Question

我正在使用Route-Me：Alpstein fork开发iOS应用程序。原始的Route-Me / Mapbox代码可以选择自定义群集图标以及群集计数。我一直在寻找一种方法来使用Route-Me：Alpstein fork。

类似的东西：

- (RMMapLayer *)mapView:(RMMapView *)mapView layerForAnnotation:(RMAnnotation *)annotation
{
    if (annotation.isUserLocationAnnotation)
        return nil;

    RMMapLayer *layer = nil;

    if (annotation.isClusterAnnotation)
    {
        layer = [[RMMarker alloc] initWithUIImage:[UIImage imageNamed:@"circle.png"]];

        layer.opacity = 0.75;

        layer.bounds = CGRectMake(0, 0, 75, 75);

        [(RMMarker *)layer setTextForegroundColor:[UIColor whiteColor]];

        [(RMMarker *)layer changeLabelUsingText:[NSString stringWithFormat:@"%i", [annotation.clusteredAnnotations count]]];
    }
    else
    {
        layer = [[RMMarker alloc] initWithMapboxMarkerImage];
    }

    return layer;
}

我看不到源中任何地方定义的'isClusterAnnotation'。如何使用Route-Me：Alpstein fork获得相同的结果？任何帮助将不胜感激。

Answer 1

在我的项目中，我在地图委托的mapView:layerForAnnotation:方法中使用了以下内容：

if ([annotation.annotationType isEqualToString:@"RMClusterAnnotation"]) {        
    UIImage *clusterImage = [UIImage imageNamed:@"foo.png"];
    RMMarker *newMarker = [[RMMarker alloc] initWithUIImage:clusterImage];

    // this is how I managed to count the annotations inside a cluster
    NSInteger annotationsInCluster = [((RMQuadTreeNode *)annotation.userInfo).annotations count];

    // you can add a label to the annotation with the number of clustered annotations
    [newMarker changeLabelUsingText: [NSString stringWithFormat:@"%i", annotationsInCluster]];        
    return newMarker;
}

希望这适合你！

Route-Me：Alpstein fork - 自定义群集图标并显示群集计数

1 个答案: