Add map image layer

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Display a layer from an ArcGIS map image layer service.

Screenshot of Add map image layer sample

Use case

Map image layers are also referred to as dynamic map services. These services generate images dynamically on the server and send the resulting image to the requesting client. This is useful when rendering complex cartography or large amounts of data in a connected environment, as the client simply displays the image that the server returns. This can result in more accurate and faster-performing layers.

How to use the sample

Open the sample and view the map image layer. As you navigate the map, the layer issues image requests for the new map extent. The resulting images are rendered on the screen.

How it works

Create a Map.
Create an ArcGISMapImageLayer with the URL to a map image service.
Add the layer to the map's operationalLayers.

Relevant API

ArcGISMapImageLayer

Sample Code

AddMapImageLayerView.swift
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// Copyright 2024 Esri
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//   https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import ArcGIS
import SwiftUI

struct AddMapImageLayerView: View {
    /// A map with a map image layer of world elevations.
    @State private var map: Map = {
        // Creates the map image layer using a web URL.
        let url = URL(string: "https://sampleserver5.arcgisonline.com/arcgis/rest/services/Elevation/WorldElevations/MapServer")!
        let mapImageLayer = ArcGISMapImageLayer(url: url)

        // Creates the map and adds the layer to the map's operational layers.
        let map = Map()
        map.addOperationalLayer(mapImageLayer)

        return map
    }()

    var body: some View {
        // Displays the map using a map view.
        MapView(map: map)
    }
}

#Preview {
    AddMapImageLayerView()
}