Examples
Dynamic styling (32)

Indoor mapping floor plan

package com.mapbox.mapboxandroiddemo.examples.labs;
import android.graphics.Color;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.animation.AlphaAnimation;
import android.widget.Button;
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.layers.LineLayer;
import com.mapbox.mapboxsdk.style.sources.GeoJsonSource;
import com.mapbox.turf.TurfJoins;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import static com.mapbox.mapboxsdk.style.expressions.Expression.exponential;
import static com.mapbox.mapboxsdk.style.expressions.Expression.interpolate;
import static com.mapbox.mapboxsdk.style.expressions.Expression.stop;
import static com.mapbox.mapboxsdk.style.expressions.Expression.zoom;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.fillOpacity;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineColor;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineOpacity;
import static com.mapbox.mapboxsdk.style.layers.PropertyFactory.lineWidth;
/**
* Display an indoor map of a building with toggles to switch between floor levels
*/
public class IndoorMapActivity extends AppCompatActivity {
private GeoJsonSource indoorBuildingSource;
private List<List<Point>> boundingBoxList;
private View levelButtons;
private MapView mapView;
@Override
protected void onCreate(@Nullable 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_lab_indoor_map);
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) {
levelButtons = findViewById(R.id.floor_level_buttons);
final List<Point> boundingBox = new ArrayList<>();
boundingBox.add(Point.fromLngLat(-77.03791, 38.89715));
boundingBox.add(Point.fromLngLat(-77.03791, 38.89811));
boundingBox.add(Point.fromLngLat(-77.03532, 38.89811));
boundingBox.add(Point.fromLngLat(-77.03532, 38.89708));
boundingBoxList = new ArrayList<>();
boundingBoxList.add(boundingBox);
mapboxMap.addOnCameraMoveListener(new MapboxMap.OnCameraMoveListener() {
@Override
public void onCameraMove() {
if (mapboxMap.getCameraPosition().zoom > 16) {
if (TurfJoins.inside(Point.fromLngLat(mapboxMap.getCameraPosition().target.getLongitude(),
mapboxMap.getCameraPosition().target.getLatitude()), Polygon.fromLngLats(boundingBoxList))) {
if (levelButtons.getVisibility() != View.VISIBLE) {
showLevelButton();
}
} else {
if (levelButtons.getVisibility() == View.VISIBLE) {
hideLevelButton();
}
}
} else if (levelButtons.getVisibility() == View.VISIBLE) {
hideLevelButton();
}
}
});
indoorBuildingSource = new GeoJsonSource(
"indoor-building", loadJsonFromAsset("white_house_lvl_0.geojson"));
style.addSource(indoorBuildingSource);
// Add the building layers since we know zoom levels in range
loadBuildingLayer(style);
}
});
Button buttonSecondLevel = findViewById(R.id.second_level_button);
buttonSecondLevel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
indoorBuildingSource.setGeoJson(loadJsonFromAsset("white_house_lvl_1.geojson"));
}
});
Button buttonGroundLevel = findViewById(R.id.ground_level_button);
buttonGroundLevel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
indoorBuildingSource.setGeoJson(loadJsonFromAsset("white_house_lvl_0.geojson"));
}
});
}
});
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onStart() {
super.onStart();
mapView.onStart();
}
@Override
protected void onStop() {
super.onStop();
mapView.onStop();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void onLowMemory() {
super.onLowMemory();
mapView.onLowMemory();
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapView.onSaveInstanceState(outState);
}
private void hideLevelButton() {
// When the user moves away from our bounding box region or zooms out far enough the floor level
// buttons are faded out and hidden.
AlphaAnimation animation = new AlphaAnimation(1.0f, 0.0f);
animation.setDuration(500);
levelButtons.startAnimation(animation);
levelButtons.setVisibility(View.GONE);
}
private void showLevelButton() {
// When the user moves inside our bounding box region or zooms in to a high enough zoom level,
// the floor level buttons are faded out and hidden.
AlphaAnimation animation = new AlphaAnimation(0.0f, 1.0f);
animation.setDuration(500);
levelButtons.startAnimation(animation);
levelButtons.setVisibility(View.VISIBLE);
}
private void loadBuildingLayer(@NonNull Style style) {
// Method used to load the indoor layer on the map. First the fill layer is drawn and then the
// line layer is added.
FillLayer indoorBuildingLayer = new FillLayer("indoor-building-fill", "indoor-building").withProperties(
fillColor(Color.parseColor("#eeeeee")),
// Function.zoom is used here to fade out the indoor layer if zoom level is beyond 16. Only
// necessary to show the indoor map at high zoom levels.
fillOpacity(interpolate(exponential(1f), zoom(),
stop(16f, 0f),
stop(16.5f, 0.5f),
stop(17f, 1f))));
style.addLayer(indoorBuildingLayer);
LineLayer indoorBuildingLineLayer = new LineLayer("indoor-building-line", "indoor-building").withProperties(
lineColor(Color.parseColor("#50667f")),
lineWidth(0.5f),
lineOpacity(interpolate(exponential(1f), zoom(),
stop(16f, 0f),
stop(16.5f, 0.5f),
stop(17f, 1f))));
style.addLayer(indoorBuildingLineLayer);
}
private String loadJsonFromAsset(String filename) {
// Using this method to load in GeoJSON files from the assets folder.
try {
InputStream is = getAssets().open(filename);
int size = is.available();
byte[] buffer = new byte[size];
is.read(buffer);
is.close();
return new String(buffer, "UTF-8");
} catch (IOException ex) {
ex.printStackTrace();
return null;
}
}
}
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