flutter 语音转文字（科大讯飞）

everyThing is a widget

先引入 web_socket_channel: ^1.0.14（别问，问就是websocket）

看代码：

import ‘dart:async’;
import ‘dart:convert’;
import ‘dart:io’;

import ‘package:flutter/widgets.dart’;
import ‘package:web_socket_channel/io.dart’;

/// 科大讯飞语音转文本
class AudioTextForKDXF extends StatefulWidget {
final String wsAddr; // 例如： ws://echo.websocket.org
final AudioTextController controller;
final double width;

AudioTextForKDXF({this.wsAddr, this.controller,this.width});

@override
State createState() {
return _AudioTextForKDXFState();
}
}

class _AudioTextForKDXFState extends State {
AudioTextController _controller;

@override
void initState() {
super.initState();
if (widget.controller != null) {
_controller = widget.controller;
} else {
_controller = AudioTextController();
}
_controller.wsAddr =