Raw GeoJSON
Android Examples App Available
This example code is part of the Maps SDK for Android Examples App, a working Android project available on GitHub. Android developers are encouraged to run the examples app locally to interact with this example in an emulator and explore other features of the Maps SDK.
See our Run the Maps SDK for Android Examples App tutorial for step-by-step instructions.
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)
}
)
}
}
この{Type}は役に立ちましたか？