Flutter-Setstat有时会更新，有时不会

Question

每次我单击圆圈时，它都会更新颜色和颜色。但是，有时，它总是回到以前的状态，因为银行已更新为正确的状态..我的代码有什么问题？就像不同步一样。每次我单击圆圈时，它都会更新存储库并更新颜色。但是有时候它总是会回到以前的状态。 我的代码怎么了？

import 'package:bets_online/Api/remover_reservas_api.dart';
import 'package:bets_online/Api/validar_compra_api.dart';
import 'package:bets_online/pages/ConfirmarPage.dart';
import 'package:bets_online/Widgets/alerta.dart';
import 'package:bets_online/Model/numero.dart';
import 'package:bets_online/Api/numeros_api.dart';
import 'package:bets_online/Api/selecionar_api.dart';
import 'package:flutter/material.dart';

class NumeroPage extends StatefulWidget {
  final int idPremio;
  int selected;

  NumeroPage({this.idPremio, this.selected});

  @override
  _NumeroPageState createState() => _NumeroPageState();
}

class _NumeroPageState extends State<NumeroPage> {
  @override
  Future<bool> _onWillPop() async {
    await Remover.removerReservas();
    return true;
  }

  Widget build(BuildContext context) {
    return WillPopScope(
        onWillPop: _onWillPop,
        child: Scaffold(
          appBar: AppBar(
            title: Text("Escolha os Números",
                style: TextStyle(color: Colors.white, fontSize: 25)),
            centerTitle: true,
            backgroundColor: Colors.deepPurple[300],
          ),
          body: _body(),
        ));
  }

  _body() {

    Future<List<Numero>> numeros = NumeroApi.getNumeros(widget.idPremio);
    return FutureBuilder(

      future: numeros,
      builder: (context, snapshot) {
        if (snapshot.hasError) {
          return Center(
              child: Text("Erro, verifique com o administrador do Sistema.",
                  style: TextStyle(fontSize: 25, color: Colors.redAccent)));
        }
        if (!snapshot.hasData) {
          return Center(child: CircularProgressIndicator());
        }
        List<Numero> numeros = snapshot.data;

        return _listView(numeros);
      },
    );
  }
  _onClickSelecionar(BuildContext context, int idNumero, int idPremio,
      String latitude, String logintude) async {
    var numero = await SelecionarNumero.Selecionar(
        idNumero, idPremio, latitude, logintude);

    if (numero.error) {
      alert(context, numero.message, "Erro");
    }
  }

  _listView(numeros) {
    return Scaffold(
      body: GridView.builder(
        shrinkWrap: true,
        itemCount: numeros.length,
        gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisSpacing: 5,
          mainAxisSpacing: 5,
          crossAxisCount: 5,
        ),
        itemBuilder: (BuildContext context, int index) => GestureDetector(
          child: Container(
            decoration: BoxDecoration(
                color: numeros[index + 0].status == "RE" &&
                        numeros[index + 0].numeroUsuarioAtual == 'N'
                    ? Colors.grey[400]
                    : numeros[index + 0].status == "PG"
                        ? Colors.lightBlueAccent
                        : (numeros[index + 0].numeroUsuarioAtual == 'S' &&
                                numeros[index + 0].status == "RE")
                            ? Colors.yellowAccent
                            : Colors.green,
                borderRadius: new BorderRadius.circular(100.0),
                boxShadow: [
                  BoxShadow(
                    offset: const Offset(2.0, 2.0),
                    blurRadius: 4.0,
                    spreadRadius: 1.0,
                  ),
                ]),
            child: Center(
              child: Text('${index + 1}',
                  style:
                      new TextStyle(fontWeight: FontWeight.bold, fontSize: 24)),
            ),
          ),
          onTap: () {
            setState(() {
              _listView(numeros);
              Numero p = numeros[index + 0];

              _onClickSelecionar(
                  context, p.idNumero, p.idPremio, '1111', '222222');
              return _listView(numeros);
            });
          },
        ),
        primary: false,
        padding: const EdgeInsets.all(10),
      ),
      bottomNavigationBar: Padding(
        padding: EdgeInsets.all(0.0),
        child: RaisedButton(
          onPressed: () {
            _navegaConfirmar(context);
          },
          padding: EdgeInsets.all(15.0),
          color: Colors.redAccent,
          textColor: Colors.white,
          child: Text('Comprar',
              style: TextStyle(
                  color: Colors.white,
                  fontSize: 25.0,
                  fontWeight: FontWeight.bold)),
        ),
      ),
    );
  }


  _navegaConfirmar(BuildContext context) async {
    var validar = await Valida.validarCompra(widget.idPremio);
    if (validar.error) {
      alert(context, validar.message, "Erro");
    } else {
      Navigator.push(
        context,
        MaterialPageRoute(
            builder: (context) => ConfirmarPage(idPremio: widget.idPremio)),
      );
    }
  }
}