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package com.esri.arcgisruntime.sample.createsymbolstylesfromwebstyles
import android.graphics.Color
import android.os.Bundle
import android.util.Log
import android.view.MotionEvent
import android.view.View
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity
import androidx.coordinatorlayout.widget.CoordinatorLayout
import com.esri.arcgisruntime.ArcGISRuntimeEnvironment
import com.esri.arcgisruntime.data.ServiceFeatureTable
import com.esri.arcgisruntime.layers.FeatureLayer
import com.esri.arcgisruntime.mapping.ArcGISMap
import com.esri.arcgisruntime.mapping.BasemapStyle
import com.esri.arcgisruntime.mapping.Viewpoint
import com.esri.arcgisruntime.mapping.view.DefaultMapViewOnTouchListener
import com.esri.arcgisruntime.symbology.SymbolStyle
import com.esri.arcgisruntime.symbology.UniqueValueRenderer
import kotlinx.android.synthetic.main.activity_main.*
import kotlinx.android.synthetic.main.legend_row.view.*
class MainActivity : AppCompatActivity() {
private val TAG = this::class.java.simpleName
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
// authentication with an API key or named user is required to access basemaps and other
// location services
ArcGISRuntimeEnvironment.setApiKey(BuildConfig.API_KEY)
// create a unique value renderer
val uniqueValueRenderer = UniqueValueRenderer().apply {
// add the name of a field from the feature layer data that symbols will be mapped to
fieldNames.add("cat2")
}
// create a feature layer from a service
val featureLayer =
FeatureLayer(ServiceFeatureTable("http://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/LA_County_Points_of_Interest/FeatureServer/0")).apply {
// set the unique value renderer on the feature layer
renderer = uniqueValueRenderer
}
// create a map with the light gray basemap style
val map = ArcGISMap(BasemapStyle.ARCGIS_LIGHT_GRAY).apply {
// set an initial reference scale on the map for controlling symbol size
referenceScale = 100000.0
// add the feature layer to the map's operational layers
operationalLayers.add(featureLayer)
}
// set up map view properties
mapView.apply {
// set the map
this.map = map
// set a viewpoint
mapView.setViewpoint(Viewpoint(34.28301, -118.44186, 7000.0))
}
// create a symbol style from a web style
// note: ArcGIS Online is used as the default portal when null is passed as the portal parameter
val symbolStyle = SymbolStyle("Esri2DPointSymbolsStyle", null)
// setup the UI for the legend
setupUI()
// create a list of the required symbol names from the web style
val symbolNames = listOf(
"atm",
"beach",
"campground",
"city-hall",
"hospital",
"library",
"park",
"place-of-worship",
"police-station",
"post-office",
"school",
"trail"
)
// create unique values for the renderer and construct a symbol for each feature
symbolNames.forEach { symbolName ->
// create a placeholder legend row
val loadingLegendRow = layoutInflater.inflate(R.layout.legend_row, null).apply {
symbolTextView.text = getString(R.string.loading)
}
// add the placeholder row to the scroll view
scrollViewLayout.addView(loadingLegendRow)
// search for each symbol in the symbol style
val searchResult = symbolStyle.getSymbolAsync(listOf(symbolName))
searchResult.addDoneListener {
try {
// get the symbol from the search result
val symbol = searchResult.get()
// get a list of all categories to be mapped to the symbol
val categories = mapSymbolNameToField(symbolName)
categories.forEach { category ->
// create a unique value for each category
val uniqueValue = UniqueValueRenderer.UniqueValue(
"",
symbolName,
symbol,
listOf(category)
)
// add each unique value to the unique value renderer
uniqueValueRenderer.uniqueValues.add(uniqueValue)
}
// create a swatch from symbol
val symbolBitmapFuture = symbol.createSwatchAsync(this, Color.WHITE)
symbolBitmapFuture.addDoneListener {
// create a legend row
val legendRow = layoutInflater.inflate(R.layout.legend_row, null).apply {
// set the symbol to the row's image view
symbolImageView.setImageBitmap(symbolBitmapFuture.get())
// set the symbol name to the row's text view
symbolTextView.text = symbolName
}
// remove the loading row already at this index
scrollViewLayout.removeViewAt(symbolNames.indexOf(symbolName))
// add the legend row at the correct index
scrollViewLayout.addView(legendRow, symbolNames.indexOf(symbolName))
}
} catch (e: Exception) {
val error = "Error getting symbol: " + e.message
Toast.makeText(this, error, Toast.LENGTH_LONG).show()
Log.e(TAG, error)
}
}
}
// add a map scale changed listener on the map view to control the symbol sizes at different scales
mapView.addMapScaleChangedListener {
featureLayer.isScaleSymbols = mapView.mapScale >= 80000
}
}
/**
* Returns a list of categories to be matched to a symbol name.
*
* @param symbolName the name of a symbol from a symbol style
* @return categories a list of categories matched to the provided symbol name
*/
private fun mapSymbolNameToField(symbolName: String): List<String> {
return mutableListOf<String>().apply {
when (symbolName) {
"atm" -> add("Banking and Finance")
"beach" -> add("Beaches and Marinas")
"campground" -> add("Campgrounds")
"city-hall" -> addAll(
listOf(
"City Halls",
"Government Offices"
)
)
"hospital" -> addAll(
listOf(
"Hospitals and Medical Centers",
"Health Screening and Testing",
"Health Centers",
"Mental Health Centers"
)
)
"library" -> add("Libraries")
"park" -> add("Parks and Gardens")
"place-of-worship" -> add("Churches")
"police-station" -> add("Sheriff and Police Stations")
"post-office" -> addAll(
listOf(
"DHL Locations",
"Federal Express Locations"
)
)
"school" -> addAll(
listOf(
"Public High Schools",
"Public Elementary Schools",
"Private and Charter Schools"
)
)
"trail" -> add("Trails")
}
}
}
/**
* Sets up UI behaviour. Closes expandable floating action button on touching the scene view.
* Moves floating action button on attribution view expanded. Expands floating action button on
* tap.
*/
private fun setupUI() {
mapView.apply {
// create a touch listener
onTouchListener = object : DefaultMapViewOnTouchListener(applicationContext, mapView) {
// close the options sheet when the map is tapped
override fun onTouch(view: View?, motionEvent: MotionEvent?): Boolean {
if (legendFAB.isExpanded) {
legendFAB.isExpanded = false
}
return super.onTouch(view, motionEvent)
}
}
// ensure the floating action button moves to be above the attribution view
addAttributionViewLayoutChangeListener { _, _, _, _, bottom, _, _, _, oldBottom ->
val heightDelta = bottom - oldBottom
(legendFAB.layoutParams as CoordinatorLayout.LayoutParams).bottomMargin += heightDelta
}
}
// show the options sheet when the floating action button is clicked
legendFAB.setOnClickListener {
legendFAB.isExpanded = !legendFAB.isExpanded
}
}
override fun onPause() {
mapView.pause()
super.onPause()
}
override fun onResume() {
super.onResume()
mapView.resume()
}
override fun onDestroy() {
mapView.dispose()
super.onDestroy()
}
}
