タイムラプスの表示

package com.mapbox.mapboxandroiddemo.examples.styles;
 
import android.os.Bundle;
import android.os.Handler;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
 
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.geometry.LatLngQuad;
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.RasterLayer;
import com.mapbox.mapboxsdk.style.sources.ImageSource;
 
/**
* Use a series of images to create an animation with an ImageSource
*/
public class ImageSourceTimeLapseActivity extends AppCompatActivity implements OnMapReadyCallback {
 
private MapView mapView;
private Handler handler;
private Runnable runnable;
private static final String ID_IMAGE_SOURCE = "animated_image_source";
private static final String ID_IMAGE_LAYER = "animated_image_layer";
 
@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_image_source_time_lapse);
 
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
 
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
 
mapboxMap.setStyle(Style.DARK, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
style.addSource(new ImageSource(ID_IMAGE_SOURCE,
new LatLngQuad(
new LatLng(46.437, -80.425),
new LatLng(46.437, -71.516),
new LatLng(37.936, -71.516),
new LatLng(37.936, -80.425)), R.drawable.southeast_radar_0));
 
// Add layer
style.addLayer(new RasterLayer(ID_IMAGE_LAYER, ID_IMAGE_SOURCE));
 
// Loop the GeoJSON refreshing
handler = new Handler();
runnable = new RefreshImageRunnable(handler, style);
handler.postDelayed(runnable, 100);
}
});
}
 
private static class RefreshImageRunnable implements Runnable {
private final Style loadedMapStyle;
private final Handler handler;
private int[] drawables;
private int drawableIndex;
 
RefreshImageRunnable(Handler handler,Style loadedMapStyle) {
this.handler = handler;
this.loadedMapStyle = loadedMapStyle;
drawables = new int[4];
drawables[0] = R.drawable.southeast_radar_0;
drawables[1] = R.drawable.southeast_radar_1;
drawables[2] = R.drawable.southeast_radar_2;
drawables[3] = R.drawable.southeast_radar_3;
drawableIndex = 1;
}
 
@Override
public void run() {
((ImageSource) loadedMapStyle.getSource(ID_IMAGE_SOURCE)).setImage(drawables[drawableIndex++]);
if (drawableIndex > 3) {
drawableIndex = 0;
}
handler.postDelayed(this, 1000);
}
}
 
// Add the mapView lifecycle to the activity's lifecycle methods
 
@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 onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
 
@Override
protected void onDestroy() {
super.onDestroy();
if (handler != null && runnable != null) {
handler.removeCallbacks(runnable);
}
mapView.onDestroy();
}
 
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
}