百度地图点聚定制合与自定义针头

项目介绍：

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：

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，论文，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]; for (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端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，开题报告，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]; }); }); } }

效果图：

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