flutter_language_pickers

language_pickers

It's package for Dart and Flutter.

It makes language select pickers for you in Flutter. You can use it freely in lots of ways.

And specially thanks to Figen Güngör(@figengungor), who is opened the source code of 'country_pickers'. Lots of source codes are from country_pickers GitHub Repository, so works are very easy. Thanks again.

Upgrading from 0.3.x

0.4.0 does not break your code. The old API still works, it only warns you. Here is what to move to:

0.3.x	0.4.0
defaultLanguagesList (List<Map<String, String>>)	Languages.defaultLanguages (List<Language>)
languagesList: myMaps	languages: myLanguages
LanguagePickerUtils.getLanguageByIsoCode('ko')	Language.fromIsoCode('ko')
—	Languages.korean, Languages.english, …

One behaviour changed: an unknown ISO code now throws an ArgumentError instead of an Exception. ArgumentError is an Error, so on Exception catch no longer catches it.

Every Language also has a nativeName now, and Language implements == and hashCode, so you can put it in a Set or use it as a Map key.

Getting Started

LanguagePickerDropdown example

import 'package:language_pickers/language_pickers.dart';

Language _selectedDropdownLanguage = Language.fromIsoCode('ko');

// It's sample code of Dropdown Item.
// nativeName is the name written in the language itself, e.g. '한국어'.
Widget _buildDropdownItem(Language language) {
  return Row(
    children: <Widget>[
      SizedBox(
        width: 8.0,
      ),
      Text("${language.name} (${language.nativeName})"),
    ],
  );
}


// Builder
LanguagePickerDropdown(
                    initialValue: 'ko',
                    itemBuilder: _buildDropdownItem,
                    onValuePicked: (Language language) {
                      _selectedDropdownLanguage = language;
                      print(_selectedDropdownLanguage.name);
                      print(_selectedDropdownLanguage.isoCode);
                    },
                  ),

Narrowing the languages down

LanguagePickerDropdown(
  languages: const <Language>[
    Languages.korean,
    Languages.english,
    Languages.japanese,
  ],
),

LanguagePickerDropdownController example

The controller lets you read and change the selection from outside the picker.

final controller =
    LanguagePickerDropdownController(initialValue: Languages.korean);

@override
void dispose() {
  controller.dispose();
  super.dispose();
}

// Builder
LanguagePickerDropdown(controller: controller),

// Somewhere else
controller.selectIsoCode('ja');   // the dropdown follows
print(controller.value.name);     // reads the current selection

LanguagePickerDialog example

import 'package:language_pickers/language_pickers.dart';

Language _selectedDialogLanguage =
      Language.fromIsoCode('ko');

// It's sample code of Dialog Item.
Widget _buildDialogItem(Language language) => Row(
    children: <Widget>[
      Text(language.name),
      SizedBox(width: 8.0),
      Flexible(child: Text("(${language.isoCode})"))
    ],
  );

void _openLanguagePickerDialog() => showDialog(
    context: context,
    builder: (context) => Theme(
        data: Theme.of(context).copyWith(primaryColor: Colors.pink),
        child: LanguagePickerDialog(
            titlePadding: EdgeInsets.all(8.0),
            searchCursorColor: Colors.pinkAccent,
            searchInputDecoration: InputDecoration(hintText: 'Search...'),
            isSearchable: true,
            title: Text('Select your language'),
            onValuePicked: (Language language) => setState(() {
                  _selectedDialogLanguage = language;
                  print(_selectedDialogLanguage.name);
                  print(_selectedDialogLanguage.isoCode);
                }),
            itemBuilder: _buildDialogItem)),
  );

LanguagePickerCupertino example

import 'package:language_pickers/language_pickers.dart';

Language _selectedCupertinoLanguage = Language.fromIsoCode('ko');

// It's sample code of Cupertino Item.
void _openCupertinoLanguagePicker() => showCupertinoModalPopup<void>(
  context: context,
  builder: (BuildContext context) {
    return LanguagePickerCupertino(
      pickerSheetHeight: 200.0,
      onValuePicked: (Language language) => setState(() {
            _selectedCupertinoLanguage = language;
            print(_selectedCupertinoLanguage.name);
            print(_selectedCupertinoLanguage.isoCode);
          }),
    );
  });

Widget _buildCupertinoItem(Language language) => Row(
    children: <Widget>[
      Text("+${language.name}"),
      SizedBox(width: 8.0),
      Flexible(child: Text(language.name))
    ],
  );

Information

If a name or a native name is wrong, please make some issues on GitHub.

The names and the native names are based on the public ISO 639-1 code table. Where the table lists several native writings for one language, this package keeps one representative writing, so that it fits in a dropdown.

Credits

Developed by gomgom(GitHub @gomgom).