A mobile geodatabase is a collection of various types of GIS datasets contained in a single file (.geodatabase) on disk that can store, query, and manage spatial and non-spatial data. Mobile geodatabases are stored in a SQLite database and can contain up to 2 TB of portable data. Users can create, edit and share mobile geodatabases across ArcGIS Pro, ArcGIS Maps SDKs for Native Apps, or any SQL software. These mobile geodatabases support both viewing and editing and enable new offline editing workflows without requiring a feature service.
For example, a user would like to track the location of their device at various intervals to generate a heat map of the most visited locations. The user can add each location as a feature to a table and generate a mobile geodatabase. The user can then instantly share the mobile geodatabase to ArcGIS Pro to generate a heat map using the recorded locations stored as a geodatabase feature table.
How to use the sample
Click "Create Geodatabase" to create the geodatabase and its feature table. Click on the map to add new features to the geodatabase. Click "View Table" to view the contents of the geodatabase feature table. Once you have added the features to the map, click on "Close Geodatabase" to save the .geodatabase file which can then be imported into ArcGIS Pro or opened with ArcGIS Maps SDKs for Native Apps.
How it works
Create an empty mobile geodatabase with Geodatabase.createAsync(String path) and pass in a specific path as the parameter.
Create a new TableDescription and add a list of new FieldDescriptions to its collection of field descriptions with tableDescription.getFieldDescriptions().addAll().
Create a new table in the geodatabase from the table description with geodatabase.createTableAsync(). Once the listenable future has completed, get the newly created geodatabase feature table with geodatabaseFeatureTableFuture.get().
Create a feature on the selected map point using geodatabaseFeatureTable.createFeature(), passing a map of feature attributes and a geometry as parameters.
Add the feature to the table using geodatabaseFeatureTable.addFeatureAsync(feature).
Each feature added to the geodatabase feature table is committed to the mobile geodatabase file.
Close the mobile geodatabase with geodatabase.close().
Relevant API
ArcGISFeature
FeatureLayer
FieldDescription
Geodatabase
GeodatabaseFeatureTable
TableDescription
Additional information
Learn more about mobile geodatabases and how to utilize them on the ArcGIS Pro documentation page. The following mobile geodatabase behaviors are supported in the ArcGIS Maps SDKs for Native Apps: annotation, attachments, attribute rules, contingent values, dimensions, domains, feature-linked annotation, subtypes, utility network and relationship classes.
Learn more about the types of fields supported with mobile geodatabases on the ArcGIS Pro documentation page.
Tags
arcgis pro, database, feature, feature table, geodatabase, mobile geodatabase, sqlite
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/*
* Copyright 2022 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.
*/package com.esri.samples.create_mobile_geodatabase;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.ExecutionException;
import javafx.fxml.FXML;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.geometry.Point2D;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.Region;
import javafx.scene.layout.StackPane;
import javafx.scene.paint.Color;
import javafx.stage.Stage;
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment;
import com.esri.arcgisruntime.mapping.ArcGISMap;
import com.esri.arcgisruntime.mapping.BasemapStyle;
import com.esri.arcgisruntime.mapping.view.MapView;
import com.esri.arcgisruntime.data.Field;
import com.esri.arcgisruntime.data.FieldDescription;
import com.esri.arcgisruntime.data.Geodatabase;
import com.esri.arcgisruntime.data.GeodatabaseFeatureTable;
import com.esri.arcgisruntime.data.TableDescription;
import com.esri.arcgisruntime.geometry.GeometryEngine;
import com.esri.arcgisruntime.geometry.GeometryType;
import com.esri.arcgisruntime.geometry.Multipoint;
import com.esri.arcgisruntime.geometry.Point;
import com.esri.arcgisruntime.geometry.PointCollection;
import com.esri.arcgisruntime.geometry.SpatialReferences;
import com.esri.arcgisruntime.layers.FeatureLayer;
import com.esri.arcgisruntime.mapping.view.Graphic;
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay;
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol;
import com.esri.arcgisruntime.data.QueryParameters;
publicclassCreateMobileGeodatabaseController{
@FXMLprivate MapView mapView;
@FXMLprivate Label label;
@FXMLprivate Button viewTableButton;
@FXMLprivate Button createGeodatabaseButton;
@FXMLprivate Button closeGeodatabaseButton;
@FXMLprivate Stage tableStage;
private ArcGISMap map;
private GraphicsOverlay graphicsOverlay;
private Geodatabase geodatabase;
private Path geodatabasePath;
private GeodatabaseFeatureTable geodatabaseFeatureTable;
private List<Point> inputs;
privateboolean isTableWindowOpen;
@FXMLprivatevoidinitialize(){
try {
// authentication with an API key or named user is required to access base maps and other location services String yourAPIKey = System.getProperty("apiKey");
ArcGISRuntimeEnvironment.setApiKey(yourAPIKey);
