详解Android studio实现语音转文字功能

    <!--连接网络权限，用于执行云端语音能力 -->
    <uses-permission android:name="android.permission.INTERNET"/>
    <!--获取手机录音机使用权限，听写、识别、语义理解需要用到此权限 -->
    <uses-permission android:name="android.permission.RECORD_AUDIO"/>
    <uses-permission android:name="Manifest.permission.RECORD_AUDIO" />
    <!--读取网络信息状态 -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <!--获取当前wifi状态 -->
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <!--允许程序改变网络连接状态 -->
    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
    <!--读取手机信息权限 -->
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <!--读取联系人权限，上传联系人需要用到此权限 -->
    <uses-permission android:name="android.permission.READ_CONTACTS"/>
    <!--外存储写权限，构建语法需要用到此权限 -->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <!--外存储读权限，构建语法需要用到此权限 -->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
    <!--配置权限，用来记录应用配置信息 -->
    <uses-permission android:name="android.permission.WRITE_SETTINGS"
        tools:ignore="ProtectedPermissions" />
    <!--手机定位信息，用来为语义等功能提供定位，提供更精准的服务-->
    <!--定位信息是敏感信息，可通过Setting.setLocationEnable(false)关闭定位请求 -->
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <!--如需使用人脸识别，还要添加：摄像头权限，拍照需要用到 -->
    <uses-permission android:name="android.permission.CAMERA" />

sourceSets {
        main {
            jniLibs.srcDirs = ['libs']
        }
    }

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/btn_click"
        android:text="点击打开讯飞语音识别"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        />
    <EditText
        android:id="@+id/result"
        android:layout_below="@id/btn_click"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="此处显示你所录下的内容"
        />
</LinearLayout>

package com.example.myapplication;
import com.iflytek.cloud.RecognizerResult;

public interface XunFeiCallbackListener {
    void onFinish(RecognizerResult results);
}

package com.example.myapplication;
import android.content.Context;
        import android.widget.Toast;
        import com.iflytek.cloud.RecognizerResult;
        import com.iflytek.cloud.SpeechConstant;
        import com.iflytek.cloud.SpeechError;
        import com.iflytek.cloud.SpeechUtility;
        import com.iflytek.cloud.ui.RecognizerDialog;
        import com.iflytek.cloud.ui.RecognizerDialogListener;
        import org.json.JSONArray;
        import org.json.JSONObject;
        import org.json.JSONTokener;

public class XunFeiUtil {

    public static String appid = "自己的appid";

    public static void initXunFei(Context context){
        SpeechUtility.createUtility(context, SpeechConstant.APPID +"="+appid);
    }



    public static void startVoice(Context context, final XunFeiCallbackListener callbackListener) {
        RecognizerDialog dialog = new RecognizerDialog(context,null);
        dialog.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
        dialog.setParameter(SpeechConstant.ACCENT, "mandarin");
        dialog.setParameter(SpeechConstant.ASR_PTT, "0");
        dialog.setListener(new RecognizerDialogListener() {
            @Override
            public void onResult(RecognizerResult recognizerResult, boolean b) {
                callbackListener.onFinish(recognizerResult);
            }
            @Override
            public void onError(SpeechError speechError) {
            }
        });
        dialog.show();
        //Toast.makeText(this, "请开始说话", Toast.LENGTH_SHORT).show();
    }

    public static String parseIatResult(String json) {
        StringBuffer ret = new StringBuffer();
        try {
            JSONTokener tokener = new JSONTokener(json);
            JSONObject joResult = new JSONObject(tokener);
            JSONArray words = joResult.getJSONArray("ws");
            for (int i = 0; i < words.length(); i++) {
                // 转写结果词，默认使用第一个结果
                JSONArray items = words.getJSONObject(i).getJSONArray("cw");
                JSONObject obj = items.getJSONObject(0);
                ret.append(obj.getString("w"));
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return ret.toString();
    }
}

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.iflytek.cloud.RecognizerResult;
import static com.example.myapplication.XunFeiUtil.parseIatResult;
import static com.example.myapplication.XunFeiUtil.*;

public class MainActivity extends AppCompatActivity implements View.OnClickListener{

    private Button btn_click;
    private EditText mResultText;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        initXunFei(this);
        btn_click = (Button) findViewById(R.id.btn_click);
        mResultText = ((EditText) findViewById(R.id.result));
        btn_click.setOnClickListener(this);
    }

    @Override
    public void onClick(View v) {
        startVoice(this, new XunFeiCallbackListener() {
            @Override
            public void onFinish(RecognizerResult results) {
                String text = parseIatResult(results.getResultString());
                // 自动填写地址
                mResultText.append(text);
            }
        });
    }

}