyline];

}

}


//返回自定义的路线线条样式- (BMKOverlayView *)mapView:(BMKMapView *)mapView viewForOverlay:(id)overlay{

if ([overlay isKindOfClass:[BMKPolyline class]]){

BMKPolylineView* polylineView = [[BMKPolylineView alloc] initWithOverlay:overlay];

polylineView.strokeColor = [[UIColor colorWithRed:arc4random_uniform(255)/255.0 green:arc4random_uniform(255)/255.0 blue:arc4random_uniform(255)/255.0 alpha:1] colorWithAlphaComponent:0.8];

polylineView.lineWidth = 3.0;

[SVProgressHUD dismiss];

self.backBtn.hidden = NO;

return polylineView;

}

return nil;

}


//2. 处理位置坐标更新

- (void)didUpdateBMKUserLocation:(BMKUserLocation *)userLocation

{

//    NSLog(@"didUpdateUserLocation lat %f,long %f",userLocation.location.coordinate.latitude,userLocation.location.coordinate.longitude);

[_mapView updateLocationData:userLocation];

self.userLocation = userLocation;

//    BMKPointAnnotation* annotation = [[BMKPointAnnotation alloc]init];

//    annotation.coordinate = userLocation.location.coordinate;

//    annotation.title = @"这里是...";

//    [_mapView addAnnotation:annotation];

//

self.routeSearch = [[BMKRouteSearch alloc]init];

_routeSearch.delegate = self;

BMKPlanNode *start = [[BMKPlanNode alloc]init];

start.pt = self.userLocation.location.coordinate;

BMKPlanNode *end = [[BMKPlanNode alloc]init];

end.pt = CLLocationCoordinate2DMake(31.17034,121.412371);

BMKWalkingRoutePlanOption *option = [[BMKWalkingRoutePlanOption alloc]init];

option.from = start;

option.to = end;

//发起步行路线检索(检索成功后会调用代理方法"onGetWalkingRouteResult...")

BOOL res = [self.routeSearch walkingSearch:option];

NSLog(@"res = %d", res);

if (self.polyline == nil) {//第一次加载地图时间比较长, 使用HUD, 后面不再使用.

[SVProgressHUD showWithStatus:@"路线加载中"];

}

}

-(void)viewDidAppear:(BOOL)animated{

[super viewDidAppear:animated];

}


//这里可以自定义用户图标//- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id)annotation

//{

//    if ([annotation isKindOfClass:[BMKPointAnnotation class]]) {

//        BMKPinAnnotationView *newAnnotationView = [[BMKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:@"myAnnotation"];

//        newAnnotationView.pinColor = BMKPinAnnotationColorPurple;

//        newAnnotationView.animatesDrop = YES;// 设置该标注点动画显示

//        return newAnnotationView;

//    }

//    return nil;

//}

-(void)viewWillAppear:(BOOL)animated

{

[_mapView viewWillAppear];

_mapView.delegate = self; // 此处记得不用的时候需要置nil,否则影响内存的释放

}

-(void)viewWillDisappear:(BOOL)animated

{

[_mapView viewWillDisappear];

_mapView.delegate = nil; // 不用时,置nil

}

-(void)goToUserLocation:(id)sender {

[self.mapView setCenterCoordinate:self.userLocation.location.coordinate];

}

@end

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