When using line charts, stuttering and crashing occurs

return annualTrendReport;
}
}

//view.dart
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:shared_account_app/src/views/read/folder/a.viewmodel.dart';
import 'package:fl_chart/fl_chart.dart';

class AView extends StatefulWidget {
const AView({super.key});

@override
State createState() => _AViewState();
}

class _AViewState extends State {
DateTime startDate = DateTime.now();
DateTime endDate = DateTime.now();

@override
void initState() {
super.initState();
WidgetsBinding.instance.addPostFrameCallback((timeStamp) {
_initializeDates();
_loadInitialData();
});
}

void _initializeDates() {
final now = DateTime.now();
startDate = DateTime(now.year, now.month, 1);
endDate = DateTime(now.year, now.month + 1, 0);
}

Future _loadInitialData() async {
final aViewModel = Provider.of(context, listen: false);
aViewModel.cleanReportViewDatas();
await aViewModel.getAnnualTrendReportDatas(startDate, endDate);
}

List gradientColors = [
Colors.brown,
Colors.black,
];

bool showAvg = false;

List spots = [];
double minY = 0;
double maxY = 0;

void _updateChartData(List> annualTrendItems,
double maxAmount, double minAmount) {
print(annualTrendItems);
spots.clear();
double x = 0;
minY = minAmount.toDouble();
maxY = maxAmount.toDouble();

spots = annualTrendItems.map((e) {
FlSpot spot = FlSpot(x, (e['amount']));
x++;
return spot;
}).toList();
}

@override
Widget build(BuildContext context) {
return Consumer(
builder: (context, aViewModel, child) {
return Stack(
children: [
AspectRatio(
aspectRatio: 1.5,
child: Padding(
padding: const EdgeInsets.only(
right: 18,
left: 12,
top: 24,
bottom: 12,
),
child: LineChart(
mainData(aViewModel),
),
),
),
SizedBox(
width: 60,
height: 34,
child: TextButton(
onPressed: () {
setState(() {
showAvg = !showAvg;
});
},
child: Text(
'avg',
style: TextStyle(
fontSize: 12,
color:
showAvg ? Colors.white.withOpacity(0.5) : Colors.white,
),
),
),
),
],
);
},
);
}

LineChartData mainData(AViewModel aViewModel) {
_updateChartData(
aViewModel.aTrendItems,
aViewModel.maxAmount,
aViewModel.minAmount,
);

return LineChartData(
gridData: FlGridData(
show: true,
drawVerticalLine: true,
horizontalInterval: 1,
verticalInterval: 1,
getDrawingHorizontalLine: (value) {
return const FlLine(
color: Colors.white,
strokeWidth: 1,
);
},
getDrawingVerticalLine: (value) {
return const FlLine(
color: Colors.purple,
strokeWidth: 1,
);
},
),
titlesData: const FlTitlesData(
show: true,
rightTitles: AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
topTitles: AxisTitles(
sideTitles: SideTitles(showTitles: false),
),
bottomTitles: AxisTitles(
sideTitles: SideTitles(
showTitles: false,
reservedSize: 30,
interval: 1,
),
),
leftTitles: AxisTitles(
sideTitles: SideTitles(
showTitles: false,
interval: 1,
reservedSize: 70,
),
),
),
borderData: FlBorderData(
show: false,
),
minX: 0,
maxX: spots.length.toDouble(),
minY: minY,
maxY: maxY,
lineBarsData: [
LineChartBarData(
spots: spots,
isCurved: true,
gradient: LinearGradient(
colors: gradientColors,
),
barWidth: 5,
isStrokeCapRound: true,
dotData: const FlDotData(
show: false,
),
belowBarData: BarAreaData(
show: false,
gradient: LinearGradient(
colors: gradientColors
.map((color) => color.withOpacity(0.1))
.toList(),
),
),
),
],
lineTouchData: LineTouchData(
enabled: false,
touchTooltipData: LineTouchTooltipData(
getTooltipColor: (spot) => Colors.white,
),
),
);
}
}

//a.viewmodel.dart
import 'package:flutter/material.dart';

import 'a.model.dart';
import 'a.service.dart';

class AViewModel extends ChangeNotifier {
final AService _aService = AService();

void cleanReportViewDatas() {
_aTrendItems.clear();
notifyListeners();
}

final List> _aTrendItems = [];

List> get aTrendItems => _aTrendItems;
double _maxAmount = 0;
double _minAmount = 0;
double get maxAmount => _maxAmount;
double get minAmount => _minAmount;

return {
'date': e.date.toString(),
'amount': amount,
};
}));
_maxAmount = _aTrendItems.last['amount'];
_minAmount = _aTrendItems.first['amount'];

notifyListeners();
}
}

```

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