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package com.mapbox.mapboxsdk.testapp.activity.feature;
import android.os.Bundle;
import com.google.android.material.floatingactionbutton.FloatingActionButton;
import androidx.core.content.ContextCompat;
import androidx.appcompat.app.AppCompatActivity;
import android.widget.Toast;
import com.google.gson.JsonObject;
import com.mapbox.geojson.Feature;
import com.mapbox.geojson.FeatureCollection;
import com.mapbox.geojson.Point;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.expressions.Expression;
import com.mapbox.mapboxsdk.style.layers.CircleLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import java.util.List;
import static com.mapbox.mapboxsdk.style.expressions.Expression.eq;
import static com.mapbox.mapboxsdk.style.expressions.Expression.get;
import static com.mapbox.mapboxsdk.style.expressions.Expression.literal;
import static com.mapbox.mapboxsdk.style.expressions.Expression.neq;
/**
* Test activity showcasing using the query source features API to query feature counts
*/
public class QuerySourceFeaturesActivity extends AppCompatActivity {
public MapView mapView;
private MapboxMap mapboxMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_query_source_features);
// Initialize map as normal
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(map -> {
this.mapboxMap = map;
mapboxMap.getStyle(this::initStyle);
mapboxMap.setStyle(Style.MAPBOX_STREETS);
});
}
private void initStyle(Style style) {
JsonObject properties = new JsonObject();
properties.addProperty("key1", "value1");
final GeoJsonSource source = new GeoJsonSource("test-source",
FeatureCollection.fromFeatures(new Feature[] {
Feature.fromGeometry(Point.fromLngLat(17.1, 51), properties),
Feature.fromGeometry(Point.fromLngLat(17.2, 51), properties),
Feature.fromGeometry(Point.fromLngLat(17.3, 51), properties),
Feature.fromGeometry(Point.fromLngLat(17.4, 51), properties),
}));
style.addSource(source);
Expression visible = eq(get("key1"), literal("value1"));
Expression invisible = neq(get("key1"), literal("value1"));
CircleLayer layer = new CircleLayer("test-layer", source.getId())
.withFilter(visible);
style.addLayer(layer);
// Add a click listener
mapboxMap.addOnMapClickListener(point -> {
// Query
List<Feature> features = source.querySourceFeatures(eq(get("key1"), literal("value1")));
Toast.makeText(QuerySourceFeaturesActivity.this, String.format("Found %s features",
features.size()), Toast.LENGTH_SHORT).show();
return false;
});
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setColorFilter(ContextCompat.getColor(this, R.color.primary));
fab.setOnClickListener(view -> {
Expression visibility = layer.getFilter();
if (visibility != null && visibility.equals(visible)) {
layer.setFilter(invisible);
fab.setImageResource(R.drawable.ic_layers_clear);
} else {
layer.setFilter(visible);
fab.setImageResource(R.drawable.ic_layers);
}
});
}
@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();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
}
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