Examples

Draw a polygon

activity_dds_draw_polygon
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:mapbox="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".examples.dds.DrawPolygonActivity">
<com.mapbox.mapboxsdk.maps.MapView
android:id="@+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent"
mapbox:mapbox_cameraTargetLat="45.520486"
mapbox:mapbox_cameraTargetLng="-122.673541"
mapbox:mapbox_cameraZoom="11"/>
</FrameLayout>
DrawPolygonActivity
package com.mapbox.mapboxandroiddemo.examples.dds;
import android.graphics.Color;
import android.os.Bundle;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import com.mapbox.geojson.Point;
import com.mapbox.geojson.Polygon;
import com.mapbox.mapboxandroiddemo.R;
import com.mapbox.mapboxsdk.Mapbox;
import com.mapbox.mapboxsdk.maps.MapView;
import com.mapbox.mapboxsdk.maps.MapboxMap;
import com.mapbox.mapboxsdk.maps.OnMapReadyCallback;
import com.mapbox.mapboxsdk.maps.Style;
import com.mapbox.mapboxsdk.style.layers.FillLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import java.util.ArrayList;
import java.util.List;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;
/**
* Draw a vector polygon on a map with the Mapbox Android SDK.
*/
public class DrawPolygonActivity extends AppCompatActivity {
private MapView mapView;
private static final List<List<Point>> POINTS = new ArrayList<>();
private static final List<Point> OUTER_POINTS = new ArrayList<>();
static {
OUTER_POINTS.add(Point.fromLngLat(-122.685699, 45.522585));
OUTER_POINTS.add(Point.fromLngLat(-122.708873, 45.534611));
OUTER_POINTS.add(Point.fromLngLat(-122.678833, 45.530883));
OUTER_POINTS.add(Point.fromLngLat(-122.667503, 45.547115));
OUTER_POINTS.add(Point.fromLngLat(-122.660121, 45.530643));
OUTER_POINTS.add(Point.fromLngLat(-122.636260, 45.533529));
OUTER_POINTS.add(Point.fromLngLat(-122.659091, 45.521743));
OUTER_POINTS.add(Point.fromLngLat(-122.648792, 45.510677));
OUTER_POINTS.add(Point.fromLngLat(-122.664070, 45.515008));
OUTER_POINTS.add(Point.fromLngLat(-122.669048, 45.502496));
OUTER_POINTS.add(Point.fromLngLat(-122.678489, 45.515369));
OUTER_POINTS.add(Point.fromLngLat(-122.702007, 45.506346));
OUTER_POINTS.add(Point.fromLngLat(-122.685699, 45.522585));
POINTS.add(OUTER_POINTS);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Mapbox access token is configured here. This needs to be called either in your application
// object or in the same activity which contains the mapview.
Mapbox.getInstance(this, getString(R.string.access_token));
// This contains the MapView in XML and needs to be called after the access token is configured.
setContentView(R.layout.activity_dds_draw_polygon);
mapView = findViewById(R.id.mapView);
mapView.onCreate(savedInstanceState);
mapView.getMapAsync(new OnMapReadyCallback() {
@Override
public void onMapReady(@NonNull final MapboxMap mapboxMap) {
mapboxMap.setStyle(Style.MAPBOX_STREETS, new Style.OnStyleLoaded() {
@Override
public void onStyleLoaded(@NonNull Style style) {
style.addSource(new GeoJsonSource("source-id", Polygon.fromLngLats(POINTS)));
style.addLayerBelow(new FillLayer("layer-id", "source-id").withProperties(
fillColor(Color.parseColor("#3bb2d0"))), "settlement-label"
);
}
});
}
});
}
@Override
public void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
public void onPause() {
super.onPause();
mapView.onPause();
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
}
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