Convert DateTime into millisecondsSinceEpoch using DateTimeField in flutter - flutter

Question

I need to convert the user inputted time to milli seconds Since Epoch (millisecondsSinceEpoch). I was looking for a solution for this but I could found only millisecondsSinceEpoch to regular time. So here is my code. I tried to do this in this way. Anyone can help, I really appreciate it.
import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';
import 'package:intl/intl.dart';
import 'package:datetime_picker_formfield/datetime_picker_formfield.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
// This widget is the root of your application.
_timeDateConvertToMili createState() => _timeDateConvertToMili();
}
class _timeDateConvertToMili extends State<MyApp>{
final format = DateFormat("dd-MM-yyyy HH:mm");
final initialValue = DateTime.now();
bool autoValidate = false;
bool showResetIcon = true;
DateTime value = DateTime.now();
TextEditingController _startTimeController = TextEditingController();
TextEditingController _endTimeController = TextEditingController();
#override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
home: Scaffold(
body: Container(
child: Column(
children: [
SizedBox(height: 50,),
Container(
padding: EdgeInsets.all(5.0),
decoration: BoxDecoration(
border: Border(
// bottom: BorderSide(color: Colors.grey[100])
)),
child: DateTimeField(
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'Start Time',
labelStyle: TextStyle(color: Colors.black),
),
style: TextStyle(
color: Colors.black,
),
controller: _startTimeController,
format: format,
onShowPicker: (context, currentValue) async {
final date = await showDatePicker(
context: context,
firstDate: DateTime(2000),
initialDate: currentValue ?? DateTime.now(),
lastDate: DateTime(2100));
if (date != null) {
final time = await showTimePicker(
context: context,
initialTime:
TimeOfDay.fromDateTime(currentValue ?? DateTime.now()),
);
return DateTimeField.combine(date, time);
} else {
return currentValue;
}
},
resetIcon: showResetIcon ? Icon(Icons.delete) : null,
),
),
Container(
padding: EdgeInsets.all(5.0),
decoration: BoxDecoration(
border: Border(
// bottom: BorderSide(color: Colors.grey[100])
)),
child: DateTimeField(
decoration: InputDecoration(
border: OutlineInputBorder(),
labelText: 'End Time',
labelStyle: TextStyle(color: Colors.black),
),
style: TextStyle(
color: Colors.black,
),
controller: _endTimeController,
format: format,
onShowPicker: (context, currentValue) async {
final date = await showDatePicker(
context: context,
firstDate: DateTime(2000),
initialDate: currentValue ?? DateTime.now(),
lastDate: DateTime(2100));
if (date != null) {
final time = await showTimePicker(
context: context,
initialTime:
TimeOfDay.fromDateTime(currentValue ?? DateTime.now()),
);
return DateTimeField.combine(date, time);
} else {
return currentValue;
}
},
resetIcon: showResetIcon ? Icon(Icons.delete) : null,
),
),
Container(
child: RaisedButton(
onPressed: () {
convertNow();
},
child: Text('Convert to Epoch'),
),
),
Container(
child: Text('Result is :'
),
),
],
),
),
),
);
}
void convertNow() {
print ('inputted time is : $_startTimeController');
//var unix = DateTime.parse(_startTimeController.toString()).millisecondsSinceEpoch / 1000;
}
}
Thanks in advance

Answer 1

Here I got the result.
Change the time date format final format = DateFormat("yyyy-MM-dd HH:mm");
void convertNow() {
var inputedStartTime = DateTime.parse(startTimeController.text);
var mili = inputedStartTime.millisecondsSinceEpoch/1000;
var startTime = mili.toInt();
var inputedEndtTime = DateTime.parse(endTimeController.text);
var mili2 = inputedEndtTime.millisecondsSinceEpoch/1000;
var endTime = mili2.toInt();
<!--Result see on run / terminal-->
print ('Converted start time is $startTime');
print ('Converted end time is $endTime');
}