Show location history

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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.showlocationhistory

import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.coordinatorlayout.widget.CoordinatorLayout
import com.esri.arcgisruntime.geometry.Point
import com.esri.arcgisruntime.geometry.Polyline
import com.esri.arcgisruntime.geometry.PolylineBuilder
import com.esri.arcgisruntime.geometry.SpatialReference
import com.esri.arcgisruntime.location.SimulatedLocationDataSource
import com.esri.arcgisruntime.location.SimulationParameters
import com.esri.arcgisruntime.mapping.ArcGISMap
import com.esri.arcgisruntime.mapping.Viewpoint
import com.esri.arcgisruntime.mapping.view.Graphic
import com.esri.arcgisruntime.mapping.view.GraphicsOverlay
import com.esri.arcgisruntime.mapping.view.LocationDisplay
import com.esri.arcgisruntime.mapping.view.MapView
import com.esri.arcgisruntime.sample.showlocationhistory.databinding.ActivityMainBinding
import com.esri.arcgisruntime.symbology.SimpleLineSymbol
import com.esri.arcgisruntime.symbology.SimpleMarkerSymbol
import com.esri.arcgisruntime.symbology.SimpleRenderer
import com.google.android.material.floatingactionbutton.FloatingActionButton
import java.util.Calendar

class MainActivity : AppCompatActivity() {

    private var isTrackLocation: Boolean = false

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

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

    private val button: FloatingActionButton by lazy {
        activityMainBinding.button
    }


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

        // create a center point for the data in Redlands, California
        val center = Point(-13185535.98, 4037766.28, SpatialReference.create(102100))

        // create a graphics overlay for the points and use a red circle for the symbols
        val locationHistoryOverlay = GraphicsOverlay()
        val locationSymbol = SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, Color.RED, 10f)
        locationHistoryOverlay.renderer = SimpleRenderer(locationSymbol)

        // create a graphics overlay for the lines connecting the points and use a blue line for the symbol
        val locationHistoryLineOverlay = GraphicsOverlay()
        val locationLineSymbol = SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, Color.GREEN, 2.0f)
        locationHistoryLineOverlay.renderer = SimpleRenderer(locationLineSymbol)

        mapView.apply {
            // set the map to a dark gray canvas basemap
            map =
                ArcGISMap("https://www.arcgis.com/home/item.html?id=1970c1995b8f44749f4b9b6e81b5ba45")
            // set the viewpoint
            setViewpoint(Viewpoint(center, 7000.0))
            // add the graphics overlays to the map view
            graphicsOverlays.addAll(listOf(locationHistoryOverlay, locationHistoryLineOverlay))
        }

        // create a polyline builder to connect the location points
        val polylineBuilder = PolylineBuilder(SpatialReference.create(102100))

        // create a simulated location data source from json data with simulation parameters to set a consistent velocity
        val simulatedLocationDataSource = SimulatedLocationDataSource().apply {
            setLocations(
                Polyline.fromJson(getString(R.string.polyline_data)) as Polyline,
                SimulationParameters(Calendar.getInstance(), 30.0, 0.0, 0.0)
            )
        }

        simulatedLocationDataSource.addLocationChangedListener { locationChangedEvent ->
            // if location tracking is turned off, do not add to the polyline
            if (!isTrackLocation) {
                return@addLocationChangedListener
            }
            // get the point from the location changed event
            val nextPoint = locationChangedEvent.location.position
            // add the new point to the polyline builder
            polylineBuilder.addPoint(nextPoint)
            // add the new point to the two graphics overlays and reset the line connecting the points
            locationHistoryOverlay.graphics.add(Graphic(nextPoint))
            locationHistoryLineOverlay.graphics.apply {
                clear()
                add(Graphic(polylineBuilder.toGeometry()))
            }
        }

        // configure the map view's location display to follow the simulated location data source
        mapView.locationDisplay.apply {
            locationDataSource = simulatedLocationDataSource
            autoPanMode = LocationDisplay.AutoPanMode.RECENTER
            initialZoomScale = 7000.0
        }

        // reset location display and change the isTrackLocation flag and the button's icon
        button.setOnClickListener {
            // if the user has panned away from the location display, turn it on again
            if (mapView.locationDisplay.autoPanMode == LocationDisplay.AutoPanMode.OFF) {
                mapView.locationDisplay.autoPanMode = LocationDisplay.AutoPanMode.RECENTER
            }

            if (isTrackLocation) {
                isTrackLocation = false
                button.setImageResource(R.drawable.ic_my_location_white_24dp)
            } else {
                isTrackLocation = true
                button.setImageResource(R.drawable.ic_navigation_white_24dp)
            }
        }
        // start the simulated location data source
        simulatedLocationDataSource.startAsync()

        // make sure the floating action button doesn't obscure the attribution bar
        mapView.addAttributionViewLayoutChangeListener { _, _, _, _, bottom, _, _, _, oldBottom ->
            val layoutParams = button.layoutParams as CoordinatorLayout.LayoutParams
            layoutParams.bottomMargin += bottom - oldBottom
        }
    }

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

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

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