Android studio通过科大讯飞的SDK实现文字转语音功能

一、介绍

可以先看看我之前的博客：
Android studio调用科大讯飞的语音转文字功能
Android studio调用科大讯飞的关键词提取功能
Android studio根据文本提取出的关键词在sqlite数据库中查找相关内容
这篇博客主要是记录在Android studio上如何通过科大讯飞的SDK实现文字转语音功能。

二、具体操作

1.首先需要在安卓中配置SDK以及相关权限等内容，由于之前语音转文字已经配置好了，所以不想要重新进行配置，配置方法可参考：
Android studio调用科大讯飞的语音转文字功能
2.新建Java类MyAPP，代码如下：

package com.example.myapplication;

import android.app.Application;

import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechUtility;

public class MyAPP extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        SpeechUtility.createUtility(MyAPP.this, SpeechConstant.APPID + "=填写自己appid"); //初始化
    }
}

3.新建Java类KqwSpeechCompound，代码如下：

package com.example.myapplication;

import android.content.Context;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.widget.Toast;

import com.iflytek.cloud.ErrorCode;
import com.iflytek.cloud.InitListener;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechSynthesizer;
import com.iflytek.cloud.SynthesizerListener;

public class KqwSpeechCompound {
    // Log标签
    private static final String TAG = "KqwSpeechCompound";
    // 上下文
    private Context mContext;
    // 语音合成对象
    private static SpeechSynthesizer mTts;

    /**
     * 发音人
     */
    public final static String[] COLOUD_VOICERS_ENTRIES = {"小燕", "小宇", "凯瑟琳", "亨利", "玛丽", "小研", "小琪", "小峰", "小梅", "小莉", "小蓉", "小芸", "小坤", "小强 ", "小莹",
            "小新", "楠楠", "老孙",};
    public final static String[] COLOUD_VOICERS_VALUE = {"xiaoyan", "xiaoyu", "catherine", "henry", "vimary", "vixy", "xiaoqi", "vixf", "xiaomei",
            "xiaolin", "xiaorong", "xiaoqian", "xiaokun", "xiaoqiang", "vixying", "xiaoxin", "nannan", "vils",};


    /**
     * 构造方法
     *
     * @param context
     */
    public KqwSpeechCompound(Context context) {
        Log.d("tag54", "初始化失败,错ss 误码：" );
        // 上下文
        mContext = context;
        // 初始化合成对象
        mTts = SpeechSynthesizer.createSynthesizer(mContext, new InitListener() {
            @Override
            public void onInit(int code) {
                if (code != ErrorCode.SUCCESS) {
                    Log.d("tag54", "初始化失败,错误码：" + code);
                }
                Log.d("tag54", "初始化失败,q错误码：" + code);
            }
        });
    }

    /**
     * 开始合成
     *
     * @param text
     */
    public void speaking(String text) {
        // 非空判断
        if (TextUtils.isEmpty(text)) {
            return;
        }
        int code = mTts.startSpeaking(text, mTtsListener);
        Log.d("tag54","-----"+code+"++++++++++");

        if (code != ErrorCode.SUCCESS) {
            if (code == ErrorCode.ERROR_COMPONENT_NOT_INSTALLED) {
                Toast.makeText(mContext, "没有安装语音+ code = " + code, Toast.LENGTH_SHORT).show();
            } else {
                Toast.makeText(mContext, "语音合成失败,错误码: " + code, Toast.LENGTH_SHORT).show();
            }
        }


    }

    /*
     * 停止语音播报
     */
    public static void stopSpeaking() {
        // 对象非空并且正在说话
        if (null != mTts && mTts.isSpeaking()) {
            // 停止说话
            mTts.stopSpeaking();
        }
    }

    /**
     * 判断当前有没有说话
     *
     * @return
     */
    public static boolean isSpeaking() {
        if (null != mTts) {
            return mTts.isSpeaking();
        } else {
            return false;
        }
    }

    /**
     * 合成回调监听。
     */
    private SynthesizerListener mTtsListener = new SynthesizerListener() {
        @Override
        public void onSpeakBegin() {
            Log.i(TAG, "开始播放");
        }

        @Override
        public void onSpeakPaused() {
            Log.i(TAG, "暂停播放");
        }

        @Override
        public void onSpeakResumed() {
            Log.i(TAG, "继续播放");
        }

        @Override
        public void onBufferProgress(int percent, int beginPos, int endPos, String info) {
            // TODO 缓冲的进度
            Log.i(TAG, "缓冲 : " + percent);
        }

        @Override
        public void onSpeakProgress(int percent, int beginPos, int endPos) {
            // TODO 说话的进度
            Log.i(TAG, "合成 : " + percent);
        }

        @Override
        public void onCompleted(SpeechError error) {
            if (error == null) {
                Log.i(TAG, "播放完成");

            } else if (error != null) {
                Log.i(TAG, error.getPlainDescription(true));
            }

