android – Flutter find out how to get context outdoors builder operate for showDialog

class _PokedexState extends State<Pokedex> {
  @override
  Widget construct(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Textual content('Pokédex'),
        centerTitle: true,
        backgroundColor: Colours.crimson,
        main: const Icon(MdiIcons.pokeball),
      ),
      physique: StreamBuilder(
        stream: readPokemon(),
        builder: (context, snapshot) {
          if (snapshot.hasError) {
            return const Textual content('Couldnu0027t discover any Pokémon :( ');
          } else if (snapshot.hasData) {
            ultimate customers = snapshot.information!;
            return ListView(
              youngsters: customers.map(buildPokemon).toList(),
            );
          } else {
            return const Heart(youngster: CircularProgressIndicator());
          }
        },
      ),
      floatingActionButtonLocation: FloatingActionButtonLocation.centerFloat,
      floatingActionButton: FloatingActionButton.prolonged(
        onPressed: () {
          Navigator.push(context,
              MaterialPageRoute(builder: (context) => const AddPokemonPage()));
        },
        label: const Textual content('Add Pokémon'),
        icon: new Icon(MdiIcons.pokemonGo),
        backgroundColor: Colours.crimson,
      ),
    );
  }
}

Widget buildPokemon(Pokemon pokemon) => (
Card(
  elevation: 4.0,
  youngster:Column(
    youngsters: [
      ListTile(
        title: Text(pokemon.name),
        subtitle: Text(pokemon.size),
        trailing:IconButton(onPressed: (){
          showDialog(context: context, builder: (_) => AlertDialog());
          DocumentReference docuRef = FirebaseFirestore.instance.collection('Pokemon').doc(pokemon.id);
          docuRef.delete();
        }, icon: const Icon(Icons.delete))
      ),

    ],
  ),
)
  );