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package com.mapbox.mapboxsdk.testapp.activity.feature;
import android.graphics.Color;
import android.graphics.RectF;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Toast;
import com.mapbox.geojson.Feature;
import com.mapbox.geojson.FeatureCollection;
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.FillLayer;
import com.mapbox.mapboxsdk.style.layers.Layer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import java.util.List;
import timber.log.Timber;
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.lt;
import static com.mapbox.mapboxsdk.style.expressions.Expression.toNumber;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;
/**
* Demo's query rendered features
*/
public class QueryRenderedFeaturesBoxHighlightActivity extends AppCompatActivity {
public MapView mapView;
private MapboxMap mapboxMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_query_features_box);
final View selectionBox = findViewById(R.id.selection_box);
// Initialize map as normal
mapView = (MapView) findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(mapboxMap -> {
QueryRenderedFeaturesBoxHighlightActivity.this.mapboxMap = mapboxMap;
// Add layer / source
final GeoJsonSource source = new GeoJsonSource("highlighted-shapes-source");
final Layer layer = new FillLayer("highlighted-shapes-layer", "highlighted-shapes-source")
.withProperties(fillColor(Color.RED));
selectionBox.setOnClickListener(view -> {
// Query
int top = selectionBox.getTop() - mapView.getTop();
int left = selectionBox.getLeft() - mapView.getLeft();
RectF box = new RectF(left, top, left + selectionBox.getWidth(), top + selectionBox.getHeight());
Timber.i("Querying box %s for buildings", box);
Expression filter = lt(toNumber(get("height")), literal(10));
List<Feature> features = mapboxMap.queryRenderedFeatures(box, filter, "building");
// Show count
Toast.makeText(
QueryRenderedFeaturesBoxHighlightActivity.this,
String.format("%s features in box", features.size()),
Toast.LENGTH_SHORT).show();
// Update source data
source.setGeoJson(FeatureCollection.fromFeatures(features));
});
mapboxMap.setStyle(new Style.Builder()
.fromUrl(Style.MAPBOX_STREETS)
.withSource(source)
.withLayer(layer)
);
});
}
public MapboxMap getMapboxMap() {
return mapboxMap;
}
@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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