Question

我刚刚将项目从 arcgis runtime 10.2升级到100.2.1 ，我能够运行AGSFeature图层，但 AGSArcGISMapImageLayer 正在提出问题

我只是加载 AGSArcGISMapImageLayer 图层，其中包含子图层并获取这样的数据

let mapServiceInfo = (dynamicMapServiceLayer as? AGSArcGISMapImageLayer).mapServiceInfo
  if let layerInfos = mapServiceInfo?.layerInfos {
     for layerInfo in layerInfos {
       //get the sublayer data
     }
}

现在我只是根据用户要求显示和隐藏图层

为此我检查了此arcgis链接： - link to show hide the image layer

但是在使用上述程序获得子层数据时，它给出了 me 10个子层数据

但根据我使用方法的链接

dynamicMapServiceLayer.mapImageSublayers.count

然后它只返回两个对象或子图层 因此，我无法实现节目隐藏功能

那么我应该如何在我的案例中使用上述链接方法？或者还有其他方法吗？

Answer 1

通过搜索api，我找到了隐藏或显示dynamicMap图层的解决方案（ AGSArcGISMapImageLayer ）

**layersHidden** is an array which contain the url of layers which I want to hide from map

let mapServiceInfo = dynamicMapServiceLayer?.mapServiceInfo
let layerInfos = mapServiceInfo?.layerInfos

for layerInfo in layerInfos {
     if layerInfo.sublayerIDs.count == 0 {
         // Get the url for the layer.
         let layerUrl = "\(mapServiceInfo?.url?.absoluteString ?? "")/\(UInt(layerInfo.id))"
         // add the name of layers which we want to hide from map in visibleLayers array
         if layersHidden.contains(layerUrl) {
              visibleLayers.append(layerInfo.name)
         }
     }
}

像这样的隐藏图层

for i in 0 ...（（dynamicMapServiceLayer？.mapImageSublayers.count）！ - 1）{ 让layer = dynamicMapServiceLayer？.mapImageSublayers [i]为！ AGSArcGISMapImageSublayer

for subLayer in layer.subLayerContents {
    if visibleLayers.contains(subLayer.name) {
         subLayer.isVisible = false
    }
    else {
      subLayer.isVisible = true
    }
   }
 }

如何显示或隐藏AGSArcGISMapImageLayer子图层

1 个答案: