initDB method Null safety

dynamic initDB()

Implementation

initDB() async {
  Directory documentsDirectory = await getApplicationDocumentsDirectory();
  String path = documentsDirectory.path + "/" + 'ConectaDB.db';
  return await openDatabase(path,
      version: 2, // si se añaden tablas cambiarla,
      onOpen: (db) {}, onCreate: (Database db, int version) async {
    //  await db.execute("DROP TABLE Button IF EXIST");

    await db.execute('CREATE TABLE Button('
        "id INTEGER PRIMARY KEY,"
        "app_name TEXT,"
        "package_name TEXT,"
        "url TEXT,"
        "icon BLOB"
        ')');
  });
}