Test for Flutter font selection

locale.dart

// A test for https://github.com/flutter/flutter/pull/17879

import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

void main() {
  runApp(new MaterialApp(
    localizationsDelegates: GlobalMaterialLocalizations.delegates,
    locale: const Locale("ja", "JP"),
    supportedLocales: [
      const Locale("ja", "JP"),
      const Locale("zh", "CN"),
      const Locale("zh", "TW"),
      const Locale("ko", "KR"),
      const Locale("vi", "VN"),
    ],
    home: new FooPage(),
  ));
}

class FooPage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return new FooPageState();
  }
}

class FooPageState extends State<FooPage> {
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(title: new Text("Locale test")),
      body: new Center(
        child: new Column(
          children: <Widget>[
            _buildRow(context, const Locale("ja", "JP")),
            _buildRow(context, const Locale("zh", "CN")),
            _buildRow(context, const Locale("zh", "TW")),
            _buildRow(context, const Locale("ko", "KR")),
            _buildRow(context, const Locale("vi", "VN")),
          ],
        ),
      ),
    );
  }
  
  Widget _buildRow(BuildContext context, Locale locale) {
    return new Container(
      padding: const EdgeInsets.all(8.0),
      child: new Localizations.override(
        context: context,
        locale: locale,
        child: new Text("${locale}: 累令直刃漢"),
      ),
    );
  }
}

on Galaxy S7 edge (Android 7.0):

All texts are in Japanese font.

I changed the language of the device to Chinese and tested it, but it is the same result.