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package com.mapbox.mapboxsdk.testapp.activity.annotation;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import com.mapbox.mapboxsdk.annotations.MarkerOptions;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.utils.GeoParseUtil;
import timber.log.Timber;
import java.io.IOException;
import java.lang.ref.WeakReference;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Random;
/**
* Test activity showcasing adding a large amount of Markers.
*/
public class BulkMarkerActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
private MapboxMap mapboxMap;
private MapView mapView;
private List<LatLng> locations;
private ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_marker_bulk);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(this::initMap);
}
private void initMap(MapboxMap mapboxMap) {
this.mapboxMap = mapboxMap;
mapboxMap.setStyle(Style.MAPBOX_STREETS);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
ArrayAdapter<CharSequence> spinnerAdapter = ArrayAdapter.createFromResource(
this, R.array.bulk_marker_list, android.R.layout.simple_spinner_item);
spinnerAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
getMenuInflater().inflate(R.menu.menu_bulk_marker, menu);
MenuItem item = menu.findItem(R.id.spinner);
Spinner spinner = (Spinner) MenuItemCompat.getActionView(item);
spinner.setAdapter(spinnerAdapter);
spinner.setOnItemSelectedListener(BulkMarkerActivity.this);
return true;
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
int amount = Integer.valueOf(getResources().getStringArray(R.array.bulk_marker_list)[position]);
if (locations == null) {
progressDialog = ProgressDialog.show(this, "Loading", "Fetching markers", false);
new LoadLocationTask(this, amount).execute();
} else {
showMarkers(amount);
}
}
private void onLatLngListLoaded(List<LatLng> latLngs, int amount) {
progressDialog.hide();
locations = latLngs;
showMarkers(amount);
}
private void showMarkers(int amount) {
if (mapboxMap == null || locations == null || mapView.isDestroyed()) {
return;
}
mapboxMap.clear();
if (locations.size() < amount) {
amount = locations.size();
}
showGlMarkers(amount);
}
private void showGlMarkers(int amount) {
List<MarkerOptions> markerOptionsList = new ArrayList<>();
DecimalFormat formatter = new DecimalFormat("#.#####");
Random random = new Random();
int randomIndex;
for (int i = 0; i < amount; i++) {
randomIndex = random.nextInt(locations.size());
LatLng latLng = locations.get(randomIndex);
markerOptionsList.add(new MarkerOptions()
.position(latLng)
.title(String.valueOf(i))
.snippet(formatter.format(latLng.getLatitude()) + ", " + formatter.format(latLng.getLongitude())));
}
mapboxMap.addMarkers(markerOptionsList);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// nothing selected, nothing to do!
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
protected void onDestroy() {
super.onDestroy();
if (progressDialog != null) {
progressDialog.dismiss();
}
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
private static class LoadLocationTask extends AsyncTask<Void, Integer, List<LatLng>> {
private WeakReference<BulkMarkerActivity> activity;
private int amount;
private LoadLocationTask(BulkMarkerActivity activity, int amount) {
this.amount = amount;
this.activity = new WeakReference<>(activity);
}
@Override
protected List<LatLng> doInBackground(Void... params) {
BulkMarkerActivity activity = this.activity.get();
if (activity != null) {
String json = null;
try {
json = GeoParseUtil.loadStringFromAssets(activity.getApplicationContext(), "points.geojson");
} catch (IOException exception) {
Timber.e(exception, "Could not add markers");
}
if (json != null) {
return GeoParseUtil.parseGeoJsonCoordinates(json);
}
}
return null;
}
@Override
protected void onPostExecute(List<LatLng> locations) {
super.onPostExecute(locations);
BulkMarkerActivity activity = this.activity.get();
if (activity != null) {
activity.onLatLngListLoaded(locations, amount);
}
}
}
}
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