ifly_speech_recognition 0.0.2+1

ifly speech recognition package.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:flutter_easyloading/flutter_easyloading.dart';
import 'package:flutter_styled_toast/flutter_styled_toast.dart';
import 'package:ifly_speech_recognition/ifly_speech_recognition.dart';
import 'package:permission_handler/permission_handler.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
        visualDensity: VisualDensity.adaptivePlatformDensity,
      ),
      home: MyHomePage(),
      builder: EasyLoading.init(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key}) : super(key: key);

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  /// 语音识别
  SpeechRecognitionService _recognitionService = SpeechRecognitionService(
    appId: 'iflyAppId',
    appKey: 'iflyApiKey',
    appSecret: 'iflyApiSecret',
  );

  /// 麦克风是否授权
  bool _havePermission = false;

  /// 识别结果
  String _result;

  @override
  void initState() {
    super.initState();

    _checkPermission();
    _initRecorder();
  }

  /// 获取判断权限
  Future<bool> _checkPermission() async {
    final status = await Permission.microphone.status;
    if (status == PermissionStatus.undetermined) {
      // 未请求过，则请求权限
      PermissionStatus requestStatus = await Permission.microphone.request();
      return requestStatus == PermissionStatus.granted;
    } else if (status != PermissionStatus.granted) {
      return false;
    }
    return true;
  }

  /// 初始化语音转文字
  void _initRecorder() async {
    _havePermission = await _checkPermission();

    if (!_havePermission) {
      // 授权失败
      showToast('请开启麦克风权限');
      return;
    }

    // 初始化语音识别服务
    await _recognitionService.initRecorder();

    // 语音识别回调
    _recognitionService.onRecordResult().listen((String message) {
      EasyLoading.dismiss();
      setState(() {
        _result = message;
      });
    }, onError: (String err) {
      EasyLoading.dismiss();
      showToast(err);
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('语音听写'),
      ),
      body: Column(
        crossAxisAlignment: CrossAxisAlignment.center,
        children: <Widget>[
          Text(_result),
          ElevatedButton(
            onPressed: _startRecord,
            child: Text('开始录音'),
          ),
          ElevatedButton(
            onPressed: _stopRecord,
            child: Text('停止录音'),
          ),
        ],
      ),
    );
  }

  /// 开始录音
  void _startRecord() async {
    if (!_havePermission) {
      showToast('请开启麦克风权限');
      return;
    }

    final r = await _recognitionService.startRecord();
    print('开启录音: $r');
  }

  /// 结束录音
  void _stopRecord() async {
    final r = await _recognitionService.stopRecord();
    print('关闭录音: $r');

    // 识别语音
    EasyLoading.show(status: 'loading...');
    _recognitionService.speechRecognition();
  }
}