// create a map with the topographic imagery basemap style map = new ArcGISMap(BasemapStyle.ARCGIS_TOPOGRAPHIC);
// set the map to the mapview mapView.setMap(map);
// create a point located at Harper's Ferry, West Virginia to be used as the viewpoint for the mapvar point = new Point(-77.7332, 39.3238, SpatialReferences.getWgs84());
mapView.setViewpointCenterAsync(point, 15000);
// create a graphics overlay to display the input points graphicsOverlay = new GraphicsOverlay();
mapView.getGraphicsOverlays().add(graphicsOverlay);
// create a graphic to add the simple marker symbol in the graphics overlayvar simpleMarkerSymbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, Color.BLACK, 10);
var graphic = new Graphic();
graphic.setSymbol(simpleMarkerSymbol);
graphicsOverlay.getGraphics().add(graphic);
// keep track of the points added by the user inputs = new ArrayList<>();
// create a point from user input and add it to the geodatabase feature table mapView.setOnMouseClicked(e -> {
if (createGeodatabaseButton.isDisabled()) {
if (e.isStillSincePress() && e.getButton() == MouseButton.PRIMARY) {
// create 2D point from pointer locationvar point2D = new Point2D(e.getX(), e.getY());
// create a map point from 2D point Point mapPoint = mapView.screenToLocation(point2D);
// the map point should be normalized to the central meridian when wrapping around a map, so its value// stays within the coordinate system of the map view Point normalizedMapPoint = (Point) GeometryEngine.normalizeCentralMeridian(mapPoint);
// add a point where the user clicks on the map and update the inputs graphic geometry inputs.add(normalizedMapPoint);
Multipoint inputsGeometry = new Multipoint(new PointCollection(inputs));
graphic.setGeometry(inputsGeometry);
if (!inputs.isEmpty()) {
// close and refresh table display handleTableWindowVisibility();
// set up the feature attributes Map<String, Object> featureAttributes = new HashMap<>(Map.of("collection_timestamp", Calendar.getInstance().getTime().toString()));
// create a new feature at the map pointvar feature = geodatabaseFeatureTable.createFeature(featureAttributes, normalizedMapPoint);
// add the feature to the feature tablevar addFeatureFuture = geodatabaseFeatureTable.addFeatureAsync(feature);
addFeatureFuture.addDoneListener(() -> {
try {
addFeatureFuture.get();
// update the total feature count on screen if feature was added successfully label.setText("Number of features added: " + geodatabaseFeatureTable.getTotalFeatureCount());
} catch (InterruptedException | ExecutionException ex) {
new Alert(Alert.AlertType.ERROR, "Unable to add feature.").show();
ex.printStackTrace();
}
});
}
}
}
});
} catch (Exception ex) {
// on any error, display the stack trace. ex.printStackTrace();
}
}
/**
* Creates geodatabase and feature layer from geodatabase feature table descriptions.
*/@FXMLprivatevoidhandleCreateGeodatabase(){
// get the path for the geodatabase file geodatabasePath = Paths.get(System.getProperty("user.dir") + "/LocationHistory.geodatabase");
try {
// delete geodatabase from previous run Files.deleteIfExists(geodatabasePath);
} catch (IOException ioException) {
new Alert(Alert.AlertType.ERROR, "Unable to delete previous geodatabase file").show();
ioException.printStackTrace();
}
// create geodatabase from the specified geodatabase file pathvar geodatabaseFuture = Geodatabase.createAsync(geodatabasePath.toString());
geodatabaseFuture.addDoneListener(() -> {
try {
// get the instance of the mobile geodatabase geodatabase = geodatabaseFuture.get();
// create a table description to store features as map points and set non-required properties to falsevar tableDescription = new TableDescription("LocationHistory", SpatialReferences.getWgs84(),
GeometryType.POINT);
// set up the fields for the table. FieldType.OID is the primary key of the SQLite tablevar fieldDescriptionOID = new FieldDescription("oid", Field.Type.OID);
var fieldDescriptionText = new FieldDescription("collection_timestamp", Field.Type.TEXT);
tableDescription.getFieldDescriptions().addAll(List.of(fieldDescriptionOID, fieldDescriptionText));
// add a new table to the geodatabase feature table by creating one from the table descriptionvar geodatabaseFeatureTableFuture = geodatabase.createTableAsync(tableDescription);
// set up the map view to display the feature layer using the loaded tableFuture geodatabase feature table geodatabaseFeatureTableFuture.addDoneListener(() -> {
try {
// get the result of the loaded "LocationHistory" table geodatabaseFeatureTable = geodatabaseFeatureTableFuture.get();
// create a feature layer for the map using the GeodatabaseFeatureTablevar featureLayer = new FeatureLayer(geodatabaseFeatureTable);
map.getOperationalLayers().add(featureLayer);
createGeodatabaseButton.setDisable(true);
closeGeodatabaseButton.setDisable(false);
viewTableButton.setDisable(false);
mapView.setDisable(false);
label.setText("Click map to add features");
} catch (Exception ex) {
new Alert(Alert.AlertType.ERROR, "Failed to get feature table result").show();
ex.printStackTrace();
}
});
} catch (Exception ex) {
new Alert(Alert.AlertType.ERROR, "Failed to get geodatabase result").show();
ex.printStackTrace(); }
});
}
/**
* Closes the geodatabase, displays its directory, and updates UI components.
