Neither The print statement nor anything below it run, and the error message points to the issue being the last line above starting with var time
. I also verified that earthquakes
is a growableList, which means that earthquakes[0]
should run without issue, but it doesn't... What am I doing wrong? Let me know if the question needs more clarification and I'll provide it.
Link to gif of error
Link to code on GitHub
The problematic part of my code is as follows. Error reported on line 43.
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:http/http.dart' as http;
import 'package:intl/intl.dart';
class Quake extends StatefulWidget {
var _data;
Quake(this._data);
@override
State<StatefulWidget> createState() => new QuakeState(_data);
}
class QuakeState extends State<Quake> {
// https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_day.geojson
// "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_day.geojson";
var _data;
QuakeState(this._data);
@override
Widget build(BuildContext context) {
// debugPrint(_data['features'].runtimeType.toString());
List earthquakes = _data['features'];
return new Scaffold(
appBar: new AppBar(
title: new Text("Quakes - USGS All Earthquakes"),
backgroundColor: Colors.red,
centerTitle: true,
),
body: new ListView.builder(
itemCount: earthquakes.length,
itemBuilder: (BuildContext context, int index) {
print("${earthquakes[index]}");
var earthquake = earthquakes[index];
var time = earthquake['properties']['time'];
time *= 1000;
//var dateTime = new DateTime.fromMillisecondsSinceEpoch(int.parse(time));
//time = new DateFormat.yMMMMd(dateTime).add_jm();
return new ListTile(
title: new Text(time ?? "Empty"),
);
}));
}
}
Future<Map> getJson(String url) async {
return await http.get(url).then((response) => json.decode(response.body));
}
title: new Text(time ?? "Empty"),
should be
title: new Text(time != null ? '$time' : "Empty"),
or
title: new Text('${time ?? "Empty"}'),
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With