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package com.mapbox.mapboxsdk.testapp.activity.style;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v4.content.res.ResourcesCompat;
import android.support.v7.app.AppCompatActivity;
import android.view.MenuItem;
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.style.layers.CircleLayer;
import com.mapbox.mapboxsdk.style.layers.SymbolLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonOptions;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.mapboxsdk.testapp.R;
import java.net.MalformedURLException;
import java.net.URL;
import timber.log.Timber;
import static com.mapbox.mapboxsdk.style.layers.Filter.all;
import static com.mapbox.mapboxsdk.style.layers.Filter.gte;
import static com.mapbox.mapboxsdk.style.layers.Filter.lt;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.circleColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.circleRadius;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.iconImage;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textField;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.textSize;
/**
* Test activity showcasing using a geojson source and visualise that source as a cluster by using filters.
*/
public class GeoJsonClusteringActivity extends AppCompatActivity {
private MapView mapView;
private MapboxMap mapboxMap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_geojson_clustering);
// Initialize map as normal
mapView = (MapView) findViewById(R.id.mapView);
// noinspection ConstantConditions
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(map -> {
mapboxMap = map;
mapboxMap.animateCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(37.7749, 122.4194), 0));
// Add a clustered source with some layers
addClusteredGeoJsonSource();
});
}
@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 addClusteredGeoJsonSource() {
// Add a clustered source
try {
mapboxMap.addSource(
new GeoJsonSource("earthquakes",
new URL("https://www.mapbox.com/mapbox-gl-js/assets/earthquakes.geojson"),
new GeoJsonOptions()
.withCluster(true)
.withClusterMaxZoom(14)
.withClusterRadius(50)
)
);
} catch (MalformedURLException malformedUrlException) {
Timber.e(malformedUrlException,"That's not an url... ");
}
// Add unclustered layer
int[][] layers = new int[][] {
new int[] {150, ResourcesCompat.getColor(getResources(), R.color.redAccent, getTheme())},
new int[] {20, ResourcesCompat.getColor(getResources(), R.color.greenAccent, getTheme())},
new int[] {0, ResourcesCompat.getColor(getResources(), R.color.blueAccent, getTheme())}
};
SymbolLayer unclustered = new SymbolLayer("unclustered-points", "earthquakes");
unclustered.setProperties(iconImage("marker-15"));
mapboxMap.addLayer(unclustered);
for (int i = 0; i < layers.length; i++) {
// Add some nice circles
CircleLayer circles = new CircleLayer("cluster-" + i, "earthquakes");
circles.setProperties(
circleColor(layers[i][1]),
circleRadius(18f)
);
circles.setFilter(
i == 0
? gte("point_count", layers[i][0]) :
all(gte("point_count", layers[i][0]), lt("point_count", layers[i - 1][0]))
);
mapboxMap.addLayer(circles);
}
// Add the count labels
SymbolLayer count = new SymbolLayer("count", "earthquakes");
count.setProperties(
textField("{point_count}"),
textSize(12f),
textColor(Color.WHITE)
);
mapboxMap.addLayer(count);
// Zoom out to start
mapboxMap.animateCamera(CameraUpdateFactory.zoomTo(1));
}
}
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