*/@FXMLprivatevoidhandleCloseGeodatabase(){
// close geodatabase, table, and clear input list geodatabase.close();
inputs.clear();
if (tableStage != null) {
tableStage.close();
}
// display geodatabase file location Alert dialog = new Alert(Alert.AlertType.INFORMATION,
"Mobile geodatabase has been closed and saved in the following directory: " + geodatabasePath.toString());
dialog.initOwner(mapView.getScene().getWindow());
dialog.setHeaderText(null);
dialog.setTitle(("Information"));
dialog.setResizable(true);
dialog.getDialogPane().setMinHeight(Region.USE_PREF_SIZE);
dialog.showAndWait();
// handle UI viewTableButton.setDisable(true);
closeGeodatabaseButton.setDisable(true);
createGeodatabaseButton.setDisable(false);
label.setText("Click button to start.");
graphicsOverlay.getGraphics().clear();
map.getOperationalLayers().clear();
}
/**
* Displays a new window with the table of features stored in the geodatabase feature table.
*/@FXMLprivatevoidhandleDisplayTable(){
// close previous table handleTableWindowVisibility();
// create observable list of type GeoFeature to store the geodatabase featuresfinal ObservableList<FeatureAttributeField> fieldData = FXCollections.observableArrayList();
// query all the features loaded to the tablevar queryResultFuture = geodatabaseFeatureTable.queryFeaturesAsync(new QueryParameters());
queryResultFuture.addDoneListener(() -> {
try {
var queryResults = queryResultFuture.get();
queryResults.forEach(feature ->
// add features to the observable list fieldData.add(
new FeatureAttributeField(feature.getAttributes().get("oid").toString(),
feature.getAttributes().get("collection_timestamp").toString())));
// create and set up a new table view to display the features in a table TableView<FeatureAttributeField> table = new TableView<>();
// create two table columns and add them to the table view TableColumn<FeatureAttributeField, String> oidCol = new TableColumn<>("OID");
TableColumn<FeatureAttributeField, String> timeCol = new TableColumn<>("COLLECTION TIMESTAMP");
table.getColumns().add(oidCol);
table.getColumns().add(timeCol);
// associate data to the table columns referencing the fields in the GeoFeature class oidCol.setCellValueFactory(new PropertyValueFactory<>("oid"));
timeCol.setCellValueFactory(new PropertyValueFactory<>("timestamp"));
// add data to the table view table.setItems(fieldData);
// create a StackPane, Scene, and Stage for displaying the table view in a new windowvar pane = new StackPane();
pane.getChildren().add(table);
var scene = new Scene(pane, 220, 230);
// set up stage properties before display tableStage = new Stage();
tableStage.setTitle("Features");
tableStage.centerOnScreen();
tableStage.setScene(scene);
tableStage.show();
} catch (InterruptedException | ExecutionException ex) {
new Alert(Alert.AlertType.ERROR, "Failed to query the feature table").show();
ex.printStackTrace();
}
});
}
/**
* Handles visibility of the table window and closes table window before adding new features.
*/privatevoidhandleTableWindowVisibility(){
if (tableStage != null) {
if (tableStage.isShowing()) {
isTableWindowOpen = true;
}
elseif (!tableStage.isShowing()) {
isTableWindowOpen = false;
}
}
if (tableStage != null && isTableWindowOpen) {
tableStage.close();
isTableWindowOpen = false;
}
}
/**
* Closes the geodatabase and disposes of application resources.
*/voidterminate(){
if (geodatabase != null) {
geodatabase.close();
}
if (mapView != null) {
mapView.dispose();
}
}
}