Runtime styling
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.
RuntimeStylingActivity.kt
package com.mapbox.maps.testapp.examples
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.bindgen.Value
import com.mapbox.geojson.FeatureCollection
import com.mapbox.maps.*
import com.mapbox.maps.extension.style.expressions.dsl.generated.*
import com.mapbox.maps.extension.style.layers.*
import com.mapbox.maps.extension.style.layers.generated.FillLayer
import com.mapbox.maps.extension.style.layers.generated.fillExtrusionLayer
import com.mapbox.maps.extension.style.layers.generated.rasterLayer
import com.mapbox.maps.extension.style.layers.generated.symbolLayer
import com.mapbox.maps.extension.style.layers.properties.generated.*
import com.mapbox.maps.extension.style.light.generated.flatLight
import com.mapbox.maps.extension.style.light.setLight
import com.mapbox.maps.extension.style.sources.addSource
import com.mapbox.maps.extension.style.sources.generated.*
import com.mapbox.maps.extension.style.sources.getSource
import com.mapbox.maps.testapp.R
/**
* Example showcasing usage of style extension.
*/
class RuntimeStylingActivity : AppCompatActivity() {
private lateinit var mapboxMap: MapboxMap
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
val mapView = MapView(this, MapInitOptions(context = this, styleUri = Style.MAPBOX_STREETS))
setContentView(mapView)
mapboxMap = mapView.mapboxMap
mapboxMap.getStyle { setupStyle(it) }
}
private fun setupStyle(style: Style) {
addImage(style)
addSymbolSource(style)
addSymbolLayer(style)
addFillSource(style)
setFillLayer(style)
addFillExtrusionLayer(style)
addFillExtrusionLight(style)
addImageSource(style)
addRasterLayer(style)
addLayerWithoutStyleExtension(style)
val source = style.getSource("composite") as VectorSource
logE(TAG, "getSource: $source")
}
private fun addImage(style: Style) {
val bitmap = ContextCompat.getDrawable(this, R.drawable.android_symbol)?.toBitmap(64, 64)!!
val expected = style.addImage(
"myImage",
bitmap,
true
)
expected.error?.let {
logE(TAG, it)
}
expected.value?.let {
logD(TAG, it.toString())
}
}
private fun addSymbolSource(style: Style) {
val source = geoJsonSource(id = "points") {
featureCollection(
FeatureCollection.fromJson(
"""
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {
"count": 0
},
"geometry": {
"type": "Point",
"coordinates": [
-42.978515625,
22.024545601240337
]
}
},
{
"type": "Feature",
"properties": {
"count": 0
},
"geometry": {
"type": "Point",
"coordinates": [
-29.355468750000004,
25.64152637306577
]
}
},
{
"type": "Feature",
"properties": {
"count": 1
},
"geometry": {
"type": "Point",
"coordinates": [
-3.69140625,
-4.214943141390639
]
}
},
{
"type": "Feature",
"properties": {
"count": 1
},
"geometry": {
"type": "Point",
"coordinates": [
-27.861328125,
3.337953961416485
]
}
},
{
"type": "Feature",
"properties": {
"count": 1
},
"geometry": {
"type": "Point",
"coordinates": [
-27.773437499999996,
-17.644022027872712
]
}
}
]
}
""".trimIndent()
)
)
cluster(true)
prefetchZoomDelta(1)
}
logI(TAG, source.toString())
style.addSource(source)
logI(TAG, "prefetchZoomDelta : ${source.prefetchZoomDelta}")
}
private fun addSymbolLayer(style: Style) {
val symbolLayer = symbolLayer(layerId = "symbollayer", sourceId = "points") {
filter(
eq {
get {
literal("count")
}
literal(0)
}
)
iconImage(literal("myImage"))
iconOpacity(
subtract {
literal(1.0)
literal(0.6)
}
)
textField(
format {
formatSection("London") {
fontScale(1.0)
textFont(
listOf(
"Open Sans Regular",
"Arial Unicode MS Regular"
)
)
textColor(Color.RED)
}
formatSection(
image {
literal("london-underground")
}
) {
