Feature collection layer (Portal item)

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/*
 * Copyright 2020 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.featurecollectionlayerportalitem

import android.os.Bundle
import android.util.Log
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment
import com.esri.arcgisruntime.data.FeatureCollection
import com.esri.arcgisruntime.layers.FeatureCollectionLayer
import com.esri.arcgisruntime.loadable.LoadStatus
import com.esri.arcgisruntime.mapping.ArcGISMap
import com.esri.arcgisruntime.mapping.BasemapStyle
import com.esri.arcgisruntime.mapping.view.MapView
import com.esri.arcgisruntime.portal.Portal
import com.esri.arcgisruntime.portal.PortalItem
import com.esri.arcgisruntime.sample.featurecollectionlayerportalitem.databinding.ActivityMainBinding

class MainActivity : AppCompatActivity() {

  private val TAG = MainActivity::class.java.simpleName

  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)

    // authentication with an API key or named user is required to access basemaps and other
    // location services
    ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY)

    // create a portal item from an ArcGIS Online portal and a feature collection item id
    val portal = Portal("https://www.arcgis.com/")
    val collectionItem = PortalItem(portal, "32798dfad17942858d5eef82ee802f0b")

    // if the portal item loaded correctly, create a feature collection layer with the feature collection
    val featureCollection = FeatureCollection(collectionItem)
    val featureCollectionLayer = FeatureCollectionLayer(featureCollection)

    // create a map with the oceans basemap and add it to the map view
    mapView.map = ArcGISMap(BasemapStyle.ARCGIS_OCEANS).apply {
      // add the new feature collection layer to the map
      operationalLayers.add(featureCollectionLayer)
    }

    // check for loading errors using a DoneLoadingListener
    collectionItem.addDoneLoadingListener {
      // abort if the portal item fails to load
      if (collectionItem.loadStatus != LoadStatus.LOADED) {
        val error = "Failed to load portal item: ${collectionItem.loadError.message}"
        Log.e(TAG, error)
        Toast.makeText(this, error, Toast.LENGTH_LONG).show()
        return@addDoneLoadingListener
      }
      // abort if the portal item is not a feature collection, as expected
      if (collectionItem.type != PortalItem.Type.FEATURE_COLLECTION) {
        val error = "Portal item is not a feature collection!"
        Log.e(TAG, error)
        Toast.makeText(this, error, Toast.LENGTH_LONG).show()
        return@addDoneLoadingListener
      }
    }
  }

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

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

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