//xxx.m 文件#import "BasicMapAnnotation.h"#import "BMKClusterManager.h"/* *点聚合Annotation */@interface ClusterAnnotation : BMKPointAnnotation///所包含annotation个数@property (nonatomic, assign) NSInteger size;@end@implementation ClusterAnnotation@synthesize size = _size;@end/* *点聚合AnnotationView */@interface ClusterAnnotationView : BMKPinAnnotationView {    }@property (nonatomic, assign) NSInteger size;@property (nonatomic, strong) UILabel *label;@end@implementation ClusterAnnotationView@synthesize size = _size;@synthesize label = _label;- (id)initWithAnnotation:(id
    
     )annotation reuseIdentifier:(NSString *)reuseIdentifier {    self = [super initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];    if (self) {        [self setBounds:CGRectMake(0.f, 0.f, 55.f, 55.f)];        _label = [[UILabel alloc] initWithFrame:CGRectMake(0.f, 0.f, 22.f, 22.f)];        _label.textColor = [UIColor whiteColor];        _label.font = [UIFont systemFontOfSize:11];        _label.textAlignment = NSTextAlignmentCenter;        [self addSubview:_label];        self.alpha = 1;    }    return self;}- (void)setSize:(NSInteger)size {    _size = size;    if (_size == 1) {        self.label.hidden = YES;        self.pinColor = BMKPinAnnotationColorRed;        return;    }    self.label.hidden = NO;    if (size > 20) {        self.label.backgroundColor = [UIColor redColor];    } else if (size > 10) {        self.label.backgroundColor = [UIColor purpleColor];    } else if (size > 5) {        self.label.backgroundColor = [UIColor blueColor];    } else {        self.label.backgroundColor = [UIColor greenColor];    }    _label.text = [NSString stringWithFormat:@"%ld", (long)size];}@end@interface WrapperMainViewController ()
     
      {    IBOutlet BMKMapView* _mapView;    BMKClusterManager *_clusterManager;//点聚合管理类    NSInteger _clusterZoom;//聚合级别    NSMutableArray *_clusterCaches;//点聚合缓存标注}@end@implementation WrapperMainViewController- (void)viewDidLoad {    [super viewDidLoad];        // Do any additional setup after loading the view from its nib.    //[super.navigationController setNavigationBarHidden:NO animated:FALSE];//    [self.navigationController setNavigationBarHidden:YES];    //    [self.scrollViewMain addSubview:viewMain];    [self.scrollViewMain setContentSize:CGSizeMake(self.view.bounds.size.width, self.view.bounds.size.height - 106)];        mutableArrayButton = [[NSMutableArray alloc] init];        [self addHeader];        labelCity.text = [[AppDelegate instance].dicCurrentCity valueForKeyPath:@"cname"];    labelCity.textAlignment = NSTextAlignmentCenter;    //[btnCity setTitle:[[AppDelegate instance].dicCurrentCity valueForKeyPath:@"cname"] forState:UIControlStateNormal];        [[LocationManagement sharedInstance] startGPS];    [LocationManagement sharedInstance].delegate = self;        [super getAPPVersion:NO AppId:@"1"];    UITapGestureRecognizer *click = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(disappear)];    [blackAlpha addGestureRecognizer:click];    blackAlpha.frame = CGRectMake(0, 568, self.view.bounds.size.width, self.view.bounds.size.height);        [self.view addSubview:blackAlpha];        weatherTableView.frame = CGRectMake(0, 568, weatherTableView.bounds.size.width, 200);       [self.view addSubview:weatherTableView];        if (iPhone4s) {        scrollViewMain.contentSize = CGSizeMake(scrollViewMain.contentSize.width, 548);    }        _clusterCaches = [[NSMutableArray alloc] init];    for (NSInteger i = 3; i < 21; i++) {        [_clusterCaches addObject:[NSMutableArray array]];    }        //点聚合管理类（初始化）    _clusterManager = [[BMKClusterManager alloc] init];}- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}- (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}//更新聚合状态- (void)updateClusters {    _clusterZoom = (NSInteger)_mapView.zoomLevel;    @synchronized(_clusterCaches) {        __block NSMutableArray *clusters = [_clusterCaches objectAtIndex:(_clusterZoom - 3)];                if (clusters.count > 0) {            [_mapView removeAnnotations:_mapView.annotations];            [_mapView addAnnotations:clusters];        } else {            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 (int i=0;i<[array count];i++) {                        BMKCluster *item=array[i];                        ClusterAnnotation *annotation = [[ClusterAnnotation alloc] init];                        annotation.coordinate = item.coordinate;                        annotation.size = item.size;//                        annotation.title = [NSString stringWithFormat:@"我是%ld个", (unsigned long)item.size];                        annotation.title = [NSString stringWithFormat:@"%d",i];                        ParkEntity *entity = homeEntity.mutableArrayPark[i];                        annotation.subtitle = entity.album_thumb;                        [clusters addObject:annotation];                    }                    [_mapView removeAnnotations:_mapView.annotations];                    [_mapView addAnnotations:clusters];                });            });        }    }}#pragma mark - BMKMapViewDelegate Override （单个标注）//-(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//        newAnnotationView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:annotation.subtitle]]];        newAnnotationView.image=[UIImage imageNamed:@"地图图标_景点@2x"];//        return newAnnotationView;//    }////    return nil;//}// 根据anntation生成对应的View- (BMKAnnotationView *)mapView:(BMKMapView *)mapView viewForAnnotation:(id 
       
