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package com.mapbox.mapboxsdk.testapp.activity.feature;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
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.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.BackgroundLayer;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.utils.ResourceUtils;
import java.io.IOException;
import java.util.List;
import timber.log.Timber;
import static com.mapbox.mapboxsdk.style.expressions.Expression.rgb;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.backgroundColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
/**
* Test activity showcasing using the query rendered features API to count Symbols in a rectangle.
*/
public class QueryRenderedFeaturesBoxSymbolCountActivity extends AppCompatActivity {
public MapView mapView;
private MapboxMap mapboxMap;
private Toast toast;
@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 -> {
QueryRenderedFeaturesBoxSymbolCountActivity.this.mapboxMap = mapboxMap;
try {
String testPoints = ResourceUtils.readRawResource(mapView.getContext(), R.raw.test_points_utrecht);
Bitmap markerImage = BitmapFactory.decodeResource(getResources(), R.drawable.mapbox_marker_icon_default);
mapboxMap.setStyle(new Style.Builder()
.withLayer(
new BackgroundLayer("bg")
.withProperties(
backgroundColor(rgb(120, 161, 226))
)
)
.withLayer(
new SymbolLayer("symbols-layer", "symbols-source")
.withProperties(
iconImage("test-icon")
)
)
.withSource(
new GeoJsonSource("symbols-source", testPoints)
)
.withImage("test-icon", markerImage)
);
} catch (IOException exception) {
exception.printStackTrace();
}
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", box);
List<Feature> features = mapboxMap.queryRenderedFeatures(box, "symbols-layer");
// Show count
if (toast != null) {
toast.cancel();
}
toast = Toast.makeText(
QueryRenderedFeaturesBoxSymbolCountActivity.this,
String.format("%s features in box", features.size()),
Toast.LENGTH_SHORT);
toast.show();
});
});
}
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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