ios - 在iOS的标记群集中自定义标记图标

Question

有什么办法可以在标记集群中更改默认标记图标？

这是我的代码...

- (void)viewDidLoad {
    [super viewDidLoad];

    // Set up the cluster manager with a supplied icon generator and renderer.
    id<GMUClusterAlgorithm> algorithm = [[GMUNonHierarchicalDistanceBasedAlgorithm alloc] init];
    id<GMUClusterIconGenerator> iconGenerator = [[GMUDefaultClusterIconGenerator alloc] init];
    id<GMUClusterRenderer> renderer = [[GMUDefaultClusterRenderer alloc] initWithMapView:googleMapView
                                                                    clusterIconGenerator:iconGenerator];
    clusterManager = [[GMUClusterManager alloc] initWithMap:googleMapView
                                                  algorithm:algorithm
                                                   renderer:renderer];

    // Register self to listen to both GMUClusterManagerDelegate and
    // GMSMapViewDelegate events.
    [clusterManager setDelegate:self mapDelegate:self];

}

- (void)loadView {
    // Create a GMSCameraPosition that tells the map to display the
    _camera = [GMSCameraPosition cameraWithLatitude:29.3117
                                          longitude:47.4818
                                               zoom:8];
    googleMapView = [GMSMapView mapWithFrame:CGRectZero camera:_camera];
    googleMapView.myLocationEnabled = YES;
    googleMapView.settings.compassButton = YES;
    googleMapView.settings.myLocationButton = YES;
    googleMapView.delegate = self;

    self.view = googleMapView;
}

-(void)setLocation:(CLLocation *)location
{
    CLLocationCoordinate2D center = CLLocationCoordinate2DMake(location.coordinate.latitude, location.coordinate.longitude);
    [googleMapView animateToLocation:center];
    [googleMapView animateToZoom:12];

    NSMutableArray *array = [NSMutableArray arrayWithObjects:
                             @"29.0827,48.1363",
                             @"29.2679,47.9927",
                             @"29.348706, 48.092425",
                             @"29.340925, 48.088477",
                             @"29.324912, 48.089850",
                             @"29.330599, 47.990630",
                             @"29.300364, 47.960589",
                             @"29.271917, 47.918017",
                             @"29.3032,47.936", nil];

    //remove all clusters before adding clusters
    [clusterManager clearItems];

    for (int i = 0; i < [array count]; i++)
    {
        center = CLLocationCoordinate2DMake ([[array[i] componentsSeparatedByString:@","][0] floatValue], [[array[i] componentsSeparatedByString:@","][1] floatValue]);

        // Add items to the cluster manager.
        NSString *name = nil;//[NSString stringWithFormat:@"Item %d", i];
        id<GMUClusterItem> item =[[POIItem alloc] initWithPosition:center
                                                              name:name];
        [clusterManager addItem:item];
    }
    // Call cluster() after items have been added
    // to perform the clustering and rendering on map.
    [clusterManager cluster];
}

请指导我...

Answer 1

我看到您使用了google-maps-ios-utils。问题在于尚无用于更改标记图标的API。您只能直接在库的代码中执行此操作。我已经将自定义代码粘贴到了方法中

- (GMSMarker *)markerWithPosition:(CLLocationCoordinate2D)position
                         from:(CLLocationCoordinate2D)from
                     userData:(id)userData
                  clusterIcon:(UIImage *)clusterIcon
                     animated:(BOOL)animated{
//...
    if (clusterIcon != nil) {
        marker.icon = clusterIcon;
        marker.groundAnchor = CGPointMake(0.5, 0.5);
    } else {
    if([[marker.userData class] isSubclassOfClass:[POIItem class]]){
        POIItem *item = (POIItem *)marker.userData;
        MarkerIcon* markerView = (MarkerIcon *)[[NSBundle mainBundle] loadNibNamed:@"MarkerIcon" owner:marker options:nil][0];
        marker.iconView = markerView;
        marker.groundAnchor = CGPointMake(0.5, 0.5);
    }
   }
}

这不是更改这样的代码的好方法。但是那一刻我找不到更好的解决方案。