如何更改CupertinoDatePicker显示语言? [英] How to change CupertinoDatePicker display language?
问题描述
我正在关注Flutter文档,以显示CupertinoDatePicker.但是语言总是英语.请告诉我如何更改此设置.
I'm follow Flutter docs to show CupertinoDatePicker. But language alway is English. Please show me how to change this.
这是我的代码:
void _showDatePicker(BuildContext context, bool isYou) {
showModalBottomSheet(
context: context,
builder: (context) {
return CupertinoDatePicker(
onDateTimeChanged: (DateTime value) {
setState(() {
if (isYou) {
_dateOfBirth = value;
} else {
_dateOfBirthAnother = value;
}
});
},
initialDateTime: DateTime.now(),
mode: CupertinoDatePickerMode.date,
maximumYear: 2018,
minimumYear: 1950,
);
});
}
推荐答案
将所需的语言添加到MaterialApp(或CupertinoApp)配置中. 像这样:
Add your required languages to your MaterialApp (or CupertinoApp) configuration. Like this:
return MaterialApp(
localizationsDelegates: [
// ... app-specific localization delegate[s] here
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
DefaultCupertinoLocalizations.delegate,
],
supportedLocales: [
const Locale('en', 'US'), // English
const Locale('de', 'DE'), // German
// ... other locales the app supports
], <the rest of your configuration> );
这应该做到.
不要忘记导入:
import 'package:toothscout/GermanCupertinoLocalizations.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
而且,库比蒂诺(Cupertino)窗口小部件尚未完全本地化. 但是您可以编写自己的本地化配置类,并将其添加到我的代码中"DefaultCupertinoLocalizations.delegate"行的下方.
Also, Cupertino Widgets are not fully localized (yet). But you can write your own localization configuration classes and add them below the line "DefaultCupertinoLocalizations.delegate" in my code.
例如,为使用德语的CupertinoDatePicker必须创建的自定义德语本地化看起来像这样:
For example, my custom german localization that i had to create to use CupertinoDatePicker in german language looks like this:
import 'dart:async';
import 'package:flutter/cupertino.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
class _CupertinoLocalizationsDelegate extends LocalizationsDelegate<CupertinoLocalizations> {
const _CupertinoLocalizationsDelegate();
@override
bool isSupported(Locale locale) => locale.languageCode == 'de';
@override
Future<CupertinoLocalizations> load(Locale locale) => GermanCupertinoLocalizations.load(locale);
@override
bool shouldReload(_CupertinoLocalizationsDelegate old) => false;
@override
String toString() => 'DefaultCupertinoLocalizations.delegate(de_DE)';
}
/// US English strings for the cupertino widgets.
class GermanCupertinoLocalizations implements CupertinoLocalizations {
/// Constructs an object that defines the cupertino widgets' localized strings
/// for US English (only).
///
/// [LocalizationsDelegate] implementations typically call the static [load]
/// function, rather than constructing this class directly.
const GermanCupertinoLocalizations();
static const List<String> _shortWeekdays = <String>[
'Mo',
'Di',
'Mi',
'Do',
'Fr',
'Sa',
'So',
];
static const List<String> _shortMonths = <String>[
'Jan',
'Feb',
'Mär',
'Apr',
'Mai',
'Jun',
'Jul',
'Aug',
'Sep',
'Okt',
'Nov',
'Dez',
];
static const List<String> _months = <String>[
'Januar',
'Februar',
'März',
'April',
'Mai',
'Juni',
'Juli',
'August',
'September',
'Oktober',
'November',
'Dezember',
];
@override
String datePickerYear(int yearIndex) => yearIndex.toString();
@override
String datePickerMonth(int monthIndex) => _months[monthIndex - 1];
@override
String datePickerDayOfMonth(int dayIndex) => dayIndex.toString();
@override
String datePickerHour(int hour) => hour.toString();
@override
String datePickerHourSemanticsLabel(int hour) => hour.toString() + " Uhr";
@override
String datePickerMinute(int minute) => minute.toString().padLeft(2, '0');
@override
String datePickerMinuteSemanticsLabel(int minute) {
if (minute == 1)
return '1 Minute';
return minute.toString() + ' Minuten';
}
@override
String datePickerMediumDate(DateTime date) {
return '${_shortWeekdays[date.weekday - DateTime.monday]} '
'${_shortMonths[date.month - DateTime.january]} '
'${date.day.toString().padRight(2)}';
}
@override
DatePickerDateOrder get datePickerDateOrder => DatePickerDateOrder.mdy;
@override
DatePickerDateTimeOrder get datePickerDateTimeOrder => DatePickerDateTimeOrder.date_time_dayPeriod;
@override
String get anteMeridiemAbbreviation => 'AM';
@override
String get postMeridiemAbbreviation => 'PM';
@override
String get alertDialogLabel => 'Info';
@override
String timerPickerHour(int hour) => hour.toString();
@override
String timerPickerMinute(int minute) => minute.toString();
@override
String timerPickerSecond(int second) => second.toString();
@override
String timerPickerHourLabel(int hour) => hour == 1 ? 'Stunde' : 'Stunden';
@override
String timerPickerMinuteLabel(int minute) => 'Min';
@override
String timerPickerSecondLabel(int second) => 'Sek';
@override
String get cutButtonLabel => 'Ausschneiden';
@override
String get copyButtonLabel => 'Kopieren';
@override
String get pasteButtonLabel => 'Einfügen';
@override
String get selectAllButtonLabel => 'Alles auswählen';
/// Creates an object that provides US English resource values for the
/// cupertino library widgets.
///
/// The [locale] parameter is ignored.
///
/// This method is typically used to create a [LocalizationsDelegate].
static Future<CupertinoLocalizations> load(Locale locale) {
return SynchronousFuture<CupertinoLocalizations>(const GermanCupertinoLocalizations());
}
/// A [LocalizationsDelegate] that uses [DefaultCupertinoLocalizations.load]
/// to create an instance of this class.
static const LocalizationsDelegate<CupertinoLocalizations> delegate = _CupertinoLocalizationsDelegate();
}
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