Change sublayer visibility

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
// 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
import ArcGIS

class SublayerVisibilityViewController: UIViewController {
    @IBOutlet private weak var mapView: AGSMapView!

    private var map: AGSMap!
    private var mapImageLayer: AGSArcGISMapImageLayer!

    override func viewDidLoad() {
        super.viewDidLoad()

        // add the source code button item to the right of navigation bar
        (self.navigationItem.rightBarButtonItem as! SourceCodeBarButtonItem).filenames = ["SublayerVisibilityViewController", "SublayersTableViewController"]

        // initialize map with topographic basemap
        self.map = AGSMap(basemapStyle: .arcGISTopographic)

        // initialize the map image layer using a url
        let mapImageLayer = AGSArcGISMapImageLayer(url: URL(string: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/SampleWorldCities/MapServer")!)

        // add the image layer to the map
        self.map.operationalLayers.add(mapImageLayer)

        // assign the map to the map view
        self.mapView.map = self.map

        // zoom to a custom viewpoint
        self.mapView.setViewpointCenter(AGSPoint(x: -11e6, y: 6e6, spatialReference: .webMercator()), scale: 9e7)

        // store the map image layer for later use
        self.mapImageLayer = mapImageLayer
    }

    // MARK: - Navigation

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "SublayersPopover" {
            // get the destination view controller as BookmarksListViewController
            let controller = segue.destination as! SublayersTableViewController
            if let sublayers = mapImageLayer.mapImageSublayers as? [AGSArcGISMapImageSublayer] {
                controller.sublayers = sublayers
            }
            controller.presentationController?.delegate = self
        }
    }
}

extension SublayerVisibilityViewController: UIAdaptivePresentationControllerDelegate {
    func adaptivePresentationStyle(for controller: UIPresentationController, traitCollection: UITraitCollection) -> UIModalPresentationStyle {
        return .none
    }
}