Unable to update values in Flutter using setState - flutter

Question

I have a list named activityList mapped to ActivityDataModel class and I have been using Provider flutter package to receive all values from firestore. I have also have been using a DatePicker package to select dates.
So, when I press on a date and the date is changed, I want to show the total activity data for the day.
In onDateChange of the DatePicker, I use forEach loop to cycle through the list items and extract each value and then compute the total value. ie. each list item has "coins" variable and then use "totalCoins" variable to store total number of coins, after cycling through each "coins" variable in the list item.
But the totalCoins or any total...variable does not seem to be updating for some reason. I used setState to update the values in the UI but that does not seem to work.
ActivityDataModel class
class ActivityDataModel {
int score, coins, time, calories;
String dateTime;
ActivityDataModel(
{required this.score,
required this.coins,
required this.calories,
required this.time,
required this.dateTime});
}
MainActivity.dart
class ActivityHome extends StatefulWidget {
const ActivityHome({Key? key}) : super(key: key);
static const routeName = "/activityhome";
#override
State<ActivityHome> createState() => _ActivityHomeState();
}
class _ActivityHomeState extends State<ActivityHome> {
DateTime selectedDate = DateTime.now();
int coins = 0, score = 0, calories = 0;
double time = 0.0;
int totalCoins = 0, totalScore = 0, totalCalories = 0;
double totalTime = 0.0;
#override
Widget build(BuildContext context) {
final user = Provider.of<UserModel?>(context, listen: true);
List<ActivityDataModel?>? activityList =
Provider.of<List<ActivityDataModel?>?>(context, listen: true);
// print(activityList?.elementAt(2)?.coins.toString());
return Scaffold(
appBar: AppBar(
iconTheme: const IconThemeData(
color: Colors.black, //change your color here
),
backgroundColor: Colors.white,
elevation: 0.0,
centerTitle: true,
title: Text(
"Activity",
style: TextStyle(
fontSize: 25.sp,
color: Colors.black,
fontWeight: FontWeight.bold),
),
),
body: Padding(
padding: EdgeInsets.all(20.0.r),
child: Column(
children: [
DatePicker(
DateTime(2022, 9, 9, 0, 0,
0), //DateTime.now(), // replace with Joining date
height: 100,
width: 80,
initialSelectedDate:
DateTime(2022, 9, 9, 0, 0, 0), //DateTime.now(),
selectionColor: Colors.blueAccent,
daysCount: 10,
onDateChange: (date) {
selectedDate = date;
DateFormat dateFormat = DateFormat("MM-dd-yyyy HH:mm:ss");
activityList?.forEach((activityData) {
DateTime activityDate =
dateFormat.parse(activityData?.dateTime ?? "0");
if (activityDate.day == selectedDate.day) {
print("true");
print(activityDate.day);
print(selectedDate.day);
coins = activityData!.coins;
calories = activityData.calories;
score = activityData.score;
time = (activityData.time / 60);
setState(() {
totalCoins += coins;
totalCalories += calories;
totalScore += score;
totalTime += time;
});
} else {
setState(() {
totalCoins = 0;
totalScore = 0;
totalCalories = 0;
totalTime = 0;
});
}
});
setState(() {});
print(totalCoins);
print(totalCalories);
print(totalScore);
print(totalTime);
},
),
VerticalSpace(10.h),
const Divider(
height: 1,
thickness: 0.3,
color: Colors.black,
),
VerticalSpace(10.h),
ActivityCardWidget(
coins: totalCoins.toString(),
time: totalTime.toStringAsFixed(1),
calories: totalCalories.toString(),
score: totalScore.toString(),
),
],
),
),
);
}
}
The correct o/p only shows for one date and the rest shows zero.