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百度语音合成Android开发文档

简介

本文针对百度语音合成Android开发提供详细指导。文档涵盖了离线语言合成和多种在线语音合成的实现方法，适用于 developers 开发与百度合作的语音合成功能。

源代码

以下是本文的核心实现源代码，涵盖了Java和XML布局两个主要部分。

1. Java源代码

import android.Manifest;import android.content.Context;import android.content.pm.PackageManager;import android.os.Environment;import android.os.Handler;import android.support.v4.app.ActivityCompat;import android.support.v4.content.ContextCompat;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import com.baidu.tts.auth.AuthInfo;import com.baidu.tts.client.SpeechSynthesizer;import com.baidu.tts.client.TtsMode;import java.io.File;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;public class MainActivity extends AppCompatActivity {    // 定义按钮对象    Button buttonSpeak = null;    Button buttonStop = null;    // 定义语音合成相关路径    private String dirFile = Environment.getExternalStorageDirectory().getPath() + File.separator + "my_voice" + File.separator;    private String textFilename = "bd_etts_text.dat";    private String modelFilename = "bd_etts_speech_f7.dat";    // 定义百度账号信息    private String appId = "17246190";    private String appKey = "UfrBeadhzS2UhuDiGuPa8TlD";    private String secretKey = "G73dYXjcEgZflVgWURVhAuVUM25nAuAT";    // 定义TtsMode类型    private TtsMode ttsMode = TtsMode.MIX;    // 定义语音合成器    private SpeechSynthesizer mSpeechSynthesizer = null;    private static final String TAG = "MainActivity";    // 获得Activity生命周期方法    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        initPermission();        initView();        initTTS();    }    // 初始化权限    private void initPermission() {        String[] permissions = {            Manifest.permission.INTERNET,            Manifest.permission.ACCESS_NETWORK_STATE,            Manifest.permission.MODIFY_AUDIO_SETTINGS,            Manifest.permission.WRITE_EXTERNAL_STORAGE,            Manifest.permission.WRITE_SETTINGS,            Manifest.permission.READ_PHONE_STATE,            Manifest.permission.ACCESS_WIFI_STATE,            Manifest.permission.CHANGE_WIFI_STATE        };        ArrayList
   
     toApplyList = new ArrayList<>();        for (String perm : permissions) {            if (PackageManager.PERMISSION_GRANTED != ContextCompat.checkSelfPermission(this, perm)) {                toApplyList.add(perm);            }        }        if (!toApplyList.isEmpty()) {            ActivityCompat.requestPermissions(this, toApplyList.toArray(new String[0]), 123);        }    }    // 初始化界面控件    private void initView() {        buttonSpeak = findViewById(R.id.speak);        buttonSpeak.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                mSpeechSynthesizer.speak("Hello world !");            }        });        buttonStop = findViewById(R.id.stop);        buttonStop.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                stop();            }        });    }    // 初始化语音合成功能    private void initTTS() {        mSpeechSynthesizer = SpeechSynthesizer.getInstance();        mSpeechSynthesizer.setContext(this);        int result = mSpeechSynthesizer.setAppId(appId);        result = mSpeechSynthesizer.setApiKey(appKey, secretKey);        System.out.println("错误码:" + result);        boolean isMix = this.ttsMode.equals(TtsMode.MIX);        if (isMix) {            if (isDirExist(dirFile)) {                copyAssetsToSdcard(this, dirFile + textFilename, textFilename);                copyAssetsToSdcard(this, dirFile + modelFilename, modelFilename);            }            mSpeechSynthesizer.setParam(SpeechSynthesizer.PARAM_TTS_TEXT_MODEL_FILE, dirFile + textFilename);            mSpeechSynthesizer.setParam(SpeechSynthesizer.PARAM_TTS_SPEECH_MODEL_FILE, dirFile + modelFilename);        } else {            // 其他模式需自行处理离线模型        }        AuthInfo authInfo = mSpeechSynthesizer.auth(this.ttsMode);        if (authInfo != null && authInfo.isSuccess()) {            System.out.println("授权成功！");        } else {            System.out.println("授权失败！");        }    }    // 停止语音合成    private void stop() {        int result = mSpeechSynthesizer.stop();        System.out.println("错误码:" + result);    }    // 打印日志    private void print(String message) {        Log.i(TAG, message);    }    //销毁方法    @Override    protected void onDestroy() {        if (mSpeechSynthesizer != null) {            mSpeechSynthesizer.stop();            mSpeechSynthesizer.release();            mSpeechSynthesizer = null;            print("释放资源成功");        }        super.onDestroy();    }    // 复制Assets目录下的文件到SD卡    private void copyAssetsToSdcard(Context context, String filePath, String fileName) {        File file = new File(filePath);        if (!file.exists()) {            file.mkdirs();        }        try {            InputStream inputStream = context.getResources().getAssets().open(fileName);            FileOutputStream fileOutputStream = new FileOutputStream(filePath);            byte[] buffer = new byte[1024];            while ((bufferSize = inputStream.read(buffer, 0, 1024)) >= 0) {                fileOutputStream.write(buffer, 0, bufferSize);            }            inputStream.close();            fileOutputStream.close();        } catch (IOException e) {            Log.d("Baidu-TTS", "Baidu-TTS write dat error!");            e.printStackTrace();        }    }    // 检查目录是否存在    private boolean isDirExist(String dirPath) {        File dirFile = new File(dirPath);        if (dirFile.exists()) {            return true;        } else {            return dirFile.mkdirs();        }    }    // 获取权限回调    @Override    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);    }}
   

2. XML布局源代码

3. Android.Manifest文件的权限

本文通过模块化的结构详细介绍了百度语音合成的实现方法，涵盖了从接入百度开放平台到语音模型的下载与应用的整体流程。开发者可以根据自身需求选择适当的语音合成模式（如纯在线或离线融合模式），这将极大地提高开发效率和应用的语音交互体验。