建物の選択
<?xml version="1.0" encoding="utf-8"?><FrameLayoutxmlns: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=".examples.query.SelectBuildingActivity"> <com.mapbox.mapboxsdk.maps.MapViewandroid:id="@+id/mapView"android:layout_width="match_parent"android:layout_height="match_parent"mapbox:mapbox_cameraTargetLat="29.7565"mapbox:mapbox_cameraTargetLng="-95.3625"mapbox:mapbox_cameraZoom="16"/> </FrameLayout>
SelectBuildingActivity.java
package com.mapbox.mapboxandroiddemo.examples.query; import android.graphics.Color;import android.graphics.PointF;import android.os.Bundle;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity;import android.widget.Toast; import com.mapbox.geojson.Feature;import com.mapbox.geojson.FeatureCollection;import com.mapbox.mapboxandroiddemo.R;import com.mapbox.mapboxsdk.Mapbox;import com.mapbox.mapboxsdk.geometry.LatLng;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.FillLayer;import com.mapbox.mapboxsdk.style.layers.PropertyFactory;import com.mapbox.mapboxsdk.style.sources.GeoJsonSource; import java.util.List; /*** Use the query feature to select a building, get its geometry, and draw a polygon highlighting it.*/public class SelectBuildingActivity extends AppCompatActivity implements OnMapReadyCallback,MapboxMap.OnMapClickListener { private MapView mapView;private MapboxMap mapboxMap; @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_query_select_building); mapView = findViewById(R.id.mapView);mapView.onCreate(savedInstanceState);mapView.getMapAsync(this);} @Overridepublic void onMapReady(@NonNull final MapboxMap mapboxMap) {SelectBuildingActivity.this.mapboxMap = mapboxMap;mapboxMap.setStyle(Style.LIGHT, new Style.OnStyleLoaded() {@Overridepublic void onStyleLoaded(@NonNull Style style) {style.addSource(new GeoJsonSource("source-id")); style.addLayer(new FillLayer("layer-id", "source-id").withProperties(PropertyFactory.fillColor(Color.parseColor("#8A8ACB")))); mapboxMap.addOnMapClickListener(SelectBuildingActivity.this);Toast.makeText(SelectBuildingActivity.this,getString(R.string.click_on_map_instruction), Toast.LENGTH_SHORT).show();}});} @Overridepublic boolean onMapClick(@NonNull LatLng point) {mapboxMap.getStyle(new Style.OnStyleLoaded() {@Overridepublic void onStyleLoaded(@NonNull Style style) {final PointF finalPoint = mapboxMap.getProjection().toScreenLocation(point);List<Feature> features = mapboxMap.queryRenderedFeatures(finalPoint, "building");if (features.size() > 0) {GeoJsonSource selectedBuildingSource = style.getSourceAs("source-id");if (selectedBuildingSource != null) {selectedBuildingSource.setGeoJson(FeatureCollection.fromFeatures(features));}}}});return true;} @Overridepublic void onResume() {super.onResume();mapView.onResume();} @Overrideprotected void onStart() {super.onStart();mapView.onStart();} @Overrideprotected void onStop() {super.onStop();mapView.onStop();} @Overridepublic void onPause() {super.onPause();mapView.onPause();} @Overridepublic void onLowMemory() {super.onLowMemory();mapView.onLowMemory();} @Overrideprotected void onDestroy() {super.onDestroy();if (mapboxMap != null) {mapboxMap.removeOnMapClickListener(this);}mapView.onDestroy();} @Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);mapView.onSaveInstanceState(outState);}}