百度点聚合功能,自定义针头功能

 

关于怎么导入百度地图SDK与创建应用就不多说了,百度的文档应该比我说的更详细,下面直接正文吧:

demo图:

demo路径在最下面;

1.首先地图的初始化

- (void)viewWillAppear:(BOOL)animated {
  [super viewWillAppear:animated];
}

- (void)setupView {

  /// 地图
  _mapView = [[BMKMapView alloc]init];

  [_mapView setMapType:BMKMapTypeStandard];// 地图类型 ->卫星/标准、
  _mapView.showsUserLocation = YES;
  _mapView.gesturesEnabled = YES;
  _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
  _mapView.frame = self.view.bounds;
  [self.view addSubview:_mapView];
}
// 地图的初始化
- (void)setupMapService {
  _locService = [[BMKLocationService alloc]init];
  _locService.delegate = self;
  _locService.desiredAccuracy = kCLLocationAccuracyBest;
  _locService.distanceFilter = 10;//大于100米
  [_locService startUserLocationService];

  _geoCodeSerch = [[BMKGeoCodeSearch alloc] init];
  _geoCodeSerch.delegate = self;

  _mapView.showsUserLocation = NO;//先关闭显示的定位图层
  _mapView.userTrackingMode = BMKUserTrackingModeFollow;//设置定位的状态
  _mapView.showsUserLocation = YES;//显示定位图层

  _clusterManager = [[BMKClusterManager alloc] init];

  //初始化检索对象
  self.districtSearch = [[BMKDistrictSearch alloc] init];
  //设置delegate,用于接收检索结果
  self.districtSearch.delegate = self;

  //在此处理正常结果
  _clusterCaches = [[NSMutableArray alloc] init];
   (NSInteger i = 3; i < 22; i++) {
    [_clusterCaches addObject:[NSMutableArray array]];
  }
}

2.地图的开始与加载完毕



/**
*地图初始化完毕时会调用此接口
*@param mapView 地图View
*/
- (void)mapViewDidFinishLoading:(BMKMapView *)mapView {
  BMKLocationViewDisplayParam *displayParam = [[BMKLocationViewDisplayParam alloc]init];
  displayParam.isAccuracyCircleShow = NO;//精度圈是否显示
  [_mapView updateLocationViewWithParam:displayParam];

  BMKCoordinateRegion region ;//表示范围的结构体
  region.center = _mapView.centerCoordinate;//中心点
  self.cCoordinate = _mapView.centerCoordinate;//中心点
  region.span.latitudeDelta = 0.002;//经度范围(设置为0.1表示显示范围为0.2的纬度范围)
  region.span.longitudeDelta = 0.002;//纬度范围
  [_mapView setRegion:region animated:YES];
  [self updateClusters];
}

/**
*地图渲染每一帧画面过程中,以及每次需要重绘地图时(例如添加覆盖物)都会调用此接口
*@param mapView 地图View
*@param status 此时地图的状态
*/
- (void)mapView:(BMKMapView *)mapView onDrawMapFrame:(BMKMapStatus *)status {
  if (_clusterZoom != 0 && _clusterZoom != (NSInteger)mapView.zoomLevel) {
    [self updateClusters];
  }
}

3.地图的位置发生变化



- (void)mapView:(BMKMapView *)mapView regionDidChangeAnimated:(BOOL)animated {
  //屏幕坐标转地图经纬度
  CLLocationCoordinate2D MapCoordinate = [_mapView convertPoint:_mapView.center toCoordinateFromView:_mapView];

  if (_reverseGeoCodeOption==nil) {
    //初始化反地理编码类
    _reverseGeoCodeOption= [[BMKReverseGeoCodeOption alloc] init];
  }

  //需要逆地理编码的坐标位置
  _reverseGeoCodeOption.reverseGeoPoint =MapCoordinate;
  [_geoCodeSerch reverseGeoCode:_reverseGeoCodeOption];
  // 如果你是请求自己后台的数据可以在这里请求,可以省去下面检索回来的数据,由于我的是demo,所以下面是必须要的
  BMKNearbySearchOption *option = [[BMKNearbySearchOption alloc]init];
  option.pageIndex = 1;
  option.pageCapacity = 10;
  option.location = mapView.centerCoordinate;

  option.keyword = @"小吃";
  BOOL flag = [self.poiSearch poiSearchNearBy:option];
  if(flag)
  {
    NSLog(@"周边检索发送成功");
  } else {
    NSLog(@"周边检索发送失败");
  }
}

// 当地图发生改变之后,检索并
//实现PoiSearchDeleage处理回调结果
- (void)onGetPoiResult:(BMKPoiSearch*)searcher result:(BMKPoiResult*)poiResultList errorCode:(BMKSearchErrorCode)error
{
  if (error == BMK_SEARCH_NO_ERROR) {
    //在此处理正常结果
  }
  else if (error == BMK_SEARCH_AMBIGUOUS_KEYWORD){
  //当在设置城市未找到结果,但在其他城市找到结果时,回调建议检索城市列表
  // result.cityList;
    NSLog(@"起始点有歧义");
  } else {
    NSLog(@"抱歉,未找到结果");
  }
  // 清空缓存数据
  [_clusterManager clearClusterItems];
  for (BMKPoiInfo *poiInfo in poiResultList.poiInfoList) {
  XJCluster *cluster = [[XJCluster alloc] init];
  cluster.name = poiInfo.name;
  cluster.pt = poiInfo.pt;
  // 添加数据
  [self addAnnoWithPT:cluster];
  }
}

4.更新点聚合状态

//更新聚合状态
- (void)updateClusters {

  _clusterZoom = (NSInteger)_mapView.zoomLevel;
  @synchronized(_clusterCaches) {

  NSMutableArray *clusters = [NSMutableArray array];
  dispatch_async(dispatch_get_global_queue(0, 0), ^{
  ///获取聚合后的标注
  __block NSArray *array = [_clusterManager getClusters:_clusterZoom];

    dispatch_async(dispatch_get_main_queue(), ^{
      for (BMKCluster *item in array) {
        XJClusterAnnotation *annotation = [[XJClusterAnnotation alloc] init];
        annotation.coordinate = item.coordinate;
        annotation.size = item.size;
        annotation.title = item.title;
        annotation.cluster = item.cluster;
        [clusters addObject:annotation];
       }
        [_mapView removeOverlays:_mapView.overlays];
        [_mapView removeAnnotations:_mapView.annotations];
        [_mapView addAnnotations:clusters];

      });
    });
  }
}

demo : https://github.com/SingGitHub/BMKMapClusterView

posted @ 2017-05-03 23:37  SingCnblogs  阅读(817)  评论(0编辑  收藏  举报