Draw a polygon with holes

package com.mapbox.maps.testapp.examples.linesandpolygons
 
import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.mapbox.geojson.Feature
import com.mapbox.geojson.LineString
import com.mapbox.geojson.Point
import com.mapbox.geojson.Polygon
import com.mapbox.maps.CameraOptions
import com.mapbox.maps.MapView
import com.mapbox.maps.Style
import com.mapbox.maps.extension.style.layers.addLayer
import com.mapbox.maps.extension.style.layers.addLayerBelow
import com.mapbox.maps.extension.style.layers.generated.FillLayer
import com.mapbox.maps.extension.style.layers.getLayer
import com.mapbox.maps.extension.style.sources.addSource
import com.mapbox.maps.extension.style.sources.generated.geoJsonSource
 
/**
* Add holes to a polygon drawn on top of the map.
*/
class PolygonHolesActivity : AppCompatActivity() {
 
private lateinit var mapView: MapView
 
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
 
mapView = MapView(this)
setContentView(mapView)
with(mapView.mapboxMap) {
// TODO attributionTintColor(RED_COLOR) missing
// TODO compassFadesWhenFacingNorth missing
setCamera(
CameraOptions.Builder()
.center(Point.fromLngLat(55.3089185, 25.255377))
.zoom(13.0)
.build()
)
loadStyle(
Style.STANDARD
) { style ->
val outerLineString: LineString = LineString.fromLngLats(POLYGON_COORDINATES)
val innerLineString: LineString = LineString.fromLngLats(HOLE_COORDINATES[0])
val secondInnerLineString: LineString = LineString.fromLngLats(HOLE_COORDINATES[1])
val innerList: MutableList<LineString> = ArrayList()
innerList.add(innerLineString)
innerList.add(secondInnerLineString)
style.addSource(
geoJsonSource(
"source-id"
) {
feature(Feature.fromGeometry(Polygon.fromOuterInner(outerLineString, innerList)))
}
)
val polygonFillLayer: FillLayer = FillLayer("layer-id", "source-id").apply {
fillColor(BLUE_COLOR)
}
if (style.getLayer("road-number-shield") != null) {
style.addLayerBelow(polygonFillLayer, "road-number-shield")
} else {
style.addLayer(polygonFillLayer)
}
}
}
}
 
override fun onStart() {
super.onStart()
mapView.onStart()
}
 
override fun onStop() {
super.onStop()
mapView.onStop()
}
 
override fun onLowMemory() {
super.onLowMemory()
mapView.onLowMemory()
}
 
override fun onDestroy() {
super.onDestroy()
mapView.onDestroy()
}
 
companion object {
val BLUE_COLOR = Color.parseColor("#3bb2d0")
val POLYGON_COORDINATES = listOf(
Point.fromLngLat(55.30122473231012, 25.26476622289597),
Point.fromLngLat(55.29743486255916, 25.25827212207261),
Point.fromLngLat(55.28978863411328, 25.251356725509737),
Point.fromLngLat(55.300027931336984, 25.246425506635504),
Point.fromLngLat(55.307474692951274, 25.244200378933655),
Point.fromLngLat(55.31212891895635, 25.256408010450187),
Point.fromLngLat(55.30774064871093, 25.26266169122738),
Point.fromLngLat(55.301357710197806, 25.264946609615492),
Point.fromLngLat(55.30122473231012, 25.26476622289597)
)
val HOLE_COORDINATES = listOf(
listOf(
Point.fromLngLat(55.30084858315658, 25.256531695820797),
Point.fromLngLat(55.298280197635705, 25.252243254705405),
Point.fromLngLat(55.30163885563897, 25.250501032248863),
Point.fromLngLat(55.304059065092645, 25.254700192612702),
Point.fromLngLat(55.30084858315658, 25.256531695820797)
),
listOf(
Point.fromLngLat(55.30173763969924, 25.262517391695198),
Point.fromLngLat(55.301095543307355, 25.26122200491396),
Point.fromLngLat(55.30396028103232, 25.259479911263526),
Point.fromLngLat(55.30489872958182, 25.261132667394975),
Point.fromLngLat(55.30173763969924, 25.262517391695198)
)
)
}
}