Find route in transport network

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 /* Copyright 2023 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.arcgismaps.sample.findrouteintransportnetwork  import android.graphics.drawable.BitmapDrawable import android.os.Bundle import android.util.Log import com.esri.arcgismaps.sample.sampleslib.EdgeToEdgeCompatActivity import androidx.core.content.ContextCompat import androidx.databinding.DataBindingUtil import androidx.lifecycle.lifecycleScope import com.arcgismaps.ApiKey import com.arcgismaps.ArcGISEnvironment import com.arcgismaps.Color import com.arcgismaps.geometry.Envelope import com.arcgismaps.geometry.Geometry import com.arcgismaps.geometry.GeometryEngine import com.arcgismaps.geometry.Point import com.arcgismaps.geometry.SpatialReference import com.arcgismaps.mapping.ArcGISMap import com.arcgismaps.mapping.Basemap import com.arcgismaps.mapping.layers.ArcGISTiledLayer import com.arcgismaps.mapping.layers.TileCache import com.arcgismaps.mapping.symbology.CompositeSymbol import com.arcgismaps.mapping.symbology.HorizontalAlignment import com.arcgismaps.mapping.symbology.PictureMarkerSymbol import com.arcgismaps.mapping.symbology.SimpleLineSymbol import com.arcgismaps.mapping.symbology.SimpleLineSymbolStyle import com.arcgismaps.mapping.symbology.TextSymbol import com.arcgismaps.mapping.symbology.VerticalAlignment import com.arcgismaps.mapping.view.Graphic import com.arcgismaps.mapping.view.GraphicsOverlay import com.arcgismaps.mapping.view.ScreenCoordinate import com.arcgismaps.tasks.networkanalysis.RouteParameters import com.arcgismaps.tasks.networkanalysis.RouteTask import com.arcgismaps.tasks.networkanalysis.Stop import com.esri.arcgismaps.sample.findrouteintransportnetwork.databinding.FindRouteInTransportNetworkActivityMainBinding import com.google.android.material.snackbar.Snackbar import kotlinx.coroutines.launch import java.io.File import kotlin.math.roundToInt  class MainActivity : EdgeToEdgeCompatActivity() {   // set up data binding for the activity  private val activityMainBinding: FindRouteInTransportNetworkActivityMainBinding by lazy {  DataBindingUtil.setContentView(this, R.layout.find_route_in_transport_network_activity_main)  }   private val provisionPath: String by lazy {  getExternalFilesDir(null)?.path.toString() + File.separator + getString(R.string.find_route_in_transport_network_app_name)  }   private val mapView by lazy {  activityMainBinding.mapView  }   private val toggleButtons by lazy {  activityMainBinding.toggleButtons  }   private val clearButton by lazy {  activityMainBinding.clearButton  }   private val distanceTimeTextView by lazy {  activityMainBinding.distanceTimeTextView  }   private val stopsOverlay: GraphicsOverlay by lazy { GraphicsOverlay() }  private val routeOverlay: GraphicsOverlay by lazy { GraphicsOverlay() }   private val envelope = Envelope(  Point(-1.3045e7, 3.87e6, 0.0, SpatialReference.webMercator()),  Point(-1.3025e7, 3.84e6, 0.0, SpatialReference.webMercator())  )   // create a route task to calculate routes  private var routeTask: RouteTask? = null   private var routeParameters: RouteParameters? = null   override fun onCreate(savedInstanceState: Bundle?) {  super.onCreate(savedInstanceState)   // authentication with an API key or named user is  // required to access basemaps and other location services  ArcGISEnvironment.apiKey = ApiKey.create(BuildConfig.ACCESS_TOKEN)  // some parts of the API require an Android Context to properly interact with Android system  // features, such as LocationProvider and application resources  ArcGISEnvironment.applicationContext = applicationContext  lifecycle.addObserver(mapView)   // create a tile cache from the .tpkx file  val tileCache = TileCache(provisionPath + getString(R.string.tpkx_path))  val tiledLayer = ArcGISTiledLayer(tileCache)  // make a basemap with the tiled layer and add it to the mapview as an ArcGISMap  mapView.map = ArcGISMap(Basemap(tiledLayer))   // add the graphics overlays to the map view  mapView.graphicsOverlays.addAll(listOf(routeOverlay, stopsOverlay))   // create a route task using the geodatabase file  val geodatabaseFile = File(provisionPath + getString(R.string.geodatabase_path))  routeTask = RouteTask(geodatabaseFile.path, "Streets_ND")   // load the route task  lifecycleScope.launch {  routeTask?.load()?.onFailure {  showError(it.message.toString())  }?.onSuccess {  // use the default parameters for the route calculation  routeParameters = routeTask?.createDefaultParameters()?.getOrThrow()  }  }   toggleButtons.addOnButtonCheckedListener { _, checkedId, isChecked ->  if (isChecked) {  when (checkedId) {  R.id.fastestButton -> {  // calculate fastest route  routeParameters?.travelMode =  routeTask?.getRouteTaskInfo()?.travelModes?.get(0)   // update route based on selection  updateRoute()  }  R.id.shortestButton -> {  // calculate shortest route  routeParameters?.travelMode =  routeTask?.getRouteTaskInfo()?.travelModes?.get(1)   // update route based on selection  updateRoute()  }  }  }  }   // make a clear button to reset the stops and routes  clearButton.setOnClickListener {  stopsOverlay.graphics.clear()  routeOverlay.graphics.clear()  clearButton.isEnabled = false  distanceTimeTextView.text = getString(R.string.tap_on_map_to_create_a_transport_network)  }   // set up the touch listeners on the map view  setUpMapView()  }   /**  * Sets up the viewpoint and onSingleTapConfirmed for the mapView.  * For single taps, graphics will be selected.  * */  private fun setUpMapView() {  with(lifecycleScope) {  // set the viewpoint of the MapView  launch {  mapView.setViewpointGeometry(envelope)  }   // add graphic at the tapped coordinate  launch {  mapView.onSingleTapConfirmed.collect { tapEvent ->  val screenCoordinate = tapEvent.screenCoordinate  addOrSelectGraphic(screenCoordinate)  clearButton.isEnabled = true  }  }  }  }   /**  * Updates the calculated route using the  * stops on the map by calling routeTask.solveRoute().  * Creates a graphic to display the route.  * */  private fun updateRoute() = lifecycleScope.launch {  // get a list of stops from the graphics currently on the graphics overlay.  val stops = stopsOverlay.graphics.map {  Stop(it.geometry as Point)  }   // do not calculate a route if there is only one stop  if (stops.size <= 1) return@launch   routeParameters?.setStops(stops)   // solve the route  val results = routeParameters?.let { routeTask?.solveRoute(it) }  results?.onFailure {  showError("No route solution. ${it.message}")  routeOverlay.graphics.clear()  }?.onSuccess { routeResult ->  // get the first solved route result  val route = routeResult.routes[0]   // create graphic for route  val graphic = Graphic(  route.routeGeometry, SimpleLineSymbol(  SimpleLineSymbolStyle.Solid,  Color.black, 3F  )  )  routeOverlay.graphics.clear()  routeOverlay.graphics.add(graphic)   // set distance-time text  val travelTime = route.travelTime.roundToInt()  val travelDistance = "%.2f".format(  route.totalLength * 0.000621371192 // convert meters to miles and round 2 decimals  )  distanceTimeTextView.text = String.format("$travelTime min ($travelDistance mi)")  }  }   /**  * Selects a graphic if there is one at the  * provided [screenCoordinate] or, if there is  * none, creates a new graphic.  * */  private suspend fun addOrSelectGraphic(screenCoordinate: ScreenCoordinate) {  // identify the selected graphic  val result =  mapView.identifyGraphicsOverlay(stopsOverlay, screenCoordinate, 10.0, false)   result.onFailure {  showError(it.message.toString())  }.onSuccess { identifyGraphicsOverlayResult ->  val graphics = identifyGraphicsOverlayResult.graphics   // unselect everything  if (stopsOverlay.selectedGraphics.isNotEmpty()) {  stopsOverlay.unselectGraphics(stopsOverlay.selectedGraphics)  }   // if the user tapped on something, select it  if (graphics.isNotEmpty()) {  val firstGraphic = graphics[0]  firstGraphic.isSelected = true  } else { // there is no graphic at this location  val locationPoint = mapView.screenToLocation(screenCoordinate)  // check if tapped location is within the envelope  if (GeometryEngine.within(locationPoint as Geometry, envelope))  // make a new graphic at the tapped location  createStopSymbol(stopsOverlay.graphics.size + 1, locationPoint)  else  showError("Tapped location is outside the transport network")  }  }  }   /**  * Creates a composite symbol to represent a numbered stop.  * The [stopNumber] is the ordinal number of this stop and the  * symbol will be placed at the [locationPoint].  */  private fun createStopSymbol(stopNumber: Int, locationPoint: Point?) {  // create a orange pin PictureMarkerSymbol  val pinSymbol = PictureMarkerSymbol.createWithImage(  ContextCompat.getDrawable(  this,  R.drawable.pin_symbol  ) as BitmapDrawable  ).apply {  // set the scale of the symbol  width = 24f  height = 24f  // set in pin "drop" to be offset to the point on map  offsetY = 10f  }   // create black stop number TextSymbol  val stopNumberSymbol = TextSymbol(  stopNumber.toString(),  Color.black,  12f,  HorizontalAlignment.Center,  VerticalAlignment.Bottom  ).apply {  offsetY = 4f  }   // create a composite symbol and add the picture marker symbol and text symbol  val compositeSymbol = CompositeSymbol()  compositeSymbol.symbols.addAll(listOf(pinSymbol, stopNumberSymbol))   // create a graphic to add to the overlay and update the route  val graphic = Graphic(locationPoint, compositeSymbol)  stopsOverlay.graphics.add(graphic)   updateRoute()  }   private fun showError(message: String) {  Log.e(localClassName, message)  Snackbar.make(mapView, message, Snackbar.LENGTH_SHORT).show()  } }