Using Dart language and Flutter, is there a way that I can use the data saved in my google sheet as source data for my mobile application using Dart/Flutter without downloading offline copy of the file?
Yes, this is possible, with the below steps:
final request = await HttpClient().getUrl(Uri.parse( 'https://docs.google.com/spreadsheets/d/e/2PACX-1vQvf9tp4-fETDJbC-HRmRKvVFAXEAGO4lrYPpVeiYkB6nqqXdSs3CjX0eBMvjIoEeX9_qU6K2RWmzVk/pub?gid=0&single=true&output=csv'));
rowsAsListOfValues = const CsvToListConverter().convert(csvString);
DataTable(columns: const <DataColumn>[],rows: List.generate(rowsAsListOfValues.length - 1, (index) {return DataRow(cells: <DataCell>[DataCell())],
import 'package:flutter/material.dart';
import 'dart:convert';
import 'dart:io';
import 'dart:async';
import 'package:csv/csv.dart';
void main() {
runApp(App());
}
class App extends StatelessWidget {
// This widget is the root of your application.
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
visualDensity: VisualDensity.adaptivePlatformDensity,
),
home: HomePage(title: 'Flutter Demo Home Page'),
);
}
}
class HomePage extends StatefulWidget {
HomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_AppState createState() => _AppState();
}
Future<List<List<dynamic>>> fetchUserData() async {
final request = await HttpClient().getUrl(Uri.parse(
'https://docs.google.com/spreadsheets/d/e/2PACX-1vQvf9tp4-fETDJbC-HRmRKvVFAXEAGO4lrYPpVeiYkB6nqqXdSs3CjX0eBMvjIoEeX9_qU6K2RWmzVk/pub?gid=0&single=true&output=csv'));
final response = await request.close();
List<List<dynamic>> rowsAsListOfValues;
await for (final csvString in response.transform(const Utf8Decoder())) {
rowsAsListOfValues = const CsvToListConverter().convert(csvString);
}
return rowsAsListOfValues;
}
class _AppState extends State<HomePage> {
List<List<dynamic>> rowsAsListOfValues;
@override
void didChangeDependencies() async {
super.didChangeDependencies();
rowsAsListOfValues = await fetchUserData();
super.setState(() {}); // to update widget data
}
@override
void initState() {
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
rowsAsListOfValues == null
? Text("Loading data...")
: Text(
'', // $rowsAsListOfValues
),
rowsAsListOfValues == null
? CircularProgressIndicator()
: DataTable(
columns: const <DataColumn>[
DataColumn(
label: Text(
'City',
style: TextStyle(fontStyle: FontStyle.italic),
),
),
DataColumn(
label: Text(
'Branches',
style: TextStyle(fontStyle: FontStyle.italic),
),
),
],
rows: List.generate(rowsAsListOfValues.length - 1, (index) {
return DataRow(
cells: <DataCell>[
DataCell(Text('${rowsAsListOfValues[index + 1][0]}')),
DataCell(Text('${rowsAsListOfValues[index + 1][1]}')),
],
);
})),
],
),
),
);
}
}
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