Open mobile map (map package)

Open a mobile map
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Code

// Copyright 2017 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.

using System.Linq;
using Esri.ArcGISRuntime.Mapping;
using Esri.ArcGISRuntime.UI.Controls;
using Foundation;
using UIKit;
using System.IO;
using ArcGISRuntime.Samples.Managers;

namespace ArcGISRuntime.Samples.OpenMobileMap
{
    [Register("OpenMobileMap")]
	[ArcGISRuntime.Samples.Shared.Attributes.OfflineData("e1f3a7254cb845b09450f54937c16061")]
    [ArcGISRuntime.Samples.Shared.Attributes.Sample(
        "Open mobile map (map package)",
        "Map",
        "This sample demonstrates how to open a mobile map from a map package.",
        "The map package will be downloaded from an ArcGIS Online portal automatically.")]
    public class OpenMobileMap : UIViewController
    {
        // Create and hold reference to the used MapView
        private MapView _myMapView = new MapView();

        public OpenMobileMap()
        {
            Title = "Open mobile map (map package)";
        }

        public override void ViewDidLoad()
        {
            base.ViewDidLoad();
            CreateLayout();
            Initialize();
        }

        public override void ViewDidLayoutSubviews()
        {
            base.ViewDidLayoutSubviews();

            // Update the UI to account for new layout
            _myMapView.Frame = new CoreGraphics.CGRect(0, 0, View.Bounds.Width, View.Bounds.Height);
        }

        private async void Initialize()
        {
            // Get the path to the mobile map package
            string filepath = GetMmpkPath();

            // Open the map package
            MobileMapPackage myMapPackage = await MobileMapPackage.OpenAsync(filepath);

            // Check that there is at least one map
            if (myMapPackage.Maps.Count > 0)
            {
                // Display the first map in the package
                _myMapView.Map = myMapPackage.Maps.First();
            }
        }

        /// <summary>
        /// This abstracts away platform & sample viewer-specific code for accessing local files
        /// </summary>
        /// <returns>String that is the path to the file on disk</returns>
        private string GetMmpkPath()
        {
            return DataManager.GetDataFolder("e1f3a7254cb845b09450f54937c16061", "Yellowstone.mmpk");
        }

        private void CreateLayout()
        {
            // Add MapView to the page
            View.AddSubview(_myMapView);
        }
    }
}


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