WMTS layer

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/* 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.
 *
 */

package com.esri.arcgisruntime.sample.wmtslayer

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.esri.arcgisruntime.layers.WmtsLayer
import com.esri.arcgisruntime.loadable.LoadStatus
import com.esri.arcgisruntime.mapping.ArcGISMap
import com.esri.arcgisruntime.mapping.Basemap
import com.esri.arcgisruntime.mapping.view.MapView
import com.esri.arcgisruntime.ogc.wmts.WmtsService
import com.esri.arcgisruntime.sample.wmtslayer.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {

    // objects that implement Loadable must be class fields to prevent being garbage collected before loading
    private val wmtsService: WmtsService by lazy { WmtsService(getString(R.string.wmts_url)) }

    private val activityMainBinding by lazy {
        ActivityMainBinding.inflate(layoutInflater)
    }

    private val mapView: MapView by lazy {
        activityMainBinding.mapView
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(activityMainBinding.root)

        // create a Map
        val map = ArcGISMap()
        // set the map to be displayed in this view
        mapView.map = map
        // display wmts data on the map
        wmtsService.addDoneLoadingListener {
            if (wmtsService.loadStatus == LoadStatus.LOADED) {
                // get service info
                val wmtsServiceInfo = wmtsService.serviceInfo
                // get the first layers id
                val layerInfos = wmtsServiceInfo.layerInfos
                // create WMTS layer from layer info
                val wmtsLayer = WmtsLayer(layerInfos[0])
                // set the basemap of the map with WMTS layer
                map.basemap = Basemap(wmtsLayer)
            }
        }
        wmtsService.loadAsync()
    }

    override fun onPause() {
        super.onPause()
        mapView.pause()
    }

    override fun onResume() {
        super.onResume()
        mapView.resume()
    }

    override fun onDestroy() {
        super.onDestroy()
        mapView.dispose()
    }
}