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package com.mapbox.mapboxsdk.testapp.activity.style;
import android.os.Bundle;
import android.os.Handler;
import android.support.annotation.NonNull;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import timber.log.Timber;
import android.view.MenuItem;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import java.net.MalformedURLException;
import java.net.URL;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
/**
* Use realtime GeoJSON data streams to move a symbol on your map
* <p>
* GL-native equivalent of https://www.mapbox.com/mapbox-gl-js/example/live-geojson/
* </p>
*/
public class RealTimeGeoJsonActivity extends AppCompatActivity implements OnMapReadyCallback {
private final static String ID_GEOJSON_LAYER = "wanderdrone";
private final static String ID_GEOJSON_SOURCE = ID_GEOJSON_LAYER;
private final static String URL_GEOJSON_SOURCE = "https://wanderdrone.appspot.com/";
private MapView mapView;
private MapboxMap mapboxMap;
private Handler handler;
private Runnable runnable;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_default);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
ActionBar actionBar = getSupportActionBar();
if (actionBar != null) {
actionBar.setDisplayHomeAsUpEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
}
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this);
}
@Override
public void onMapReady(@NonNull final MapboxMap map) {
mapboxMap = map;
// add source
try {
mapboxMap.addSource(new GeoJsonSource(ID_GEOJSON_SOURCE, new URL(URL_GEOJSON_SOURCE)));
}catch (MalformedURLException e){
Timber.e("Invalid URL", e);
}
// add layer
SymbolLayer layer = new SymbolLayer(ID_GEOJSON_LAYER, ID_GEOJSON_SOURCE);
layer.setProperties(iconImage("rocket-15"));
mapboxMap.addLayer(layer);
// loop refresh geojson
handler = new Handler();
runnable = new RefreshGeoJsonRunnable(mapboxMap, handler);
handler.postDelayed(runnable, 2000);
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
handler.removeCallbacks(runnable);
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
private static class RefreshGeoJsonRunnable implements Runnable {
private MapboxMap mapboxMap;
private Handler handler;
RefreshGeoJsonRunnable(MapboxMap mapboxMap, Handler handler) {
this.mapboxMap = mapboxMap;
this.handler = handler;
}
@Override
public void run() {
((GeoJsonSource) mapboxMap.getSource(ID_GEOJSON_SOURCE)).setUrl(URL_GEOJSON_SOURCE);
handler.postDelayed(this, 2000);
}
}
}
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