Add readme and source code.

Author: fcamas

Samples.xcodeproj/project.pbxproj

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Shared/Samples/Add web tiled layer/AddWebTiledLayerView.swift

@@ -12,11 +12,59 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+import ArcGIS
 import SwiftUI
 
 struct AddWebTiledLayerView: View {
+    /// The view model for the sample.
+    @StateObject private var model = Model()
+    
     var body: some View {
-        Text(/*@START_MENU_TOKEN@*/"Hello, World!"/*@END_MENU_TOKEN@*/)
+        VStack {
+            MapView(map: model.map)
+        }
+    }
+}
+
+private extension AddWebTiledLayerView {
+    // MARK: - Model
+    
+    /// The view model for the sample.
+    final class Model: ObservableObject {
+        @Published var map: Map
+        
+        init() {
+            self.map = Model.createMap()
+        }
+        
+        /// A map with a web tiled layer as basemap.
+        static func createMap() -> Map {
+            let webTiledLayer = webTiledLayer()
+            let basemap = Basemap(baseLayer: webTiledLayer)
+            let map = Map(basemap: basemap)
+            return map
+        }
+        
+        static func webTiledLayer() -> WebTiledLayer {
+            let  worldTileServiceURL = "https://server.arcgisonline.com/arcgis/rest/services/Ocean/World_Ocean_Base/MapServer/tile/{level}/{row}/{col}.jpg"
+            
+            let attribution = """
+                Map tiles by <a href="https://livingatlas.arcgis.com">ArcGIS Living Atlas of the World</a>, under <a href="https://www.esri.com/en-us/legal/terms/full-master-agreement">Esri Master License Agreement</a>. Data by Esri, Garmin, GEBCO, NOAA NGDC, and other contributors.
+                """
+            
+            // Build the web tiled layer from ArcGIS Living Atlas of the World tile service url.
+            let webTiledLayer = WebTiledLayer(urlTemplate: worldTileServiceURL)
+            // Set the attribution on the layer.
+            webTiledLayer.setAttribution(attribution)
+            
+            return webTiledLayer
+        }
+    }
+}
+
+struct AddWebTiledLayerView_Previews: PreviewProvider {
+    static var previews: some View {
+        AddWebTiledLayerView()
     }
 }