Raw GeoJSON | Maps SDK | Android Docs

Use a GeoJSON string as data for a GeoJSON source through Value API.
Kotlin
RawGeoJsonActivity.kt
package com.mapbox.maps.testapp.examples

import android.graphics.Color
import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.mapbox.bindgen.Value
import com.mapbox.geojson.Point
import com.mapbox.maps.CameraOptions
import com.mapbox.maps.MapView
import com.mapbox.maps.MapboxMap
import com.mapbox.maps.Style
import com.mapbox.maps.extension.style.layers.addLayer
import com.mapbox.maps.extension.style.layers.generated.circleLayer

/**
 * Example showcasing raw geojson conversion support through the Value API.
 * This converts the following geojson to a value object:
 * ```
 * {
 *  "type": "FeatureCollection",
 *  "features": [
 *    {
 *      "type": "Feature",
 *      "properties": {},
 *      "geometry": {
 *        "type": "Point",
 *        "coordinates": [
 *          6.0033416748046875,
 *          43.70908256335716
 *        ]
 *      }
 *    }
 *   ]
 * }
 * ```
 */
class RawGeoJsonActivity : AppCompatActivity() {

  private lateinit var mapboxMap: MapboxMap

  override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)
    val mapView = MapView(this)
    setContentView(mapView)
    mapboxMap = mapView.mapboxMap.apply {
      setCamera(
        CameraOptions.Builder()
          .center(Point.fromLngLat(6.0033416748046875, 43.70908256335716))
          .zoom(16.0)
          .build()
      )
      loadStyle(Style.STANDARD) { addGeoJsonSource(it) }
    }
  }

  private fun addGeoJsonSource(style: Style) {
    val geojson = Value.fromJson(
      """
      {
        "type": "FeatureCollection",
        "features": [
          {
            "type": "Feature",
            "properties": {},
            "geometry": {
              "type": "Point",
              "coordinates": [
                6.0033416748046875,
                43.70908256335716
              ]
            }
          }
        ]
      }
      """.trimIndent()
    )

    if (geojson.isError) {
      throw RuntimeException("Invalid GeoJson:" + geojson.error)
    }

    val sourceParams = HashMap<String, Value>()
    sourceParams["type"] = Value("geojson")
    sourceParams["data"] = geojson.value!!
    val expected = style.addStyleSource("source", Value(sourceParams))

    if (expected.isError) {
      throw RuntimeException("Invalid GeoJson:" + expected.error)
    }

    style.addLayer(
      circleLayer("circle", "source") {
        circleColor(Color.BLACK)
        circleRadius(10.0)
      }
    )
  }
}
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