回転カメラ

package com.mapbox.mapboxandroiddemo.examples.camera;
 
import android.animation.ValueAnimator;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.view.animation.LinearInterpolator;
import android.widget.Toast;
 
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.camera.CameraPosition;
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;
 
/**
* Animate the map's camera to slowly spin around a single point ont the map.
*/
public class SlowlyRotatingCameraActivity extends AppCompatActivity implements OnMapReadyCallback,
MapboxMap.OnMapClickListener {
 
private static final int DESIRED_NUM_OF_SPINS = 5;
private static final int DESIRED_SECONDS_PER_ONE_FULL_360_SPIN = 40;
private MapView mapView;
private MapboxMap mapboxMap;
private ValueAnimator animator;
 
@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_slow_spin);
 
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
 
@Override
public void onMapReady(final MapboxMap mapboxMap) {
mapboxMap.setStyle(Style.SATELLITE_STREETS, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
SlowlyRotatingCameraActivity.this.mapboxMap = mapboxMap;
 
mapboxMap.addOnMapClickListener(SlowlyRotatingCameraActivity.this);
 
// Toast instructing user to tap on the map
Toast.makeText(
SlowlyRotatingCameraActivity.this, getString(R.string.rotating_camera_toast_instruction),
Toast.LENGTH_LONG).show();
 
startMapCameraSpinningAnimation(mapboxMap.getCameraPosition().target);
}
});
}
 
@Override
public boolean onMapClick(@NonNull LatLng point) {
startMapCameraSpinningAnimation(point);
return true;
}
 
/**
* Set up and start the spin animation. The Android system ValueAnimator emits a new value and that value is
* used as the map camera's new bearing rotation amount. A smooth "new helicopter" type of effect is created
* by using a LinearInterpolator.
*
* @param mapCameraTargetLocation the map location that the map camera should spin around
*/
private void startMapCameraSpinningAnimation(@NonNull final LatLng mapCameraTargetLocation) {
if (animator != null) {
animator.cancel();
}
animator = ValueAnimator.ofFloat(0, DESIRED_NUM_OF_SPINS * 360);
animator.setDuration(
// Multiplying by 1000 to convert to milliseconds
DESIRED_NUM_OF_SPINS * DESIRED_SECONDS_PER_ONE_FULL_360_SPIN * 1000);
animator.setInterpolator(new LinearInterpolator());
animator.setStartDelay(1000);
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
// Retrieve the new animation number to use as the map camera bearing value
Float newBearingValue = (Float) valueAnimator.getAnimatedValue();
 
// Use the animation number in a new camera position and then direct the map camera to move to the new position
mapboxMap.moveCamera(CameraUpdateFactory
.newCameraPosition(new CameraPosition.Builder()
.target(new LatLng(mapCameraTargetLocation.getLatitude(), mapCameraTargetLocation.getLongitude()))
.bearing(newBearingValue)
.build()));
}
});
animator.start();
}
 
@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);
}
if (animator != null) {
animator.end();
}
mapView.onDestroy();
}
}