Many web maps contain predefined popups which are used to display the attributes associated with each feature layer in the map, such as hiking trails, land values, or unemployment rates. You can display text, attachments, images, charts, and web links. Rather than creating new popups to display information, you can easily access and display the predefined popups.
How to use the sample
Tap on the features to prompt a popup that displays information about the feature.
How it works
Create and load a Map using a URL.
Set the map to a MapView and connect to the MapView.mouseClicked signal.
Use GeoView.identifyLayer(layer, x, y, tolerance, allowPopupsOnly, maximumResults) to identify features.
Create a PopupManager for each of the result's Popups and append them to a list.
Assign the list of popup managers to the PopupStackView.popupManagers property.
Display the popup stack view.
Relevant API
IdentifyLayerResult
Map
PopupManager
PopupStackView
About the data
This sample uses a feature layer that displays reported incidents in San Francisco.
Additional information
In order to use the PopupManager with a QML UI, the PopupManager, PopupAttachmentManager, PopupAttachmentListModel, and PopupAttributeListModel classes must be registered as QML Types. For more information visit our developer site.
Tags
feature, feature layer, popup, web map
Sample Code
ShowPopup.qml
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// [WriteFile Name=ShowPopup, Category=DisplayInformation]// [Legal]// Copyright 2020 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.// [Legal]import QtQuick
import QtQuick.Controls
import Esri.ArcGISRuntime
import Esri.ArcGISRuntime.Toolkit
Rectangle {
id: rootRectangleclip: truewidth: 800height: 600property var popupManagers: []
property var featureLayer: nullMapView {
id: mapViewanchors.fill: parentComponent.onCompleted: {
// Set the focus on MapView to initially enable keyboard navigation forceActiveFocus();
}
Map {
initUrl: "https://runtime.maps.arcgis.com/home/webmap/viewer.html?webmap=e4c6eb667e6c43b896691f10cc2f1580" }
// identify layers on mouse clickonMouseClicked: mouse => {
const screenX = mouse.x;
const screenY = mouse.y;
const tolerance = 12;
const returnPopupsOnly = false;
const maximumResults = 10;
featureLayer = mapView.map.operationalLayers.get(0);
mapView.identifyLayerWithMaxResults(featureLayer, screenX, screenY, tolerance, returnPopupsOnly, maximumResults);
}
onIdentifyLayerStatusChanged: {
if (identifyLayerStatus !== Enums.TaskStatusCompleted)
return;
// if layer is a feature layer, select the identify result featuresif (featureLayer.layerType === Enums.LayerTypeFeatureLayer) {
featureLayer.clearSelection();
const geoElements = mapView.identifyLayerResult.geoElements;
for (let i = 0; i < geoElements.length; i++) {
featureLayer.selectFeature(geoElements[i]);
}
}
const popups = mapView.identifyLayerResult.popups;
// clear the list of PopupManagers popupManagers = [];
for (let i = 0; i < popups.length; i++) {
// create a popup managerconst popupManager = ArcGISRuntimeEnvironment.createObject("PopupManager", {popup: popups[i]});
// push popup manager to list popupManagers.push(popupManager);
popupStackView.popupManagers = popupManagers;
}
}
}
PopupStackView {
id: popupStackViewanchors {
top: parent.top
bottom: parent.bottom
right: parent.right
}
visible: falseonPopupManagersChanged: popupStackView.visible = trueonVisibleChanged: {
if (!visible) {
if (featureLayer.layerType === Enums.LayerTypeFeatureLayer)
featureLayer.clearSelection();
}
}
}
BusyIndicator {
id: busyanchors.centerIn: parentvisible: mapView.identifyLayerStatus === Enums.TaskStatusInProgress
}
}