import 'dart:convert';
import 'package:fl_chart/fl_chart.dart';
import 'package:flutter/material.dart';
import 'package:intl/intl.dart';
class ChartPage extends StatefulWidget {
@override
_ChartPageState createState() => _ChartPageState();
}
class _ChartPageState extends State<ChartPage> {
var format = DateFormat("d MMM");
int highPrice = 0;
List<Color> gradientColors = [
Color(0xffF3A183),
Color(0xffEC6F66),
];
@override
Widget build(BuildContext context) {
var rawResult =
'{ "status": true, "title": "Apple iPhone X (64GB) - Silver:Amazon:Electronics", "store": "Amazon", "myData": "1555698600:74000,1555785000:74000,1555871400:74000,1555957800:74000,1556044200:74000,1556130600:74000,1556217000:74000,1556303400:74000,1556389800:74000,1556476200:74000,1556562600:74000,1556649000:73950,1556735400:73950,1556821800:69999,1556908200:69999,1556994600:69999,1557081000:69999,1557167400:69999,1557253800:73999,1557340200:73999,1557426600:73999,1557513000:73999,1557599400:73999,1557685800:73999,1557772200:73999,1557858600:73999,1557945000:91900,1558031400:91900,1558117800:73999,1558204200:73999,1558290600:69999,1558377000:69999,1558463400:69999,1558549800:69999,1558636200:69999,1558722600:69999,1558809000:69999,1558895400:66499,1558981800:66499,1559068200:66499,1559154600:66499,1559241000:66499,1559327400:66499,1559413800:73799,1559500200:69999,1559586600:69999,1559673000:69999,1559759400:69999,1559845800:69999,1559932200:69999,1560018600:69999,1560105000:68999,1560191400:68999,1560277800:68999,1560364200:68999,1560450600:68999,1560537000:69999,1560623400:69999,1560709800:66499,1560796200:66499,1560882600:66499,1560969000:66499,1561055400:66499,1561141800:69999,1561228200:69999,1561314600:66499,1561401000:66499,1561487400:66499,1561573800:66499,1561660200:66499,1561746600:66499,1561833000:66499,1561919400:66499,1562005800:66499,1562092200:66499,1562178600:68999,1562265000:68999,1562351400:68999,1562437800:68999,1562524200:68999", "avg_price": "70,699", "low_price": "66,499", "curr_price": "68,999", "productUrl": "https:\/\/www.amazon.in\/Apple-iPhone-Silver-64GB-Storage\/dp\/B0711T2L8K\/", "drop_chance": "26" }';
var result = json.decode(rawResult);
var priceDataRaw = result["myData"].split(",");
double totalPrices = priceDataRaw.length.toDouble();
List<String> dates = new List(priceDataRaw.length);
List<FlSpot> prices = new List(priceDataRaw.length);
for (var i = 0; i < priceDataRaw.length; i++) {
var singleRawPrice = priceDataRaw[i];
var priceArr = singleRawPrice.split(":");
var date = new DateTime.fromMillisecondsSinceEpoch(
int.parse(priceArr[0]) * 1000);
var hoomanDate = format.format(date);
dates[i] = hoomanDate;
if (double.parse(priceArr[1]).floor() > highPrice) {
highPrice = double.parse(priceArr[1]).floor();
}
prices[i] = FlSpot(double.parse(i.toString()), double.parse(priceArr[1]));
}
int priceSpaceTop = (highPrice / 5).floor();
double maxPrice = (priceSpaceTop + highPrice).toDouble();
return Scaffold(
appBar: AppBar(
title: Text(result["title"]),
),
body: SingleChildScrollView(
child: SizedBox(
width: double.infinity,
height: 200.0,
child: Container(
child: Padding(
padding: const EdgeInsets.only(right: 10.0, left: 10.0, top: 24),
child: FlChart(
chart: LineChart(
LineChartData(
gridData: FlGridData(
show: false,
drawHorizontalGrid: false,
getDrawingVerticalGridLine: (value) {
return const FlLine(
color: Color(0xff37434d),
strokeWidth: 1,
);
},
getDrawingHorizontalGridLine: (value) {
return const FlLine(
color: Color(0xff37434d),
strokeWidth: 0,
);
},
),
titlesData: FlTitlesData(
show: true,
horizontalTitlesTextStyle:
TextStyle(color: Color(0xff000000), fontSize: 8),
getHorizontalTitles: (value) {
return "";
},
verticalTitlesTextStyle: TextStyle(
color: Color(0xff000000),
fontSize: 8,
),
getVerticalTitles: (value) {
return "";
},
verticalTitlesReservedWidth: 25,
verticalTitleMargin: 8,
horizontalTitleMargin: 8,
),
borderData: FlBorderData(show: false),
minX: 0,
maxX: totalPrices,
minY: 0,
maxY: maxPrice,
lineBarsData: [
LineChartBarData(
spots: prices,
isCurved: true,
colors: gradientColors,
barWidth: 1.5,
isStrokeCapRound: false,
dotData: FlDotData(
show: false,
dotColor: Colors.black.withOpacity(0.2),
),
belowBarData: BelowBarData(
show: true,
colors: gradientColors
.map((color) => color.withOpacity(0.3))
.toList(),
),
),
],
lineTouchData: LineTouchData(
touchTooltipData: TouchTooltipData(
tooltipBgColor: Colors.white.withOpacity(0.8),
))),
),
),
),
),
),
),
);
}
}
{ "status": true, "title": "Destination Success: Discovering the Entrepreneurial Journey:Amazon:Kindle Store", "store": "Amazon", "myData": "1507633169:64.72,1510191470:64.72,1513258319:64.72,1514037780:64.72,1515516055:64.72,1516978145:64.72,1518226927:64.72,1519370596:64.72,1520566714:64.15,1527515383:67.33,1529294384:78.76,1534952637:81.69,1538572111:81.67,1550820561:73.93,1552158657:73.54,1552714165:73.54,1555313399:71.89,1555856888:71.89,1556240207:71.89,1556811021:71.89,1557485399:72.15,1558860933:72.42,1561360193:72.26,1562529376:71.13", "avg_price": "70", "low_price": "64", "curr_price": "71", "productUrl": "https:\/\/www.amazon.in\/Destination-Success-Discovering-Entrepreneurial-Journey-ebook\/dp\/B07499SX9S\/", "drop_chance": "42" }
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