Overflow error in date picker in flutter? - date

Question

I am using the date picker but it's showing a strange overflow text-overflow error.
I know the date picker uses the app Theme to style. But don't know which Theme property is used to style what in the dialogue box.
my Date picker:-
showDatePicker(
ontext: context,
initialDate: DateTime.now(),
firstDate: DateTime.now(),
astDate: DateTime.utc(2100, DateTime.now().month, DateTime.now().day),
);
my App Theme:-
ThemeData(
primaryColor: Color(0xffE6F5F1),
accentColor: Color(0xFF4EB799),
visualDensity: VisualDensity.adaptivePlatformDensity,
scaffoldBackgroundColor: Colors.white,
textTheme: TextTheme(
headline2: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 96,
letterSpacing: -1.5,
fontFamily: "Muli",
),
headline3: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 60,
letterSpacing: -0.5,
fontFamily: "Muli",
),
headline4: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 48,
letterSpacing: 0,
fontFamily: "Muli",
),
headline5: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 34,
letterSpacing: 0.25,
fontFamily: "Muli",
),
subtitle1: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 24,
letterSpacing: 0,
fontFamily: "Muli",
),
headline6: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 20,
letterSpacing: 0.15,
fontFamily: "Muli",
),
subtitle2: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 18,
letterSpacing: 0.15,
fontFamily: "Muli",
),
bodyText2: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 16,
letterSpacing: 0.5,
fontFamily: "Muli",
),
bodyText1: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 14,
letterSpacing: 0.25,
fontFamily: "Muli",
),
button: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 14,
letterSpacing: 1.25,
fontFamily: "Muli",
),
caption: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 12,
letterSpacing: 0.4,
fontFamily: "Muli",
),
overline: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 10,
letterSpacing: 1.5,
fontFamily: "Muli",
),
),
);
What is wrong here, which theme property to style what in Date picker in flutter?

Answer 1

In source code date_picker_dialog.dart
landscape mode use headline5
portrait mode use headline4
final TextStyle dateStyle = orientation == Orientation.landscape
? textTheme.headline5?.copyWith(color: dateColor)
: textTheme.headline4?.copyWith(color: dateColor);
...
final Widget header = DatePickerHeader(
helpText: widget.helpText ?? localizations.datePickerHelpText,
titleText: dateText,
titleStyle: dateStyle,
orientation: orientation,
isShort: orientation == Orientation.landscape,
icon: entryModeIcon,
iconTooltip: entryModeTooltip,
onIconPressed: _handleEntryModeToggle,
);
working demo
full code reduce headline4 font size
import 'package:flutter/material.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primaryColor: Color(0xffE6F5F1),
accentColor: Color(0xFF4EB799),
visualDensity: VisualDensity.adaptivePlatformDensity,
scaffoldBackgroundColor: Colors.white,
textTheme: TextTheme(
headline2: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 96,
letterSpacing: -1.5,
fontFamily: "Muli",
),
headline3: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 60,
letterSpacing: -0.5,
fontFamily: "Muli",
),
headline4: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 30,
letterSpacing: 0,
fontFamily: "Muli",
),
headline5: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 34,
letterSpacing: 0.25,
fontFamily: "Muli",
),
subtitle1: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 24,
letterSpacing: 0,
fontFamily: "Muli",
),
headline6: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 20,
letterSpacing: 0.15,
fontFamily: "Muli",
),
subtitle2: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 18,
letterSpacing: 0.15,
fontFamily: "Muli",
),
bodyText2: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 16,
letterSpacing: 0.5,
fontFamily: "Muli",
),
bodyText1: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 14,
letterSpacing: 0.25,
fontFamily: "Muli",
),
button: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 14,
letterSpacing: 1.25,
fontFamily: "Muli",
),
caption: const TextStyle(
fontWeight: FontWeight.w400,
fontSize: 12,
letterSpacing: 0.4,
fontFamily: "Muli",
),
overline: const TextStyle(
fontWeight: FontWeight.w500,
fontSize: 10,
letterSpacing: 1.5,
fontFamily: "Muli",
),
),
),
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;
void _incrementCounter() {
showDatePicker(
context: context,
initialDate: DateTime.now(),
firstDate: DateTime.now(),
lastDate: DateTime.utc(2100, DateTime.now().month, DateTime.now().day),
);
setState(() {
_counter++;
});
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text(widget.title),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
Text(
'$_counter',
style: Theme.of(context).textTheme.headline4,
),
],
),
),
floatingActionButton: FloatingActionButton(
onPressed: _incrementCounter,
tooltip: 'Increment',
child: Icon(Icons.add),
),
);
}
}