Add features (feature service)

View inQMLC++
View on GitHub
Sample viewer app

Add features to a feature layer.

screenshot

Use case

An end-user performing a survey may want to add features to the map during the course of their work.

How to use the sample

Click on a location on the map to add a feature at that location.

How it works

A Feature is added to a ServiceFeatureTable which then pushes that new feature to the server.

  1. Create a ServiceFeatureTable from a URL.
  2. Create a FeatureLayer from the service feature table.
  3. Create a Feature with attributes and a location using createFeature().
  4. Add the feature to the table.
  5. Update the table on the server using applyEdits().

Relevant API

  • Feature
  • FeatureEditResult
  • FeatureLayer
  • ServiceFeatureTable

Tags

edit, feature, online service

Sample Code

AddFeaturesFeatureService.cppAddFeaturesFeatureService.cppAddFeaturesFeatureService.hAddFeaturesFeatureService.qml
Use dark colors for code blocksCopy
                                                                                                                                         
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
// [WriteFile Name=AddFeaturesFeatureService, Category=EditData]
// [Legal]
// Copyright 2016 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]

#ifdef PCH_BUILD
#include "pch.hpp"
#endif // PCH_BUILD

#include "AddFeaturesFeatureService.h"

#include "Map.h"
#include "MapQuickView.h"
#include "Basemap.h"
#include "Viewpoint.h"
#include "Point.h"
#include "SpatialReference.h"
#include "ServiceFeatureTable.h"
#include "FeatureLayer.h"
#include "Feature.h"
#include "FeatureEditResult.h"
#include <QUrl>
#include <QMap>
#include <QUuid>
#include <QVariant>
#include <QMouseEvent>

using namespace Esri::ArcGISRuntime;

namespace
{
  // Convenience RAII struct that deletes all pointers in given container.
  struct FeatureListResultLock
  {
    FeatureListResultLock(const QList<FeatureEditResult*>& list) : results(list) { }
    ~FeatureListResultLock() { qDeleteAll(results); }
    const QList<FeatureEditResult*>& results;
  };
}

AddFeaturesFeatureService::AddFeaturesFeatureService(QQuickItem* parent) :
  QQuickItem(parent)
{
}

AddFeaturesFeatureService::~AddFeaturesFeatureService() = default;

void AddFeaturesFeatureService::init()
{
  qmlRegisterType<MapQuickView>("Esri.Samples", 1, 0, "MapView");
  qmlRegisterType<AddFeaturesFeatureService>("Esri.Samples", 1, 0, "AddFeaturesFeatureServiceSample");
}

void AddFeaturesFeatureService::componentComplete()
{
  QQuickItem::componentComplete();

  // find QML MapView component
  m_mapView = findChild<MapQuickView*>("mapView");
  m_mapView->setWrapAroundMode(WrapAroundMode::Disabled);

  // create a Map by passing in the Basemap
  m_map = new Map(BasemapStyle::ArcGISStreets, this);
  m_map->setInitialViewpoint(Viewpoint(Point(-10800000, 4500000, SpatialReference(102100)), 3e7));

  // set map on the map view
  m_mapView->setMap(m_map);

  // create the ServiceFeatureTable
  m_featureTable = new ServiceFeatureTable(QUrl("https://sampleserver6.arcgisonline.com/arcgis/rest/services/DamageAssessment/FeatureServer/0"), this);

  // create the FeatureLayer with the ServiceFeatureTable and add it to the Map
  m_featureLayer = new FeatureLayer(m_featureTable, this);
  m_map->operationalLayers()->append(m_featureLayer);

  connectSignals();
}

void AddFeaturesFeatureService::connectSignals()
{
  //! [AddFeaturesFeatureService add at mouse click]
  // connect to the mouse clicked signal on the MapQuickView
  connect(m_mapView, &MapQuickView::mouseClicked, this, [this](QMouseEvent& mouseEvent)
  {
    // obtain the map point
    const double screenX = mouseEvent.x();
    const double screenY = mouseEvent.y();
    Point newPoint = m_mapView->screenToLocation(screenX, screenY);

    // create the feature attributes
    QMap<QString, QVariant> featureAttributes;
    featureAttributes.insert("typdamage", "Minor");
    featureAttributes.insert("primcause", "Earthquake");

    // create a new feature and add it to the feature table
    Feature* feature = m_featureTable->createFeature(featureAttributes, newPoint, this);
    m_featureTable->addFeature(feature);
  });
  //! [AddFeaturesFeatureService add at mouse click]

  // connect to the addFeatureCompleted signal from the ServiceFeatureTable
  connect(m_featureTable, &ServiceFeatureTable::addFeatureCompleted, this, [this](QUuid, bool success)
  {
    // if add feature was successful, call apply edits
    if (success)
      m_featureTable->applyEdits();
  });

  // connect to the applyEditsCompleted signal from the ServiceFeatureTable
  connect(m_featureTable, &ServiceFeatureTable::applyEditsCompleted, this, [](QUuid, const QList<FeatureEditResult*>& featureEditResults)
  {
    // Lock is a convenience wrapper that deletes the contents of the list once we leave scope.
    FeatureListResultLock lock(featureEditResults);

    if (lock.results.isEmpty())
      return;

    // obtain the first item in the list
    FeatureEditResult* featureEditResult = lock.results.first();
    // check if there were errors, and if not, log the new object ID
    if (!featureEditResult->isCompletedWithErrors())
      qDebug() << "New Object ID is:" << featureEditResult->objectId();
    else
      qDebug() << "Apply edits error.";
  });
}

Your browser is no longer supported. Please upgrade your browser for the best experience. See our browser deprecation post for more details.