Update attributes (feature service)

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Update feature attributes in an online feature service.

Select a feature to update Callout of selected feature is shown List of damage types Updated attribute

Use case

Online feature services can be updated with new data. This is useful for updating existing data in real time while working in the field.

How to use the sample

To change the feature's damage property, tap the feature to select it, tap the icon in the callout, then choose a new damage type.

How it works

Create and load an AGSServiceGeodatabase with a feature service URL.
Get the AGSServiceFeatureTable from the service geodatabase.
Create an AGSFeatureLayer from the service feature table.
Select features from the AGSFeatureLayer.
Change the selected feature's attributes.
Update the table with AGSFeatureTable.update(_:completion:).
Apply edits to the AGSServiceGeodatabase by calling AGSServiceGeodatabase.applyEdits(completion:), which will update the feature on the online service.

Relevant API

AGSArcGISFeature
AGSFeatureLayer
AGSServiceFeatureTable
AGSServiceGeodatabase

Sample Code

UpdateAttributesOptionsViewController.swift

UpdateAttributesViewController.swift

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// 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.

import UIKit

protocol UpdateAttributesOptionsViewControllerDelegate: AnyObject {
    func optionsViewController(_ optionsViewController: UpdateAttributesOptionsViewController, didSelectOptionAtIndex index: Int)
    func optionsViewControllerDidCancel(_ optionsViewController: UpdateAttributesOptionsViewController)
}

class UpdateAttributesOptionsViewController: UITableViewController {
    var options = [String]()
    weak var delegate: UpdateAttributesOptionsViewControllerDelegate?

    // MARK: - Table view data source

    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return options.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "EAOptionsCell", for: indexPath)

        cell.textLabel?.text = options[indexPath.row]

        return cell
    }

    // MARK: - Table view delegate

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        delegate?.optionsViewController(self, didSelectOptionAtIndex: indexPath.row)
    }

    // MARK: - Actions

    @IBAction func cancel() {
        delegate?.optionsViewControllerDidCancel(self)
    }
}