// Context context = ...;
// File geoPackageFile = ...;

// Get a manager
GeoPackageManager manager = GeoPackageFactory.getManager(context);

// Import database
boolean imported = manager.importGeoPackage(geoPackageFile);

// Available databases
List<String> databases = manager.databases();

// Open database
GeoPackage geoPackage = manager.open(name);

// GeoPackage Table DAOs
SpatialReferenceSystemDao srsDao = geoPackage.getSpatialReferenceSystemDao();
ContentsDao contentsDao = geoPackage.getContentsDao();
GeometryColumnsDao geomColumnsDao = geoPackage.getGeometryColumnsDao();
TileMatrixSetDao tileMatrixSetDao = geoPackage.getTileMatrixSetDao();
TileMatrixDao tileMatrixDao = geoPackage.getTileMatrixDao();
SchemaExtension schemaExtension = new SchemaExtension(geoPackage);
DataColumnsDao dataColumnsDao = schemaExtension.getDataColumnsDao();
DataColumnConstraintsDao dataColumnConstraintsDao = schemaExtension
        .getDataColumnConstraintsDao();
MetadataExtension metadataExtension = new MetadataExtension(geoPackage);
MetadataDao metadataDao = metadataExtension.getMetadataDao();
MetadataReferenceDao metadataReferenceDao = metadataExtension
        .getMetadataReferenceDao();
ExtensionsDao extensionsDao = geoPackage.getExtensionsDao();

// Feature and tile tables
List<String> features = geoPackage.getFeatureTables();
List<String> tiles = geoPackage.getTileTables();

// Query Features
String featureTable = features.get(0);
FeatureDao featureDao = geoPackage.getFeatureDao(featureTable);
FeatureCursor featureCursor = featureDao.queryForAll();
try {
    for (FeatureRow featureRow : featureCursor) {
        GeoPackageGeometryData geometryData = featureRow.getGeometry();
        if (geometryData != null && !geometryData.isEmpty()) {
            Geometry geometry = geometryData.getGeometry();
            // ...
        }
    }
} finally {
    featureCursor.close();
}

// Query Tiles
String tileTable = tiles.get(0);
TileDao tileDao = geoPackage.getTileDao(tileTable);
TileCursor tileCursor = tileDao.queryForAll();
try {
    for (TileRow tileRow : tileCursor) {
        byte[] tileBytes = tileRow.getTileData();
        Bitmap tileBitmap = tileRow.getTileDataBitmap();
        // ...
    }
} finally {
    tileCursor.close();
}

// Retrieve Tiles by XYZ
GeoPackageTileRetriever retriever = new GeoPackageTileRetriever(tileDao);
GeoPackageTile geoPackageTile = retriever.getTile(2, 2, 2);
if (geoPackageTile != null) {
    byte[] tileBytes = geoPackageTile.getData();
    Bitmap tileBitmap = geoPackageTile.getBitmap();
    // ...
}

// Retrieve Tiles by Bounding Box
TileCreator tileCreator = new TileCreator(
        tileDao, ProjectionFactory.getProjection(ProjectionConstants.EPSG_WORLD_GEODETIC_SYSTEM));
GeoPackageTile geoPackageTile2 = tileCreator.getTile(
        new BoundingBox(-90.0, 0.0, 0.0, 66.513260));
if (geoPackageTile2 != null) {
    byte[] tileBytes = geoPackageTile2.getData();
    Bitmap tileBitmap = geoPackageTile2.getBitmap();
    // ...
}

BoundingBox boundingBox = BoundingBox.worldWebMercator();
Projection projection = ProjectionFactory
        .getProjection(ProjectionConstants.EPSG_WEB_MERCATOR);

// Index Features
FeatureIndexManager indexer = new FeatureIndexManager(context, geoPackage, featureDao, false);
indexer.setIndexLocation(FeatureIndexType.GEOPACKAGE);
int indexedCount = indexer.index();

// Query Indexed Features in paginated chunks
FeatureIndexResults indexResults = indexer.queryForChunk(boundingBox,
        projection, 50);
FeaturePaginatedCursor paginatedCursor = indexer
        .paginate(indexResults);
for (FeatureRow featureRow : paginatedCursor) {
    GeoPackageGeometryData geometryData = featureRow.getGeometry();
    if (geometryData != null && !geometryData.isEmpty()) {
        Geometry geometry = geometryData.getGeometry();
        // ...
    }
}

// Draw tiles from features
FeatureTiles featureTiles = new DefaultFeatureTiles(context, featureDao, context.getResources().getDisplayMetrics().density, false);
featureTiles.setMaxFeaturesPerTile(1000); // Set max features to draw per tile
NumberFeaturesTile numberFeaturesTile = new NumberFeaturesTile(context); // Custom feature tile implementation
featureTiles.setMaxFeaturesTileDraw(numberFeaturesTile); // Draw feature count tiles when max features passed
featureTiles.setIndexManager(indexer); // Set index manager to query feature indices
Bitmap tile = featureTiles.drawTile(2, 2, 2);

// URL Tile Generator (generate tiles from a URL)
TileGenerator urlTileGenerator = new UrlTileGenerator(context, geoPackage,
        "url_tile_table", "http://url/{z}/{x}/{y}.png", 0, 0, boundingBox, projection);
int urlTileCount = urlTileGenerator.generateTiles();

// Feature Tile Generator (generate tiles from features)
TileGenerator featureTileGenerator = new FeatureTileGenerator(context, geoPackage,
        "tiles_" + featureTable, featureTiles, 1, 2, boundingBox, projection);
int featureTileCount = featureTileGenerator.generateTiles();

// Close feature tiles (and indexer)
featureTiles.close();

// Close database when done
geoPackage.close();