platform/android/MapboxGLAndroidSDKTestApp/src/main/java/com/mapbox/mapboxsdk/testapp/activity/annotation/MarkerViewsInRectangleActivity.java


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package com.mapbox.mapboxsdk.testapp.activity.annotation;

import android.graphics.RectF;
import android.os.Bundle;
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 android.view.View;
import android.widget.Toast;

import com.mapbox.mapboxsdk.annotations.MarkerView;
import com.mapbox.mapboxsdk.annotations.MarkerViewOptions;
import com.mapbox.mapboxsdk.camera.CameraUpdateFactory;
import com.mapbox.mapboxsdk.geometry.LatLng;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.testapp.R;
import com.mapbox.mapboxsdk.testapp.activity.feature.QueryRenderedFeaturesBoxCountActivity;

import java.util.List;

public class MarkerViewsInRectangleActivity extends AppCompatActivity implements OnMapReadyCallback,
        View.OnClickListener {

    public MapView mapView;
    private MapboxMap mapboxMap;
    private View selectionBox;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_marker_view_in_rect);
        setupActionBar();

        selectionBox = findViewById(R.id.selection_box);

        //Initialize map as normal
        mapView = (MapView) findViewById(R.id.mapView);
        mapView.onCreate(savedInstanceState);
        mapView.getMapAsync(this);
    }

    @Override
    public void onMapReady(MapboxMap mapboxMap) {
        MarkerViewsInRectangleActivity.this.mapboxMap = mapboxMap;
        selectionBox.setOnClickListener(this);
        mapboxMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(52.0907, 5.1214), 16));
        mapboxMap.addMarker(new MarkerViewOptions().position(new LatLng(52.0907, 5.1214)));
    }

    @Override
    public void onClick(View 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(String.format("Querying box %s", box));
        List<MarkerView> markers = mapboxMap.getMarkerViewsInRect(box);

        //Show count
        Toast.makeText(
                MarkerViewsInRectangleActivity.this,
                String.format("%s markers inside box", markers.size()),
                Toast.LENGTH_SHORT).show();
    }

    @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();
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
            case android.R.id.home:
                onBackPressed();
                return true;
            default:
                return super.onOptionsItemSelected(item);
        }
    }

    private void setupActionBar() {
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        final ActionBar actionBar = getSupportActionBar();
        if (actionBar != null) {
            actionBar.setDisplayHomeAsUpEnabled(true);
            actionBar.setDisplayShowHomeEnabled(true);
        }
    }
}