Raster layer (file)

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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.rasterlayerfile

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.layers.RasterLayer
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.raster.Raster
import com.esri.arcgisruntime.sample.rasterlayerfile.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 map with imagery basemap
        val map = ArcGISMap(BasemapStyle.ARCGIS_IMAGERY)
        // add the map to a map view
        mapView.map = map
        // create a raster from a local raster filepath
        val raster = Raster(getExternalFilesDir(null)?.path + getString(R.string.raster_file_path))
        // create a raster layer
        val rasterLayer = RasterLayer(raster)
        // add the raster as an operational layer
        map.operationalLayers.add(rasterLayer)
        // set viewpoint on the raster
        rasterLayer.addDoneLoadingListener {
            if (rasterLayer.loadStatus == LoadStatus.LOADED) {
                mapView.setViewpointGeometryAsync(
                    rasterLayer.fullExtent,
                    50.0
                )
            } else {
                Log.e(TAG, "Error loading raster layer: ${rasterLayer.loadError.message}")
                Toast.makeText(this, "Failed to load raster file from storage", Toast.LENGTH_LONG)
                    .show()
            }
        }
    }

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

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

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