Display popup with multiple feature layers information

RaymondLi

Hi,

The requirement of the App is when user tap on the location, it will display a popup with all the visible and related feature layer information. How can I do it?

 

// MARK: - AGSGeoViewTouchDelegate
    func geoView(_ geoView: AGSGeoView, didTapAtScreenPoint screenPoint: CGPoint, mapPoint: AGSPoint) {


        
        // Identify graphics at the tapped location.
                mapView.identifyLayers(atScreenPoint: screenPoint,
                                       tolerance: 10,
                                       returnPopupsOnly: false,
                                       maximumResultsPerLayer: 20
                ) { [weak self] (results, error)  in
                    //check for errors and ensure identifyLayerResults is not nil
                    if let error = error {
                        print(error)
                        return
                    }
                    guard let identifyLayerResults = results,
                    let self = self else { return }

                    var resultCount:Int = 0
                    print("identifyLayerResults.count = \(identifyLayerResults.count)")
                    
                    // Loop through all results and get the count for those.
                    for identifyLayerResult in identifyLayerResults {
                        resultCount += self.getIdentifyLayerResultCount(identifyLayerResult)
                    }
                    if resultCount > 0 {
//Want to add code here to display the result in the popups with more than one from feature layers
                    }
                    print("result count = \(resultCount)")
                }
    }

func getIdentifyLayerResultCount(_ identifyLayerResult: AGSIdentifyLayerResult) -> Int {
            var resultCount: Int = 0
            resultCount += identifyLayerResult.geoElements.count
            
            //process the sublayer results for each layer (e.g. for map image layers)
            print("identifyLayerResult.sublayerResults.count = \(identifyLayerResult.sublayerResults.count)")
            // Loop through each subLayerResult recursively and get their count.
            for subLayerResult in identifyLayerResult.sublayerResults {
                resultCount += getIdentifyLayerResultCount(subLayerResult)
            }

            return resultCount
        }

 

 

Ting

First, if you only want to identify features with popup configured, set `returnPopupsOnly` to true.

To get the pre-defined popup on the layer, you'll need to get them from the appropriate `AGSIdentifyLayerResult`. It might be in the main results, or the `sublayerResults`. It depends on the sublayers tree structure. Maybe try the snippet below?

results.flatMap { $0.sublayerResults.flatMap { $0.popups } }

Alternately, when creating your `AGSPopup`, use the initializer which has the `popupDefinition` argument and supply the `popupDefinition` from the layer.