Display KML

Display KML from a URL, portal item, or local KML file.

Use case

Keyhole Markup Language (KML) is a data format used by Google Earth. KML is popular as a transmission format for consumer use and for sharing geographic data between apps. You can use Runtime to display KML files, with full support for a variety of features, including network links, 3D models, screen overlays, and tours.

How to use the sample

Use the UI to select a source. A KML file from that source will be loaded and displayed in the scene.

How it works

1. To create a KML layer from a URL, create a KmlDataset using the URL to the KML file. Then pass the dataset to the KmlLayer constructor.
2. To create a KML layer from a portal item, construct a PortalItem with a Portal and the KML portal item ID. Pass the portal item to the KmlLayer constructor.
3. To create a KML layer from a local file, create a KmlDataset using the absolute file path to the local KML file. Then pass the dataset to the KmlLayer constructor.
4. Add the layer as an operational layer to the scene with scene.OperationalLayers.Add(kmlLayer).

Relevant API

• KmlDataset
• KmlLayer

Offline data

This sample uses US state capitals KML file. It is downloaded from ArcGIS Online automatically.

About the data

This sample displays three different KML files:

• From URL - this is a map of the significant weather outlook produced by NOAA/NWS. It uses KML network links to always show the latest data.
• From local file - this is a map of U.S. state capitals. It doesn't define an icon, so the default pushpin is used for the points.
• From portal item - this is a map of U.S. states.

Tags

keyhole, KML, KMZ, OGC

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<?xml version="1.0" encoding="utf-8" ?>

<ContentPage x:Class="ArcGISRuntimeXamarin.Samples.DisplayKml.DisplayKml"
             xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:esriUI="clr-namespace:Esri.ArcGISRuntime.Xamarin.Forms;assembly=Esri.ArcGISRuntime.Xamarin.Forms">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <Label Grid.Row="0" Text="Choose a KML data source." />
        <Picker x:Name="LayerPicker"
                Grid.Row="1"
                VerticalOptions="CenterAndExpand" />
        <esriUI:SceneView x:Name="MySceneView" Grid.Row="2" />
    </Grid>
</ContentPage>