Get Time Picker's Value within a Widget - flutter

Question

I am trying to get the DateTime that is chosen from the user and save it within an object.
This is implemented within the following construction:
return Scaffold(
appBar: AppBar(
title: Text('Add/Edit Shift'),
),
body: Container(
color: Colors.white,
margin: EdgeInsets.all(16.0),
child: Form(
key: _formKey,
child: SingleChildScrollView(
child: Column(
// crossAxisAlignment: CrossAxisAlignment.center,
// mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
height: 40.0,
decoration:
BoxDecoration(borderRadius: BorderRadius.circular(5.0)),
alignment: Alignment.center,
width: MediaQuery.of(context).size.width,
child: Text(
'Scheduling Date: ${_dateformat.format(widget.shiftDate)}',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 19.0,
color: Colors.teal,
),
),
),
// fixme: how to get the clicked value from the user?
// the value has to get saved within an object that will be returned
MyTimePicker(_startOfShift),
MyTimePicker(_endOfShift),
RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5.0),
),
child: Text(
"Submit",
style: TextStyle(
color: Colors.teal,
fontSize: 18.0,
fontWeight: FontWeight.bold),
),
onPressed: () {
// todo: return the shift to the calendar
// print(MyTimePicker(_startOfShift).chosenTime);
Navigator.pop(
context,
);
},
)
],
),
),
),
),
);
And this is how it looks like:
The MyTimePickerClass is created as a separate Dart file. Within the MyTimePicker class, I construct a RaisedButton labeled as Start and End where the user is capable to choose the wanting time.
import 'package:flutter/material.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
class MyTimePicker extends StatefulWidget {
String typeOfShift;
MyTimePicker(this.typeOfShift);
#override
_MyTimePickerState createState() => _MyTimePickerState();
}
class _MyTimePickerState extends State<MyTimePicker> {
#override
Widget build(BuildContext context) {
return RaisedButton(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(5.0)),
elevation: 4.0,
onPressed: () {
DateTime test = _MyDatePicker(context);
widget.typeOfShift = test.toString();
setState(() {});
},
child: Container(
alignment: Alignment.center,
height: 50.0,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Row(
children: <Widget>[
Container(
child: Row(
children: <Widget>[
Icon(
Icons.access_time,
size: 18.0,
color: Colors.teal,
),
Text(
" ${widget.typeOfShift}",
style: TextStyle(
color: Colors.teal,
fontWeight: FontWeight.bold,
fontSize: 18.0),
),
],
),
)
],
),
Text(
" Change",
style: TextStyle(
color: Colors.teal,
fontWeight: FontWeight.bold,
fontSize: 18.0),
),
],
),
),
color: Colors.white,
);
}
DateTime _MyDatePicker(BuildContext context) {
DateTime _myDateTime;
DatePicker.showTimePicker(context,
showSecondsColumn: false,
theme: DatePickerTheme(
containerHeight: 210.0,
),
showTitleActions: true, onConfirm: (time) {
// _chosenTime = time;
_myDateTime = time;
print('confirm $time');
// widget.typeOfShift = '${time.hour} : ${time.minute}';
setState(() {});
}, currentTime: DateTime.now(), locale: LocaleType.de);
return _myDateTime;
}
}
Then the time is displayed in the UI. How could I access this time??

Answer 1

You can copy paste run full code below
You can define two MyTimePicker and use it
When onPressed , you can use startPicker.typeOfShift to get String
MyTimePicker startPicker = MyTimePicker("Start");
MyTimePicker endPicker = MyTimePicker("End");
...
startPicker,
endPicker,
RaisedButton(
...
onPressed: () {
print(startPicker.typeOfShift);
print(endPicker.typeOfShift);
output
I/flutter (31204): 1 : 23
I/flutter (31204): 1 : 25
working demo
full code
import 'package:flutter/material.dart';
import 'package:flutter_datetime_picker/flutter_datetime_picker.dart';
class MyTimePicker extends StatefulWidget {
String typeOfShift;
MyTimePicker(this.typeOfShift);
#override
_MyTimePickerState createState() => _MyTimePickerState();
}
class _MyTimePickerState extends State<MyTimePicker> {
#override
Widget build(BuildContext context) {
return RaisedButton(
shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(5.0)),
elevation: 4.0,
onPressed: () {
DateTime test = _MyDatePicker(context);
widget.typeOfShift = test.toString();
setState(() {});
},
child: Container(
alignment: Alignment.center,
height: 50.0,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
Row(
children: <Widget>[
Container(
child: Row(
children: <Widget>[
Icon(
Icons.access_time,
size: 18.0,
color: Colors.teal,
),
Text(
" ${widget.typeOfShift}",
style: TextStyle(
color: Colors.teal,
fontWeight: FontWeight.bold,
fontSize: 18.0),
),
],
),
)
],
),
Text(
" Change",
style: TextStyle(
color: Colors.teal,
fontWeight: FontWeight.bold,
fontSize: 18.0),
),
],
),
),
color: Colors.white,
);
}
DateTime _MyDatePicker(BuildContext context) {
DateTime _myDateTime;
DatePicker.showTimePicker(context,
showSecondsColumn: false,
theme: DatePickerTheme(
containerHeight: 210.0,
),
showTitleActions: true, onConfirm: (time) {
// _chosenTime = time;
_myDateTime = time;
print('confirm $time');
widget.typeOfShift = '${time.hour} : ${time.minute}';
setState(() {});
}, currentTime: DateTime.now(), locale: LocaleType.de);
return _myDateTime;
}
}
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
#override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
int _counter = 0;
MyTimePicker startPicker = MyTimePicker("Start");
MyTimePicker endPicker = MyTimePicker("End");
void _incrementCounter() {
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Add/Edit Shift'),
),
body: Container(
color: Colors.white,
margin: EdgeInsets.all(16.0),
child: Form(
//key: _formKey,
child: SingleChildScrollView(
child: Column(
// crossAxisAlignment: CrossAxisAlignment.center,
// mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Container(
height: 40.0,
decoration:
BoxDecoration(borderRadius: BorderRadius.circular(5.0)),
alignment: Alignment.center,
width: MediaQuery.of(context).size.width,
child: Text(
'Scheduling Date: ',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 19.0,
color: Colors.teal,
),
),
),
// fixme: how to get the clicked value from the user?
// the value has to get saved within an object that will be returned
startPicker,
endPicker,
RaisedButton(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(5.0),
),
child: Text(
"Submit",
style: TextStyle(
color: Colors.teal,
fontSize: 18.0,
fontWeight: FontWeight.bold),
),
onPressed: () {
print(startPicker.typeOfShift);
print(endPicker.typeOfShift);
// todo: return the shift to the calendar
// print(MyTimePicker(_startOfShift).chosenTime);
Navigator.pop(
context,
);
},
)
],
),
),
),
),
);
}
}