        )annotation{    //普通annotation    NSString *AnnotationViewID = @"ClusterMark";    ClusterAnnotation *cluster = (ClusterAnnotation*)annotation;    ClusterAnnotationView *annotationView = [[ClusterAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:AnnotationViewID];    annotationView.size = cluster.size;    annotationView.canShowCallout = NO;//在点击大头针的时候会弹出那个黑框框    annotationView.draggable = NO;//禁止标注在地图上拖动    annotationView.annotation = cluster;    annotationView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:annotation.subtitle]]];    return annotationView;    }/** *当点击annotation view弹出的泡泡时，调用此接口 *@param mapView 地图View *@param view 泡泡所属的annotation view */- (void)mapView:(BMKMapView *)mapView annotationViewForBubble:(BMKAnnotationView *)view {    if ([view isKindOfClass:[ClusterAnnotationView class]]) {        ClusterAnnotation *clusterAnnotation = (ClusterAnnotation*)view.annotation;        if (clusterAnnotation.size > 1) {            [mapView setCenterCoordinate:view.annotation.coordinate];            [mapView zoomIn];        }    }}/** *地图初始化完毕时会调用此接口 *@param mapview 地图View */- (void)mapViewDidFinishLoading:(BMKMapView *)mapView {    [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];    }}//标注 单击事件-(void)mapView:(BMKMapView *)mapView didSelectAnnotationView:(BMKAnnotationView *)view {   if ([view isKindOfClass:[ClusterAnnotationView class]]) {        ClusterAnnotation *clusterAnnotation = (ClusterAnnotation*)view.annotation;        if (clusterAnnotation.size > 1) {            [mapView setCenterCoordinate:view.annotation.coordinate];            [mapView zoomIn];        }else {            ParkEntity *entity = [homeEntity.mutableArrayPark objectAtIndex:[clusterAnnotation.title integerValue]];            if ([entity.is_business isEqualToString:@"0"] == YES) {                IntroduceViewController *vc = [[IntroduceViewController alloc] init];                vc.parkEntity = entity;                [self.navigationController pushViewController:vc animated:YES];            } else {                WrapperViewController *vc = [[WrapperViewController alloc] init];                vc.parkEntity = entity;                [self.navigationController pushViewController:vc animated:YES];            }        }    }}@end
       
      
     
    

//核心代码//添加单点标注for(int i=0;i<[homeEntity.mutableArrayPark count];i++){    ParkEntity *entity = homeEntity.mutableArrayPark[i];    // 添加一个PointAnnotation (景点标注)    BMKPointAnnotation* annotation = [[BMKPointAnnotation alloc]init];    CLLocationCoordinate2D coor;    coor.latitude = [entity.latitude floatValue];    coor.longitude = [entity.longitude floatValue];    annotation.coordinate = coor;    annotation.title = entity.title;    annotation.subtitle=entity.album_thumb;    [_mapView addAnnotation:annotation];    }   [_clusterManager clearClusterItems];//清除点聚合元素                       //添加多点标注（点聚合）for(int i=0;i<[homeEntity.mutableArrayPark count];i++){    ParkEntity *entity = homeEntity.mutableArrayPark[i];    BMKClusterItem *clusterItem = [[BMKClusterItem alloc] init];    clusterItem.coor = CLLocationCoordinate2DMake([entity.latitude floatValue],[entity.longitude floatValue]);    [_clusterManager addClusterItem:clusterItem];}

ps：

1、需要用到 Cluster 中的一些类（BMKClusterAlgorithm、BMKClusterItem、BMKClusterManager、BMKClusterQuadtree）

2、annotationView.image  设置标注图片的时候，缩小地图汇出现图片重叠的问题。

可以通过设置 BMKClusterAlgorithm.m 文件中的 #define MAX_DISTANCE_IN_DP    400 //300dp  来设置点聚合算法的距离

3、[_clusterManager clearClusterItems];//清除点聚合元素

                            for(int i=0;i<[homeEntity.mutableArrayPark count];i++){

                                ParkEntity *entity = homeEntity.mutableArrayPark[i];

                                BMKClusterItem *clusterItem = [[BMKClusterItem alloc] init];

                                clusterItem.coor = CLLocationCoordinate2DMake([entity.latitude floatValue],[entity.longitude floatValue]);

                                [_clusterManager addClusterItem:clusterItem];

                            }

//移动地图

ParkEntity *entity = homeEntity.mutableArrayPark[0];

                          CLLocation *location = [[CLLocation alloc] initWithLatitude:[entity.latitude doubleValue] longitude:[entity.longitude doubleValue]];

                          [_mapView setCenterCoordinate:location.coordinate animated:YES];

                          [self updateClusters];

4、

//删除标注

    NSArray* array = [NSArray arrayWithArray:_mapView.annotations];

    [_mapView removeAnnotations:array];

//清除地图缓存

    [_clusterCaches removeAllObjects];

    for (NSInteger i = 3; i < 21; i++) {

        [_clusterCaches addObject:[NSMutableArray array]];

    }