Draw a polygon

package com.mapbox.maps.testapp.examples.linesandpolygons
 
import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.ContextCompat
import androidx.core.graphics.drawable.toBitmap
import com.mapbox.geojson.Point
import com.mapbox.maps.Style
import com.mapbox.maps.dsl.cameraOptions
import com.mapbox.maps.extension.style.layers.generated.FillLayer
import com.mapbox.maps.extension.style.layers.generated.fillLayer
import com.mapbox.maps.extension.style.layers.generated.lineLayer
import com.mapbox.maps.extension.style.layers.getLayer
import com.mapbox.maps.extension.style.sources.generated.geoJsonSource
import com.mapbox.maps.extension.style.style
import com.mapbox.maps.testapp.R
import com.mapbox.maps.testapp.databinding.ActivityDdsDrawPolygonBinding
 
/**
* Draw a vector polygon on a map with the Mapbox Android SDK.
*/
class DrawPolygonActivity : AppCompatActivity() {
 
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val binding = ActivityDdsDrawPolygonBinding.inflate(layoutInflater)
setContentView(binding.root)
binding.mapView.mapboxMap.setCamera(
START_CAMERA_POSITION
)
binding.mapView.mapboxMap.loadStyle(
style(style = Style.LIGHT) {
+geoJsonSource(SOURCE_ID) {
url(SOURCE_URL)
}
+layerAtPosition(
fillLayer(LAYER_ID, SOURCE_ID) {
fillColor(Color.parseColor("#0080ff")).fillOpacity(0.5)
},
below = SETTLEMENT_LABEL
)
+lineLayer(
TOP_LAYER_ID, SOURCE_ID
) {
lineColor(ContextCompat.getColor(this@DrawPolygonActivity, R.color.black))
lineWidth(3.0)
}
}
)
binding.patternFab.setOnClickListener {
binding.mapView.mapboxMap.getStyle { style ->
val bitmap = ContextCompat.getDrawable(this@DrawPolygonActivity, R.drawable.pattern)
?.toBitmap(128, 128)!!
style.addImage(IMAGE_ID, bitmap)
val layer = style.getLayer(LAYER_ID) as FillLayer
layer.fillPattern(IMAGE_ID)
layer.fillOpacity(0.7)
}
}
}
 
companion object {
private const val IMAGE_ID = "stripe-pattern"
private const val LAYER_ID = "layer-id"
private const val SOURCE_ID = "source-id"
private const val TOP_LAYER_ID = "line-layer"
private const val SETTLEMENT_LABEL = "settlement-major-label"
private const val SOURCE_URL = "asset://maine_polygon.geojson"
private val START_CAMERA_POSITION = cameraOptions {
center(
Point.fromLngLat(-68.137343, 45.137451)
)
zoom(5.0)
bearing(0.0)
pitch(0.0)
}
}
}