Loading KMZ file from app not displaying

too_hoppy

I'm attempting to load a KMZ file which has been stored locally in my app. It is not displaying. I'm using the code from GitHub, specifically KmlViewer and that works fine when I click on its local file.  I'm running on an iOS Simulator. The code finds the file in the filesystem fine. Code below. Any suggestions on if I'm missing something. I switched to KmlDataset (which works on KlmViewer) but that didn't seem to fix the issue.

using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.Ogc;
using Esri.ArcGISRuntime.Xamarin.Forms;

using System;

using txparks.Data.ViewModel;
using txparks.DS;
using txparks.Utility;

using Xamarin.Forms;

namespace txparks.Views.Downloads
{
public partial class DisplayKml : ContentPage
{
private string TAG { get => this.GetType().Name; }
private readonly Envelope _usEnvelope = new Envelope(-144.619561355187, 18.0328662832097, -66.0903762761083, 67.6390975806745, SpatialReferences.Wgs84);

DisplayKmlVM viewModel;

public DisplayKml()
{
InitializeComponent();
Initialize();
}

protected override void OnAppearing()
{
base.OnAppearing();
//Test2();
Setup();
}

void Initialize()
{
Logger.Debug(TAG, GeneralUtil.GetCallerName());
MySceneView.Scene = new Scene(Basemap.CreateImageryWithLabels());
}

protected override void OnBindingContextChanged()
{
Logger.Debug(TAG, GeneralUtil.GetCallerName());
base.OnBindingContextChanged();
viewModel = (DisplayKmlVM)base.BindingContext;
}

async void Test1()
{
KmlLayer layer = new KmlLayer(new Uri("https://www.wpc.ncep.noaa.gov/kml/noaa_chart/WPC_Day1_SigWx.kml"));
MySceneView.Scene.OperationalLayers.Add(layer);
await MySceneView.SetViewpointAsync(new Viewpoint(viewModel.Envelope));

}

async void Test2()
{
KmlLayer layer = new KmlLayer(new Uri("https://tpwd.texas.gov/spdest/parkinfo/maps/gis/kmz/abilene_sp_trails.kmz"));
//Logger.DebugMedium(TAG, "layer load status: {0}", layer.LoadStatus);
MySceneView.Scene.OperationalLayers.Add(layer);
await MySceneView.SetViewpointAsync(new Viewpoint(viewModel.Envelope));
}

void Refresh(object sender, EventArgs e)
{
Logger.Info(TAG, GeneralUtil.GetCallerName());
Setup();
}

async void Setup()
{
Logger.Info(TAG, GeneralUtil.GetCallerName());

var filePath = viewModel.Uri;
var isExists = DependencyService.Get<IFileService>().FileExists(filePath);
Logger.DebugLow(TAG, "uri exists: {0} | {1}", isExists, filePath);

try
{
MySceneView.Scene.OperationalLayers.Clear();

KmlDataset dataset = new KmlDataset(new Uri(filePath));
Logger.DebugLow(TAG, "dataset status: {0}", dataset.LoadStatus);
Logger.DebugLow(TAG, "dataset error: {0}", dataset.LoadError);
Logger.DebugLow(TAG, "dataset source: {0}", dataset.Source);

KmlLayer layer = new KmlLayer(dataset);

//KmlLayer layer = new KmlLayer(new Uri(filePath));
MySceneView.Scene.OperationalLayers.Add(layer);

await MySceneView.SetViewpointAsync(new Viewpoint(viewModel.Envelope));
}
catch (Exception ex)
{
Logger.Error(TAG, "Setup error: {0}", ex);
}
}

}
}

 

MichaelBranscomb

You could try awaiting the async load on the KmlDataset or KmlLayer (depending on the approach you're taking) and check the load status, noting that load may return an exception is there's an error. Also try the SceneView LayerViewStateChanged event to identify layer-related drawing activity (in/out of scale, errors, etc).

• https://developers.arcgis.com/net/wpf/api-reference/html/M_Esri_ArcGISRuntime_Mapping_Layer_LoadAsync.htm
• https://developers.arcgis.com/net/wpf/api-reference/html/E_Esri_ArcGISRuntime_UI_Controls_GeoView_LayerViewStateChanged.htm