Qfyilyi

I have a listview that returns a list of orders from my local database(sqflite) and it's working very well.

After a tile of the list is tapped I push the navigation to another page, when my second page is loaded I notice that future function is called again, my second page loads and works normally but to me it seems unnecessary to call the future function again.

Can I control this behavior?

Here is my code for the first page:

import 'package:flutter/material.dart';

import '../model/coleta.dart';

import 'coletarPedido.dart';



void selectedOrderTile(PedidoColeta pedidoColeta, BuildContext context) {

  Navigator.push(context, new MaterialPageRoute(builder: (context) => new ColetaPage(pedidoColeta: pedidoColeta)));

}



Future<List<PedidoColeta>> listaPedidosAguardandoColeta() async {

  return await PedidoColeta.retornaListaPedidosColeta(1);

}



Widget pedidosAguardandoColeta(context) {

  return new FutureBuilder<List<PedidoColeta>> (

    future: listaPedidosAguardandoColeta(),

    builder: (BuildContext context, snapshot) {

      if (snapshot.connectionState == ConnectionState.done) {

        if (snapshot.data == null || snapshot.data.length == 0) {

          return new Text("Nenhum pedido por aqui!");

        } else {

          return new ListView.separated(

            padding: const EdgeInsets.all(8.0),

              itemCount: snapshot.data.length,

              itemBuilder: (context, i) {

                return tilePedido(snapshot.data[i], context);

              },

              separatorBuilder: (context, i) {

                return Divider();

              },

          );

        }

      }

      return new Container(

        alignment: AlignmentDirectional.center,

        child: new CircularProgressIndicator()

      );

    },

  );

}



Widget tilePedido(PedidoColeta pedidoColeta, context) {

  return ListTile(

    leading: new Container(

      width: 50.0,

      height: 50.0,

      decoration: new BoxDecoration(

        shape: BoxShape.circle,

        color: Colors.grey[300],

        image: new DecorationImage(

          fit: BoxFit.fill,

          image: AssetImage(pedidoColeta.logoCliente)

        )

      )

    ),

    title: Text('Pedido: ' + pedidoColeta.idPedido.toString() + ' Ocam: ' + pedidoColeta.idOcam.toString(), style: Theme.of(context).textTheme.button),

    subtitle: Text('Total de Itens: ' + pedidoColeta.qtdItem.toString() + 'nData de Saída: ' + pedidoColeta.dataSaida.toString()),

    dense: true,

    onTap: () => selectedOrderTile(pedidoColeta, context),

  );

}