カメラを境界ボックスに収める | Maps SDK | ドキュメント

activity_camera_bounding_box

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns: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.camera.BoundingBoxCameraActivity">
 
<com.mapbox.mapboxsdk.maps.MapView
android:id="@+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
mapbox:mapbox_cameraTargetLat="37.431"
mapbox:mapbox_cameraTargetLng="-120.981"
mapbox:mapbox_cameraZoom="4"/>
 
</FrameLayout>

BoundingBoxCameraActivity.java

package com.mapbox.mapboxandroiddemo.examples.camera;
 
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.geojson.Point;
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.geometry.LatLngBounds;
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.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.utils.BitmapUtils;
 
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconOffset;
 
/**
* Fit a map to a bounding box
*/
public class BoundingBoxCameraActivity extends AppCompatActivity implements OnMapReadyCallback,
MapboxMap.OnMapClickListener {
 
private MapView mapView;
private MapboxMap mapboxMap;
 
private static final LatLng locationOne = new LatLng(36.532128, -93.489121);
private static final LatLng locationTwo = new LatLng(25.837058, -106.646234);
 
@Override
protected 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_camera_bounding_box);
 
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
 
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
 
BoundingBoxCameraActivity.this.mapboxMap = mapboxMap;
 
mapboxMap.setStyle(Style.MAPBOX_STREETS, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
 
addMarkerIconsToMap(style);
 
// Toast instructing user to tap on the map to start animation and set bounds
Toast.makeText(
BoundingBoxCameraActivity.this,
getString(R.string.tap_on_map_instruction),
Toast.LENGTH_LONG
).show();
 
mapboxMap.addOnMapClickListener(BoundingBoxCameraActivity.this);
}
});
}
 
private void addMarkerIconsToMap(@NonNull Style loadedMapStyle) {
loadedMapStyle.addImage("icon-id", BitmapUtils.getBitmapFromDrawable(
getResources().getDrawable(R.drawable.red_marker)));
 
loadedMapStyle.addSource(new GeoJsonSource("source-id",
FeatureCollection.fromFeatures(new Feature[] {
Feature.fromGeometry(Point.fromLngLat(locationOne.getLongitude(), locationOne.getLatitude())),
Feature.fromGeometry(Point.fromLngLat(locationTwo.getLongitude(), locationTwo.getLatitude())),
})));
 
loadedMapStyle.addLayer(new SymbolLayer("layer-id",
"source-id").withProperties(
iconImage("icon-id"),
iconOffset(new Float[]{0f,-8f})
));
}
 
@Override
public boolean onMapClick(@NonNull LatLng point) {
LatLngBounds latLngBounds = new LatLngBounds.Builder()
.include(locationOne) // Northeast
.include(locationTwo) // Southwest
.build();
 
mapboxMap.easeCamera(CameraUpdateFactory.newLatLngBounds(latLngBounds, 50), 5000);
return true;
}
 
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
 
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
 
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
 
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
 
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
 
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
 
@Override
protected void onDestroy() {
super.onDestroy();
if (mapboxMap != null) {
mapboxMap.removeOnMapClickListener(this);
}
mapView.onDestroy();
}
}