        }

        @Override
        public void onEvent(int eventType, int arg1, int arg2, Bundle obj) {

        }
    };

    /**
     * 参数设置
     *
     * @return
     */
    private void setParam() {
        // 清空参数
        mTts.setParameter(SpeechConstant.PARAMS, null);
        // 引擎类型 网络
        mTts.setParameter(SpeechConstant.ENGINE_TYPE, SpeechConstant.TYPE_CLOUD);
        // 设置发音人
        mTts.setParameter(SpeechConstant.VOICE_NAME, COLOUD_VOICERS_VALUE[0]);
        // 设置语速
        mTts.setParameter(SpeechConstant.SPEED, "50");
        // 设置音调
        mTts.setParameter(SpeechConstant.PITCH, "50");
        // 设置音量
        mTts.setParameter(SpeechConstant.VOLUME, "100");
        // 设置播放器音频流类型
        mTts.setParameter(SpeechConstant.STREAM_TYPE, "3");

        // mTts.setParameter(SpeechConstant.TTS_AUDIO_PATH, Environment.getExternalStorageDirectory() + "/KRobot/wavaudio.pcm");
        // 背景音乐  1有 0 无
        // mTts.setParameter("bgs", "1");
    }
}

4.在MainActivity.java中进行调用：

//合成语音
kqwSpeechCompound=new KqwSpeechCompound(this);
kqwSpeechCompound.speaking(resultcontent.trim());//resultcontent是一个字符串

综合之前的代码，MainActivity.java的全部代码如下：

package com.example.myapplication;

import androidx.appcompat.app.AppCompatActivity;

import android.content.ContentValues;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.chaquo.python.PyObject;
import com.chaquo.python.Python;
import com.chaquo.python.android.AndroidPlatform;
import com.iflytek.cloud.RecognizerResult;
import static com.example.myapplication.XunFeiUtil.parseIatResult;
import static com.example.myapplication.XunFeiUtil.*;

import java.util.List;


public class MainActivity extends AppCompatActivity implements View.OnClickListener{
    private Button btn_click;
    private EditText mResultText;
    private SQLiteDatabase readableDatabase;
    private KqwSpeechCompound kqwSpeechCompound;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //相当于建立连接
        MySqlhelp mySqlhelp = new MySqlhelp(this,"database.db",null,1);
        //打开 相当于数据库创建完成
        readableDatabase = mySqlhelp.getReadableDatabase();
        //创建things表
        String sql = "create table  if not exists things(name varchar(50) primary key ,content varchar(500))";
        readableDatabase.execSQL(sql);
        //插入几条数据
//        sql = "insert into things values('水杯','水杯在客厅的桌子上')";
//        readableDatabase.execSQL(sql);
//        sql = "insert into things values('钥匙','钥匙在客厅的桌子上')";
//        readableDatabase.execSQL(sql);
//        sql = "insert into things values('鼠标','鼠标在卧室的桌子上')";
//        readableDatabase.execSQL(sql);

        //调用语音识别函数
        initXunFei(this);
        btn_click = (Button) findViewById(R.id.btn_click);
        mResultText = ((EditText) findViewById(R.id.result));
        //点击按钮进行识别
        btn_click.setOnClickListener(this);
        //合成语音
        kqwSpeechCompound=new KqwSpeechCompound(this);

    }

    @Override
    public void onClick(View v) {
        startVoice(this, new XunFeiCallbackListener() {
            @Override
            public void onFinish(RecognizerResult results) {
                String text = parseIatResult(results.getResultString());
                // 获取语音转换成的文字
                mResultText.append(text);
                //调用python代码
                initPython();// 初始化Python环境
                Python py = Python.getInstance();
                PyObject pyObject=py.getModule("tiquguanjianci").callAttr("main",text);
                List returnList =pyObject.asList();//python代码返回的是list
                int size = returnList.size();
                String resultcontent="";//记录数据库查找结果
                for (int i = 0; i < size; i++) {
                   String name= returnList.get(i).toString();//遍历每一个关键词
                   Log.d("res",name);
                   //查询数据库
                   String[] selectionArgs = new  String[]{ name };
                   Cursor cursor = readableDatabase.query("things", null, "name=?", selectionArgs, null, null, null);
                   if (cursor!=null){
                        while (cursor.moveToNext()){
                            String content= cursor.getString(cursor.getColumnIndex("content"));//得到查询结果
                            resultcontent+=content;
                        }
                        cursor.close();
                   }
                }
                if(resultcontent=="")
                {
                    resultcontent="抱歉，没有找到";
                    Log.d("res1","没有找到");
                }
                else
                {
                    Log.d("res1",resultcontent);
                }
                kqwSpeechCompound.speaking(resultcontent.trim());
            }
        });
    }
    // 初始化Python环境
    public void initPython(){
        if (! Python.isStarted()) {
            Python.start(new AndroidPlatform(this));
        }
    }
}

全部的文件结构如下：


至此，就可以实现文字转语音的功能了。