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// Copyright 2018 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: http://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.using Esri.ArcGISRuntime.Data;
using Esri.ArcGISRuntime.Geometry;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI;
using Microsoft.UI.Xaml;
using System;
namespaceArcGIS.WinUI.Samples.DisplayDrawingStatus{
[ArcGIS.Samples.Shared.Attributes.Sample(
name: "Display draw status",
category: "MapView",
description: "Get the draw status of your map view or scene view to know when all layers in the map or scene have finished drawing.",
instructions: "Pan and zoom around the map. Observe how the status changes from a loading animation to solid, indicating that drawing has completed.",
tags: new[] { "draw", "loading", "map", "render" })]
publicsealedpartialclassDisplayDrawingStatus {
publicDisplayDrawingStatus() {
InitializeComponent();
// Create the UI, setup the control references and execute initialization. Initialize();
}
privatevoidInitialize() {
// Subscribe to be notified of drawing status changes. MyMapView.DrawStatusChanged += OnDrawStatusChanged;
// Create new Map with a topographic basemap. Map myMap = new Map(BasemapStyle.ArcGISTopographic);
// URL pointing to a feature service. Uri serviceUri =
new Uri("https://sampleserver6.arcgisonline.com/arcgis/rest/services/DamageAssessment/FeatureServer/0");
// Initialize a new feature layer. ServiceFeatureTable myFeatureTable = new ServiceFeatureTable(serviceUri);
FeatureLayer myFeatureLayer = new FeatureLayer(myFeatureTable);
// Add the feature layer to the Map. myMap.OperationalLayers.Add(myFeatureLayer);
// Display the map in the view. MyMapView.Map = myMap;
// Zoom to the United States. MyMapView.SetViewpointCenterAsync(new MapPoint(-10800000, 4500000, SpatialReferences.WebMercator), 3e7);
}
privatevoidOnDrawStatusChanged(object sender, DrawStatusChangedEventArgs e) {
// Show the activity indicator if the map is drawing.if (e.Status == DrawStatus.InProgress)
{
ActivityIndicator.Visibility = Visibility.Visible;
StatusDisplay.Text = "Drawing...";
}
else {
ActivityIndicator.Visibility = Visibility.Collapsed;
StatusDisplay.Text = "Finished drawing.";
}
}
}
}