ios - 使用 GMUClusterManager 的自定义标记

Question

我想使用 GMUClusterManager 显示自定义标记。我遵循了标记聚类的所有步骤 here .

但是有像这样的蓝色和红色图标。

但是当我放大该 map 时，它只显示红色标记，但我不想要那个。

有一个实例方法，我已经在其中实现了我的逻辑但没有用。

    - (instancetype)initWithMapView:(GMSMapView *)mapView clusterIconGenerator:(id<GMUClusterIconGenerator>)iconGenerator
{
    if ((self = [super init])) {

        GMSMarker *marker= [GMSMarker markerWithPosition:CLLocationCoordinate2DMake(24.0, 75.30)];

        UIView *customMarker =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 63, 40)];
        customMarker.backgroundColor = [UIColor blueColor];

        marker.iconView = [self EmployeeMarker:0] ;
        marker.appearAnimation = kGMSMarkerAnimationPop;
        marker.map = mapView;
    }
    return self;
}

-(UIView *)EmployeeMarker:(int)labelTextInt{
    UIView *customMarker =[[UIView alloc] initWithFrame:CGRectMake(0, 0, 63, 40)];
    UIImageView *imgViewCustomMarker = [[UIImageView alloc]initWithFrame:CGRectMake(0, 15, 24, 25)];
    imgViewCustomMarker.image = [UIImage imageNamed:@"iconMapUser.png"];
    [customMarker addSubview:imgViewCustomMarker];
    UIView *viewRatingCustom = [[UIView alloc] initWithFrame:CGRectMake(15, 0, 40, 15)];
    viewRatingCustom.backgroundColor = [UIColor colorWithRed:192.0/255.0 green:192.0/255.0 blue:192.0/255.0 alpha:1.0];
    UILabel *lblRatingEmployees = [[UILabel alloc] initWithFrame:CGRectMake(8, 1, 17,8)];
    lblRatingEmployees.textColor = [UIColor colorWithRed:0.00/255.0 green:100.0/255.0 blue:150.0/255.0 alpha:1.0];
    lblRatingEmployees.text = @"1";
    lblRatingEmployees.font = [UIFont fontWithName:@"Helvetica-Bold" size:10];
    [lblRatingEmployees sizeToFit];
    [viewRatingCustom addSubview:lblRatingEmployees];
    UIImageView *imageViewStar = [[UIImageView alloc] initWithFrame:CGRectMake(25, 3, 10, 8)];
    imageViewStar.image = [UIImage imageNamed:@"iconBlueStar.png"];
    [viewRatingCustom addSubview:imageViewStar];
    [customMarker addSubview:viewRatingCustom];
    return customMarker;
}

我已经使用这种方法来显示默认情况下为红色的标记的可能数量。

id<GMUClusterAlgorithm> algorithm = [[GMUNonHierarchicalDistanceBasedAlgorithm alloc] init];

id<GMUClusterIconGenerator> iconGenerator = [[GMUDefaultClusterIconGenerator alloc] init];


id<GMUClusterRenderer> renderer =
  [[GMUDefaultClusterRenderer alloc] initWithMapView:_mapView
                                clusterIconGenerator:iconGenerator];

_clusterManager =
  [[GMUClusterManager alloc] initWithMap:_mapView algorithm:algorithm renderer:renderer];

 // Generate and add random items to the cluster manager.

// [self generateClusterItems];


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

    id<GMUClusterItem> item =

    [[POIItem alloc]initWithPosition:CLLocationCoordinate2DMake([[latitudeArray objectAtIndex:i]doubleValue], [[longitudeArray objectAtIndex:i]doubleValue]) name:@"Name"];

    [_clusterManager addItem:item];
}

添加委托(delegate)和集群方法。

 [_clusterManager cluster];
 [_clusterManager setDelegate:self mapDelegate:self];

所以请帮我添加自定义标记来代替默认的红色。

Answer 1

您需要创建符合GMUClusterIconGenerator 协议(protocol)的自定义类:

CustomClusterIconGenerator.h 文件

@interface CustomClusterIconGenerator : NSObject
<GMUClusterIconGenerator>

@end

CustomClusterIconGenerator.m 文件

@implementation CustomClusterIconGenerator

- (UIImage *)iconForSize:(NSUInteger)size {
    // Return custom icon for cluster
    return [UIImage imageNamed:@"Your Custom Cluster Image"];
}

- (UIImage *)iconForMarker {
    // Return custom icon for pin
    return [UIImage imageNamed:@"Your Custom Marker Image"];
}

- (CGPoint)markerIconGroundAnchor {
    // If your marker icon center shifted, return custom value for anchor
    return CGPointMake(0, 0);
}

- (CGPoint)clusterIconGroundAnchor {
    // If your cluster icon center shifted, return custom value for anchor
    return CGPointMake(0, 0);
}

@end

然后然后，而不是

id<GMUClusterIconGenerator> iconGenerator = [[GMUDefaultClusterIconGenerator alloc] init];

使用

CustomClusterIconGenerator *iconGenerator = [[GMUDefaultClusterIconGenerator alloc] init];

这是我项目中的示例: