CODEWITHSUNDEEP
fluttertimecalculation
TimeToCode
TimeToCode

Reputation: 1848

Flutter: how to calculate total working hours by using time in and time out

I am creating an app where user can time in and time out, i want to add the functionality of calculating the total working hours. for example if time in value is 10:30 and time out value is 12:30 then total working hours should be 2.

please help how i can do this.

Update:




  final DateTime checkInTime = DateTime.now().subtract(Duration(hours: 9, minutes: 10));
  final DateTime checkOutTime = DateTime.now().subtract(Duration(hours: 5, minutes: 10));
  
  final hours = checkOutTime.difference(checkInTime).inHours;
  final minutes= checkOutTime.difference(checkInTime).inMinutes;
  final totalWorkingHours = '$hours.${(minutes - (hours*60))} hrs';
  print("hours  "+totalWorkingHours);  //output 4.0 hrs

it gives me 4 workinghours but it should have 6:0

Upvotes: 0

Views: 1458

Answers (2)

Mohan Sai Manthri
Mohan Sai Manthri

Reputation: 3179

You can do that like this

void main() {
  final DateTime checkInTime = DateTime.now().subtract(Duration(hours: 3));
  final DateTime checkOutTime = DateTime.now();
  
  final totalWorkingHours = checkOutTime.difference(checkInTime).inHours;
  print(totalWorkingHours);
}

Output will be 3

The above code only handle the hours, but if you want to handle both hrs and minutes then use the below code

void main() {
  final DateTime checkInTime = DateTime.now().subtract(Duration(hours: 3, minutes: 30));
  final DateTime checkOutTime = DateTime.now();
  
  final hours = checkOutTime.difference(checkInTime).inHours;
  final minutes= checkOutTime.difference(checkInTime).inMinutes;
  final totalWorkingHours = '$hours.${(minutes - (hours*60))} hrs';
  print(totalWorkingHours);
}

Output will be 3.30 hrs

Upvotes: 1

sid
sid

Reputation: 437

You can do it with simple math i.e

time out - time in = total working hours

Let's break down how to solve this in flutter

  1. First save the timestamp when user is In in DateTime i.e DateTime.now()
  2. Repeat step 1 for the Out
  3. Now if both are not null calculate the difference

code will look like

DateTime inTime = populateYourInTimeHere();
DateTime outTime =  poupulateYourOutTimeHere();

Duration workingHours = outTime.difference(inTime);// main part you need to know

format(Duration d) => d.toString().split('.').first.padLeft(8, "0");



 
The total working hour is format(workingHours)

Upvotes: 1

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