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Added covid-19 example app and Updated the readme (#73)

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This commit is contained in:
Mohammed Mehdi
2021-07-26 00:26:58 +05:30
committed by GitHub
parent 48f14caf15
commit 3eaedb619c
72 changed files with 2166 additions and 0 deletions
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138
covid19_mobile_app/lib/screens/home.dart Normal file
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import 'dart:convert';
import 'package:covid19_mobile_app/resources/fetch_data_functions.dart';
import 'package:covid19_mobile_app/widgets/graph.dart';
import 'package:covid19_mobile_app/widgets/info_card.dart';
import '../widgets/drawer.dart';
import 'package:number_display/number_display.dart';
import 'package:flutter/material.dart';
class Home extends StatelessWidget {
final refreshKey = GlobalKey<RefreshIndicatorState>();
@override
Widget build(BuildContext context) {
return Scaffold(
drawer: DrawerWidget(),
appBar: AppBar(
title: Text(
"World Wide Cases",
),
centerTitle: true,
),
body: RefreshIndicator(
// pull to refresh
key: refreshKey,
onRefresh: () => Navigator.pushReplacement(context,
PageRouteBuilder(pageBuilder: (context, a1, a2) => Home())),
child: FutureBuilder(
future: getAllData(),
builder: (context, snapshot) {
// Display CircularProgressIndicator if data isn't fetched yet
if (snapshot.connectionState == ConnectionState.waiting)
return Center(child: CircularProgressIndicator());
// If in case an error occurs
if (snapshot.hasError) {
return Container(
child: Center(
child: Text(
"Failed to load data. Please check you wifi connection!",
style: TextStyle(color: Colors.red),
),
),
);
}
// results of all countries(taken together)
Map<String, dynamic> globalResults =
json.decode(snapshot.data['all']);
// daily cases results
List<Map<String, dynamic>> dailyCasesResults =
(snapshot.data['country']);
// daily deaths results
List<Map<String, dynamic>> dailyDeaths =
(snapshot.data['deaths']);
// daily recoveries results
List<Map<String, dynamic>> dailyRecoveries =
(snapshot.data['recovered']);
// To display data in a width-limited component
// Eg: converts 2,000,000 to 2M
final updateNumberDisplay = createDisplay(length: 4);
return Padding(
padding:
EdgeInsets.symmetric(horizontal: 10.0, vertical: 5.0),
child: ListView(
physics: BouncingScrollPhysics(),
children: <Widget>[
GridView.count(
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
crossAxisCount: 2,
children: <Widget>[
infoCard(context, "Total Cases",
globalResults['cases'].toString()),
infoCard(context, "Deaths",
globalResults['deaths'].toString()),
infoCard(context, "Recovered",
globalResults['recovered'].toString()),
infoCard(context, "Active",
globalResults['active'].toString()),
infoCard(context, "Updated",
updateNumberDisplay(globalResults['updated'])),
infoCard(context, "Affected Countries",
globalResults['affectedCountries'].toString()),
],
),
SizedBox(
height: 25.0,
),
Text(
"Daily Cases in India",
textAlign: TextAlign.center,
style: TextStyle(
fontSize: MediaQuery.of(context).size.height * 0.03,
),
),
SizedBox(
height: 5.0,
),
buildGraph(context, dailyCasesResults),
SizedBox(
height: 25.0,
),
Text(
"Daily Deaths in India",
textAlign: TextAlign.center,
style: TextStyle(
fontSize: MediaQuery.of(context).size.height * 0.03,
),
),
SizedBox(
height: 5.0,
),
buildGraph(context, dailyDeaths),
SizedBox(
height: 25.0,
),
Text(
"Daily Recoveries in India",
textAlign: TextAlign.center,
style: TextStyle(
fontSize: MediaQuery.of(context).size.height * 0.03,
),
),
SizedBox(
height: 5.0,
),
buildGraph(context, dailyRecoveries),
],
),
);
}),
));
}
}