Flutter：文本到语音数组

Question

我有一个 Android 应用程序可以将文本转换为语音。数组中的每个 word/string 都是一个按钮，当被选中时它会转换为语音。我希望在 Flutter 中实现这一点。

private TextToSpeech tts;

GridView 网格；

String[] words = {

        "Flutter",
        "Dart",
        "React,
        "Java"
};


@Override

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    tts =new TextToSpeech(this, this);
    setContentView(R.layout.activity_main);
    grid = (GridView) findViewById(R.id.grid);

谁能在Dart/Flutter中提供解决方案？

谢谢。

Answer 1

您可能会发现 Flutter 的 tts 包很有用：

https://pub.dartlang.org/packages/tts

这是一个简单的例子

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

void main() {
  runApp(new Scaffold(
    body: new Center(
      child: new RaisedButton(
        onPressed: speak,
        child: new Text('Say Hello'),
      ),
    ),
  ));
}

speak() async {
  Tts.speak('Hello World');
}

虽然您可以在此处找到更多 in-depth 示例：

https://pub.dartlang.org/packages/tts#-example-tab-

至于将它们连接在一起：

Can anyone provide a solution in Dart/Flutter?

这是一个简单的示例，它使用列表为列表中的每个字符串呈现按钮以及对 speak 单词的 onPressed 操作：

@override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text("The App"),
      ),
      body: new Center(
        child: new Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: _buildWords(),
        ),
      ),
    );
  }

  List<String> words = ['hello', 'world', 'flutter', 'is', 'awesome'];

  List<Widget> _buildWords() {
    return words.map((String word) {
      return new RaisedButton(
        child: new Text(word),
        onPressed: () => Tts.speak(word),
      );
    }).toList();
  }

Answer 2

您不能使用 tts 包，因为它与 Dart 2.0 不兼容：

选择 "flutter_tts " 因为它与 Dart 2.0 一起工作

https://pub.dartlang.org/packages/flutter_tts

     FlutterTts flutterTts = new FlutterTts();

     Future _speak() async{
        var result = await flutterTts.speak("Hello World");
        if (result == 1) setState(() => ttsState = TtsState.playing);
     }

     Future _stop() async{
       var result = await flutterTts.stop();
       if (result == 1) setState(() => ttsState = TtsState.stopped);
     }

     List<dynamic> languages = await flutterTts.getLanguages;

     await flutterTts.setLanguage("en-US");

     await flutterTts.setSpeechRate(1.0);

     await flutterTts.setVolume(1.0);

     await flutterTts.setPitch(1.0);

     await flutterTts.isLanguageAvailable("en-US");

Answer 3

''' 导入 'package:flutter_tts/flutter_tts.dart';'''

Future _speak(String text) async{
    var result = await flutterTts.speak(text);
    if (result == 1) setState(() => ttsState = TtsState.playing);
 }

'''如果您的列表很大，您可以调整持续时间'''

我使用的函数：

 Future.forEach (YOUR_LIST,(ITEM_IN_LIST) => 

 new Future.delayed(new Duration(seconds: 2), () {

 /// YOUR FUNCTION for speak

 _speak("$ITEM_IN_LIST");

 }).then(print)).then(print).catchError(print);

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