fontScale(0.9)
}
formatSection("underground") {
fontScale(0.8)
textFont(
listOf(
"Open Sans Regular",
"Arial Unicode MS Regular"
)
)
textColor(Color.WHITE)
}
}
)
iconColor(Color.GREEN)
textAnchor(TextAnchor.CENTER)
iconAnchor(IconAnchor.BOTTOM)
textIgnorePlacement(false)
iconIgnorePlacement(false)
}
style.addLayer(symbolLayer)
logI(TAG, symbolLayer.iconOpacityAsExpression.toString())
}
private fun addFillSource(style: Style) {
val polygon = geoJsonSource(id = "polygon") {
featureCollection(
FeatureCollection.fromJson(
"""
{
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {},
"geometry": {
"type": "Polygon",
"coordinates": [
[
[
-366.85546875,
18.145851771694467
],
[
-373.27148437499994,
12.726084296948196
],
[
-364.39453125,
6.577303118123887
],
[
-366.85546875,
18.145851771694467
]
]
]
}
}
]
}
""".trimIndent()
)
)
}
logI(TAG, polygon.toString())
style.addSource(polygon)
}
private fun setFillLayer(style: Style) {
val fillLayer = style.getLayer("water") as FillLayer
fillLayer.fillColor(
interpolate {
exponential {
literal(0.5)
}
zoom()
stop {
literal(1.0)
color(Color.RED)
}
stop {
literal(5.0)
color(Color.BLUE)
}
stop {
literal(10.0)
color(Color.GREEN)
}
}
)
fillLayer.visibility(Visibility.VISIBLE)
logI(TAG, fillLayer.fillColorAsExpression.toString())
}
private fun addFillExtrusionLayer(style: Style) {
val fillExtrusionLayer = fillExtrusionLayer("fillextrusion", "polygon") {
fillExtrusionHeight(1000000.0)
fillExtrusionColor(Color.GRAY)
fillExtrusionOpacity(1.0)
}
style.addLayer(fillExtrusionLayer)
}
private fun addFillExtrusionLight(style: Style) {
val light = flatLight {
anchor(Anchor.MAP)
color(Color.YELLOW)
position(
radialCoordinate = 10.0,
azimuthalAngle = 40.0,
polarAngle = 50.0
)
}
style.setLight(light)
}
private fun addImageSource(style: Style) {
val imageSource = imageSource("imag") {
url("https://upload.wikimedia.org/wikipedia/commons/thumb/1/1f/Mapbox_logo_2019.svg/2560px-Mapbox_logo_2019.svg.png")
coordinates(
listOf(
listOf(-35.859375, 58.44773280389084),
listOf(-16.171875, 58.44773280389084),
listOf(-16.171875, 54.7246201949245),
listOf(-35.859375, 54.7246201949245)
)
)
}
style.addSource(imageSource)
}
private fun addRasterLayer(style: Style) {
val raster = rasterLayer("raster", "imag") {}
style.addLayer(raster)
}
private fun addLayerWithoutStyleExtension(style: Style) {
val bitmap = ContextCompat.getDrawable(this, R.drawable.android_symbol)?.toBitmap(64, 64)
val expected = style.addStyleImage(
"myImage",
1f,
bitmap!!.toMapboxImage(),
false,
mutableListOf(),
mutableListOf(),
null
)
expected.error?.let {
logE(TAG, it)
}
expected.value?.let {
logD(TAG, it.toString())
}
val sourceParams = HashMap<String, Value>()
sourceParams["type"] = Value("geojson")
val data = HashMap<String, Value>()
data["type"] = Value("Feature")
val geometry = HashMap<String, Value>()
geometry["type"] = Value("Point")
geometry["coordinates"] = Value(listOf(Value(24.9384), Value(60.1699)))
data["geometry"] = Value(geometry)
sourceParams["data"] = Value(data)
style.addStyleSource("source", Value(sourceParams))
val layerParams = HashMap<String, Value>()
layerParams["id"] = Value("layer")
layerParams["type"] = Value("symbol")
layerParams["source"] = Value("source")
style.addStyleLayer(Value(layerParams), null)
style.setStyleLayerProperty("layer", "icon-image", Value("myImage"))
style.setStyleLayerProperty("layer", "icon-opacity", Value(1.0))
style.setStyleLayerProperty("layer", "icon-size", Value(5.0))
style.setStyleLayerProperty("layer", "icon-color", Value("white"))
}
companion object {
private const val TAG = "RuntimeStylingActivity"
}
}
この{Type}は役に立ちましたか？