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()
  }
}