"get data from Instance of Future" Code Answer's

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get data from Instance of Future

Sparkling Squirrel on Mar 14, 2021

import 'package:flutter/material.dart';
import 'package:cloud_firestore/cloud_firestore.dart';

class HogeApp extends StatelessWidget {

  @override
  Widget build(BuildContext context) {
    // <1> Use FutureBuilder
    return FutureBuilder<QuerySnapshot>(
        // <2> Pass `Future<QuerySnapshot>` to future
        future: FirebaseFirestore.instance.collection('posts').get(),
        builder: (context, snapshot) {
          if (snapshot.hasData) {
            // <3> Retrieve `List<DocumentSnapshot>` from snapshot
            final List<DocumentSnapshot> documents = snapshot.data.docs;
            return ListView(
                children: documents
                    .map((doc) => Card(
                          child: ListTile(
                            title: Text(doc['text']),
                            subtitle: Text(doc['email']),
                          ),
                        ))
                    .toList());
          } else if (snapshot.hasError) {
            return Text('It's Error!');
          }
        });
  }
}

Source: dev.to

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"get data from Instance of Future" Code Answer's