ズームレベルに依存する色
<?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.styles.ZoomDependentFillColorActivity"> <com.mapbox.mapboxsdk.maps.MapViewandroid:id="@+id/mapView"android:layout_width="match_parent"android:layout_height="match_parent"mapbox:mapbox_cameraTargetLat="40.73581"mapbox:mapbox_cameraTargetLng="-73.99155"mapbox:mapbox_cameraZoom="0"/> </FrameLayout>
ZoomDependentFillColorActivity.java
package com.mapbox.mapboxandroiddemo.examples.styles; import android.os.Bundle;import androidx.annotation.NonNull;import androidx.appcompat.app.AppCompatActivity; import com.mapbox.mapboxandroiddemo.R;import com.mapbox.mapboxsdk.Mapbox;import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;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.expressions.Expression;import com.mapbox.mapboxsdk.style.layers.FillLayer; import static com.mapbox.mapboxsdk.style.expressions.Expression.rgb;import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor; /*** Use runtime styling to change the water layer's fill color based on the map zoom level*/public class ZoomDependentFillColorActivity extends AppCompatActivity { 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_style_zoom_dependent_fill_color); mapView = findViewById(R.id.mapView);mapView.onCreate(savedInstanceState);mapView.getMapAsync(new OnMapReadyCallback() {@Overridepublic void onMapReady(@NonNull final MapboxMap mapboxMap) { mapboxMap.setStyle(Style.DARK, new Style.OnStyleLoaded() {@Overridepublic void onStyleLoaded(@NonNull Style style) { FillLayer layer = style.getLayerAs("water");if (layer == null) {return;} //Set a zoom function to update the color of the waterlayer.setProperties(fillColor(Expression.interpolate(Expression.exponential(1f), zoom(),stop(1f, rgb(0,209,22)),stop(8.5f, rgb(10,88,255)),stop(10f, rgb(255,10,10)),stop(18f, rgb(251,255,0))))); mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(40.73581, -73.99155), 12), 12000); }});}});} // Add the mapView lifecycle to the activity's lifecycle methods@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();mapView.onDestroy();} @Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);mapView.onSaveInstanceState(outState);}}