Flutter文本转语音插件text_to_speech_macos的使用
Flutter文本转语音插件text_to_speech_macos的使用
text_to_speech_macos 是 macOS 平台上 text_to_speech 插件的实现。
使用
添加依赖
此包已被认可，这意味着你只需在 pubspec.yaml 文件中添加 text_to_speech 作为依赖项。当你依赖 package:text_to_speech 时，它会自动包含在你的应用中。
这表示在你的 pubspec.yaml 文件中应该添加如下内容：
dependencies:
...
text_to_speech: <text_to_speech_version>
...
如果你只想使用 macOS 版本的包，可以添加 text_to_speech_macos 作为依赖项：
dependencies:
...
text_to_speech_macos: <text_to_speech_macos_version>
...
有关更多使用细节，请参阅 这里。
完整示例
以下是完整的示例代码，展示了如何在 Flutter 应用中使用 text_to_speech_macos 插件。
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'package:text_to_speech_platform_interface/text_to_speech_platform.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatefulWidget {
[@override](/user/override)
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final String defaultLanguage = 'en-US';
TextToSpeechPlatform tts = TextToSpeechPlatform.instance;
String text = '';
double volume = 1; // 范围：0-1
double rate = 1.0; // 范围：0-2
double pitch = 1.0; // 范围：0-2
String? language;
String? languageCode;
List<String> languages = [];
List<String> languageCodes = [];
String? voice;
TextEditingController textEditingController = TextEditingController();
[@override](/user/override)
void initState() {
super.initState();
textEditingController.text = text;
WidgetsBinding.instance?.addPostFrameCallback((_) {
initLanguages();
});
}
Future<void> initLanguages() async {
/// 填充语言代码（例如：en-US）
languageCodes = await tts.getLanguages();
/// 填充显示的语言（例如：English）
List<String>? displayLanguages = await tts.getDisplayLanguages();
if (displayLanguages == null) {
return;
}
languages.clear();
for (dynamic lang in displayLanguages) {
languages.add(lang as String);
}
/// 获取默认语言
final String? defaultLangCode = await tts.getDefaultLanguage();
if (defaultLangCode != null && languageCodes.contains(defaultLangCode)) {
languageCode = defaultLangCode;
} else {
languageCode = defaultLanguage;
}
language = await tts.getDisplayLanguageByCode(languageCode!);
/// 获取声音
voice = await getVoiceByLang(languageCode!);
if (mounted) {
setState(() {});
}
}
Future<String?> getVoiceByLang(String lang) async {
List<String>? voices = await tts.getVoiceByLang(languageCode!);
if (voices != null && voices.isNotEmpty) {
return voices.first;
}
return null;
}
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Text-to-Speech 示例'),
),
body: SingleChildScrollView(
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Center(
child: Column(
children: <Widget>[
TextField(
controller: textEditingController,
maxLines: 5,
decoration: InputDecoration(
border: OutlineInputBorder(),
hintText: '请输入一些文本...'),
onChanged: (String newText) {
setState(() {
text = newText;
});
},
),
Row(
children: <Widget>[
Text('音量'),
Expanded(
child: Slider(
value: volume,
min: 0,
max: 1,
label: volume.round().toString(),
onChanged: (double value) {
initLanguages();
setState(() {
volume = value;
});
},
),
),
Text('(${volume.toStringAsFixed(2)})'),
],
),
Row(
children: <Widget>[
Text('语速'),
Expanded(
child: Slider(
value: rate,
min: 0,
max: 2,
label: rate.round().toString(),
onChanged: (double value) {
setState(() {
rate = value;
});
},
),
),
Text('(${rate.toStringAsFixed(2)})'),
],
),
Row(
children: <Widget>[
Text('音调'),
Expanded(
child: Slider(
value: pitch,
min: 0,
max: 2,
label: pitch.round().toString(),
onChanged: (double value) {
setState(() {
pitch = value;
});
},
),
),
Text('(${pitch.toStringAsFixed(2)})'),
],
),
Row(
children: <Widget>[
Text('语言'),
SizedBox(
width: 20,
),
DropdownButton<String>(
value: language,
icon: const Icon(Icons.arrow_downward),
iconSize: 24,
elevation: 16,
style: const TextStyle(color: Colors.deepPurple),
underline: Container(
height: 2,
color: Colors.deepPurpleAccent,
),
onChanged: (String? newValue) async {
languageCode = await tts.getLanguageCodeByName(newValue!);
voice = await getVoiceByLang(languageCode!);
setState(() {
language = newValue;
});
},
items: languages
.map<DropdownMenuItem<String>>((String value) {
return DropdownMenuItem<String>(
value: value,
child: Text(value),
);
}).toList(),
),
],
),
SizedBox(
height: 20,
),
Row(
children: <Widget>[
Text('声音'),
SizedBox(
width: 20,
),
Text('${voice ?? '-'}'),
],
),
SizedBox(
height: 20,
),
Row(
children: <Widget>[
Expanded(
child: Container(
padding: EdgeInsets.only(right: 10),
child: ElevatedButton(
child: Text('停止'),
onPressed: () {
tts.stop();
},
),
),
),
if (supportPause)
Expanded(
child: Container(
padding: EdgeInsets.only(right: 10),
child: ElevatedButton(
child: Text('暂停'),
onPressed: () {
tts.pause();
},
),
),
),
if (supportResume)
Expanded(
child: Container(
padding: EdgeInsets.only(right: 10),
child: ElevatedButton(
child: Text('恢复'),
onPressed: () {
tts.resume();
},
),
),
),
Expanded(
child: Container(
child: ElevatedButton(
child: Text('播放'),
onPressed: () {
speak();
},
),
))
],
)
],
),
),
),
),
),
);
}
bool get supportPause => defaultTargetPlatform != TargetPlatform.android;
bool get supportResume => defaultTargetPlatform != TargetPlatform.android;
void speak() {
tts.setVolume(volume);
tts.setRate(rate);
if (languageCode != null) {
tts.setLanguage(languageCode!);
}
tts.setPitch(pitch);
tts.speak(text);
}
}
更多关于Flutter文本转语音插件text_to_speech_macos的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
