Flutter语音识别插件lepsi_rw_speech_recognizer的使用
Flutter语音识别插件lepsi_rw_speech_recognizer的使用
rw_speech_recognizer
Speech recognizer plugin for RealWear HMT-1(Z1)。
使用方法
RwSpeechRecognizer.setCommands(<String>[
'Full Boar',
'California Sunshine',
'Deadicated',
], (command) {
// 定义您的回调函数
});
完整示例代码
以下是一个完整的示例代码,展示了如何使用 lepsi_rw_speech_recognizer 插件来实现语音识别功能。
import 'package:flutter/material.dart';
import 'package:lepsi_rw_speech_recognizer_example/lepsi_rw_speech_recognizer_example.dart';
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
String? _speechCommand; // 存储识别到的语音命令
@override
void initState() {
super.initState();
// 设置可识别的命令,并定义回调函数
LepsiRwSpeechRecognizer.setCommands(<String>[
'Full Boar',
'California Sunshine',
'Deadicated',
], (command) {
setState(() {
_speechCommand = command; // 更新识别到的命令
});
});
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('RealWear HMT-1语音识别插件示例应用'),
),
body: Builder(builder: (BuildContext context) {
// 如果识别到命令,则弹出对话框显示结果
if (_speechCommand != null) {
WidgetsBinding.instance.addPostFrameCallback((_) {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
title: Text(''), // 空标题
content: Text('你说了: $_speechCommand'), // 显示识别到的命令
actions: <Widget>[
new TextButton(
child: const Text('确定'),
onPressed: () {
Navigator.of(context).pop(); // 关闭对话框
},
),
],
);
},
);
});
}
return Center(
child: const Text('请说 "Full Boar", "California Sunshine" 或 "Deadicated"'),
); // 提示用户说出指定的命令
}),
),
);
}
}
代码说明
-
导入必要的库:
import 'package:flutter/material.dart';导入 Flutter 的核心库。
-
初始化插件:
LepsiRwSpeechRecognizer.setCommands(<String>[ 'Full Boar', 'California Sunshine', 'Deadicated', ], (command) { setState(() { _speechCommand = command; }); });设置可识别的命令列表,并在识别到命令时触发回调函数,更新
_speechCommand。 -
构建 UI:
return MaterialApp( home: Scaffold( appBar: AppBar( title: const Text('RealWear HMT-1语音识别插件示例应用'), ), body: Builder(builder: (BuildContext context) { if (_speechCommand != null) { WidgetsBinding.instance.addPostFrameCallback((_) { showDialog( context: context, builder: (BuildContext context) { return AlertDialog( title: Text(''), content: Text('你说了: $_speechCommand'), actions: <Widget>[ new TextButton( child: const Text('确定'), onPressed: () { Navigator.of(context).pop(); }, ), ], ); }, ); }); } return Center( child: const Text('请说 "Full Boar", "California Sunshine" 或 "Deadicated"'), ); }), ), );
更多关于Flutter语音识别插件lepsi_rw_speech_recognizer的使用的实战教程也可以访问 https://www.itying.com/category-92-b0.html
更多关于Flutter语音识别插件lepsi_rw_speech_recognizer的使用的实战系列教程也可以访问 https://www.itying.com/category-92-b0.html
lepsi_rw_speech_recognizer 是一个用于 Flutter 的语音识别插件,它允许你在 Flutter 应用中集成语音识别功能。以下是如何使用这个插件的基本步骤:
1. 添加依赖
首先,你需要在 pubspec.yaml 文件中添加 lepsi_rw_speech_recognizer 插件的依赖:
dependencies:
flutter:
sdk: flutter
lepsi_rw_speech_recognizer: ^1.0.0 # 请使用最新版本
然后运行 flutter pub get 来获取依赖。
2. 导入插件
在你的 Dart 文件中导入插件:
import 'package:lepsi_rw_speech_recognizer/lepsi_rw_speech_recognizer.dart';
3. 初始化语音识别器
你可以通过调用 LepsiRwSpeechRecognizer 的静态方法来初始化语音识别器:
final speechRecognizer = LepsiRwSpeechRecognizer();
4. 请求权限
在开始语音识别之前,你需要请求用户授予麦克风权限。你可以使用 permission_handler 插件来请求权限:
import 'package:permission_handler/permission_handler.dart';
Future<void> requestPermissions() async {
var status = await Permission.microphone.status;
if (!status.isGranted) {
await Permission.microphone.request();
}
}
5. 开始语音识别
你可以通过调用 startListening 方法来开始语音识别:
void startListening() async {
await requestPermissions();
speechRecognizer.startListening(
onResult: (String result) {
print("识别结果: $result");
},
onError: (String error) {
print("识别错误: $error");
},
);
}
6. 停止语音识别
你可以通过调用 stopListening 方法来停止语音识别:
void stopListening() {
speechRecognizer.stopListening();
}
7. 处理识别结果
在 startListening 方法中,你可以通过 onResult 回调来处理识别结果:
speechRecognizer.startListening(
onResult: (String result) {
print("识别结果: $result");
// 在这里处理识别结果
},
onError: (String error) {
print("识别错误: $error");
},
);
8. 释放资源
当不再需要语音识别器时,你可以释放资源:
void dispose() {
speechRecognizer.dispose();
}
完整示例
以下是一个完整的示例,展示了如何使用 lepsi_rw_speech_recognizer 插件进行语音识别:
import 'package:flutter/material.dart';
import 'package:lepsi_rw_speech_recognizer/lepsi_rw_speech_recognizer.dart';
import 'package:permission_handler/permission_handler.dart';
void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
[@override](/user/override)
Widget build(BuildContext context) {
return MaterialApp(
home: SpeechRecognitionScreen(),
);
}
}
class SpeechRecognitionScreen extends StatefulWidget {
[@override](/user/override)
_SpeechRecognitionScreenState createState() => _SpeechRecognitionScreenState();
}
class _SpeechRecognitionScreenState extends State<SpeechRecognitionScreen> {
final speechRecognizer = LepsiRwSpeechRecognizer();
String recognizedText = "点击按钮开始语音识别";
Future<void> requestPermissions() async {
var status = await Permission.microphone.status;
if (!status.isGranted) {
await Permission.microphone.request();
}
}
void startListening() async {
await requestPermissions();
speechRecognizer.startListening(
onResult: (String result) {
setState(() {
recognizedText = result;
});
},
onError: (String error) {
setState(() {
recognizedText = "识别错误: $error";
});
},
);
}
void stopListening() {
speechRecognizer.stopListening();
}
[@override](/user/override)
void dispose() {
speechRecognizer.dispose();
super.dispose();
}
[@override](/user/override)
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('语音识别示例'),
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(recognizedText),
SizedBox(height: 20),
ElevatedButton(
onPressed: startListening,
child: Text('开始识别'),
),
SizedBox(height: 20),
ElevatedButton(
onPressed: stopListening,
child: Text('停止识别'),
),
],
),
),
);
}
}

