GeoJSONデータを使用した押し出しの高さの設定
<?xml version="1.0" encoding="utf-8"?><androidx.constraintlayout.widget.ConstraintLayoutxmlns:android="http://schemas.android.com/apk/res/android"xmlns:mapbox="http://schemas.android.com/apk/res-auto"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"tools:context="com.mapbox.mapboxandroiddemo.examples.extrusions.MarathonExtrusionActivity"> <com.mapbox.mapboxsdk.maps.MapViewandroid:id="@+id/mapView"android:layout_width="0dp"android:layout_height="0dp"android:layout_marginBottom="0dp"android:layout_marginLeft="0dp"android:layout_marginRight="0dp"android:layout_marginTop="0dp"mapbox:layout_constraintBottom_toBottomOf="parent"mapbox:layout_constraintHorizontal_bias="0.0"mapbox:layout_constraintLeft_toLeftOf="parent"mapbox:layout_constraintRight_toRightOf="parent"mapbox:layout_constraintTop_toTopOf="parent"mapbox:layout_constraintVertical_bias="1.0"mapbox:mapbox_cameraTargetLat="33.334915"mapbox:mapbox_cameraZoomMin="11"mapbox:mapbox_cameraTargetLng="-118.335074"mapbox:mapbox_cameraTilt="55.8873"mapbox:mapbox_cameraZoom="12.692151"/> </androidx.constraintlayout.widget.ConstraintLayout>
MarathonExtrusionActivity.java
package com.mapbox.mapboxandroiddemo.examples.extrusions; import android.graphics.Color;import android.os.Bundle; import com.mapbox.mapboxandroiddemo.R;import com.mapbox.mapboxsdk.Mapbox;import com.mapbox.mapboxsdk.maps.MapView;import com.mapbox.mapboxsdk.maps.MapboxMap;import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;import com.mapbox.mapboxsdk.maps.Style;import com.mapbox.mapboxsdk.style.layers.FillExtrusionLayer;import com.mapbox.mapboxsdk.style.sources.GeoJsonSource; import java.net.URI;import java.net.URISyntaxException; import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import timber.log.Timber; import static com.mapbox.mapboxsdk.style.expressions.Expression.get;import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillExtrusionColor;import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillExtrusionHeight;import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillExtrusionOpacity; /*** Use data-driven styling and GeoJSON data to set extrusions' heights*/public class MarathonExtrusionActivity extends AppCompatActivity implements OnMapReadyCallback { private MapView mapView; @Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState); // Mapbox access token is configured here. This needs to be called either in your application// object or in the same activity which contains the mapview.Mapbox.getInstance(this, getString(R.string.access_token)); // This contains the MapView in XML and needs to be called after the access token is configured.setContentView(R.layout.activity_marathon_extrusion); mapView = findViewById(R.id.mapView);mapView.onCreate(savedInstanceState);mapView.getMapAsync(this);} @Overridepublic void onMapReady(@NonNull final MapboxMap mapboxMap) {mapboxMap.setStyle(Style.SATELLITE, new Style.OnStyleLoaded() {@Overridepublic void onStyleLoaded(@NonNull Style style) {try {// Add the marathon route source to the map// Create a GeoJsonSource and use the Mapbox Datasets API to retrieve the GeoJSON data// More info about the Datasets API at https://www.mapbox.com/api-documentation/#retrieve-a-datasetGeoJsonSource courseRouteGeoJson = new GeoJsonSource("coursedata", new URI("asset://marathon_route.geojson"));style.addSource(courseRouteGeoJson); // Add FillExtrusion layer to map using GeoJSON datastyle.addLayer(new FillExtrusionLayer("course", "coursedata").withProperties(fillExtrusionColor(Color.YELLOW),fillExtrusionOpacity(0.7f),fillExtrusionHeight(get("e")))); } catch (URISyntaxException exception) {Timber.d(exception);}}});} @Overrideprotected void onStart() {super.onStart();mapView.onStart();} @Overrideprotected void onResume() {super.onResume();mapView.onResume();} @Overrideprotected void onPause() {super.onPause();mapView.onPause();} @Overrideprotected void onStop() {super.onStop();mapView.onStop();} @Overridepublic void onLowMemory() {super.onLowMemory();mapView.onLowMemory();} @Overrideprotected void onDestroy() {super.onDestroy();mapView.onDestroy();} @Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);mapView.onSaveInstanceState(outState);}}