Ios 向MapKit添加多个圆

继续我以前解决的问题，我面临一个新问题，所以我开始了一个新问题

我试图为数组中的每个CLLocationCoordinates 2D添加圆圈

var routeObsticle:[CLLocationCoordinate2D]=[]

，我有一个计数器

var routeObsticlePosition=0

，在函数中用于在数组的位置上循环以获得一个值。 数组获取附加在函数

checkAlerts（）中的值

以下是控制台消息：

2018-05-15 15:45:01.056042+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056198+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056318+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056429+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056561+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056698+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25434.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056843+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056977+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057120+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057257+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057391+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057531+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25432.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057643+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25433.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057772+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057987+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058244+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25431.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058450+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058685+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058939+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059208+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059478+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059718+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059979+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.060211+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424614+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42214.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424753+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42213.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424899+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42212.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:12.513053+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42214.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)
2018-05-15 15:45:12.513209+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42213.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)
2018-05-15 15:45:12.513319+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42212.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)

可以这样画多个圆圈吗？或者我应该如何完成这项任务？
非常感谢。我从叠加开始，肯定是我误解了什么。
终于找到了问题所在。
我重新实例化了
（renderfor:）
函数，所以我只是合并了
else if
语句来涵盖可能返回的渲染器。事实上，我不明白这样做是可能的。
因此，最终功能更改为：

  func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
    if overlay is MKCircle {
    let renderer = MKCircleRenderer(overlay: overlay)
    renderer.fillColor = UIColor.black.withAlphaComponent(0.1)
    renderer.strokeColor = UIColor.blue
    renderer.lineWidth = 2
    return renderer

    } else if overlay is MKPolyline {
    let renderer = MKPolylineRenderer(overlay: overlay)
    renderer.strokeColor = UIColor.orange
    renderer.lineWidth = 3
    return renderer

    } else if overlay is MKPolygon {
    let renderer = MKPolygonRenderer(polygon: overlay as! MKPolygon)
    renderer.fillColor = UIColor.black.withAlphaComponent(0.5)
    renderer.strokeColor = UIColor.orange
    renderer.lineWidth = 2
    return renderer
    }

    return MKOverlayRenderer()
} 

希望这能对其他人有所帮助

 func mapView(mapView: MKMapView, rendererForOverlay overlay: MKOverlay) -> MKOverlayRenderer{            

    let circleRenderer = MKCircleRenderer(overlay: overlay)
    circleRenderer.strokeColor = UIColor.red
    circleRenderer.lineWidth = 1.0
    return circleRenderer            
}

2018-05-15 15:45:01.056042+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056198+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056318+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056429+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056561+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25436.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056698+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25434.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056843+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.056977+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057120+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057257+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057391+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25435.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057531+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25432.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057643+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25433.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057772+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.057987+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058244+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25431.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058450+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058685+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.058939+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25430.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059208+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10555.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059478+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10554.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059718+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10553.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.059979+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10552.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:01.060211+0200 fix-it mapView[3541:172723] [VKDefault] Tile 10551.25429.16 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424614+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42214.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424753+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42213.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:02.424899+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42212.101729.18 (128) in current unloaded state for 0.00 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (0.00 sec)
2018-05-15 15:45:12.513053+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42214.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)
2018-05-15 15:45:12.513209+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42213.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)
2018-05-15 15:45:12.513319+0200 fix-it mapView[3541:172723] [VKDefault] Tile 42212.101729.18 (128) in current unloaded state for 10.09 seconds - Raster Overlays Above Labels - Failed to decode (terminal) (10.09 sec)

  func mapView(_ mapView: MKMapView, rendererFor overlay: MKOverlay) -> MKOverlayRenderer {
    if overlay is MKCircle {
    let renderer = MKCircleRenderer(overlay: overlay)
    renderer.fillColor = UIColor.black.withAlphaComponent(0.1)
    renderer.strokeColor = UIColor.blue
    renderer.lineWidth = 2
    return renderer

    } else if overlay is MKPolyline {
    let renderer = MKPolylineRenderer(overlay: overlay)
    renderer.strokeColor = UIColor.orange
    renderer.lineWidth = 3
    return renderer

    } else if overlay is MKPolygon {
    let renderer = MKPolygonRenderer(polygon: overlay as! MKPolygon)
    renderer.fillColor = UIColor.black.withAlphaComponent(0.5)
    renderer.strokeColor = UIColor.orange
    renderer.lineWidth = 2
    return renderer
    }

    return MKOverlayRenderer()
}