Android实现语音合成与识别功能

package com.example.voice;
 
import java.util.ArrayList;
 
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
 
import com.iflytek.cloud.speech.*;
 
public class VoiceActivity extends Activity {
 private static final String APPID = "appid=52cddb99";
 private EditText et = null;
 private Button btn1 = null;
 private Button btn2 = null;
 String text = "";
 String temp="";
 
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 setContentView(R.layout.activity_voice);
 et = (EditText) findViewById(R.id.et);
 btn1 = (Button) findViewById(R.id.btn1);
 btn1.setOnClickListener(mylistener);
 btn2 = (Button) findViewById(R.id.btn2);
 btn2.setOnClickListener(mylistener);
 }
 
 private OnClickListener mylistener = new OnClickListener() {
 public void onClick(View v) {
 SpeechUser.getUser().login(VoiceActivity.this, null, null, APPID,
 loginListener);
 Button btn = (Button) v;
 switch (btn.getId()) {
 case R.id.btn1:
 SpeechSynthesizer mSpeechSynthesizer = SpeechSynthesizer
 .createSynthesizer(VoiceActivity.this);
 mSpeechSynthesizer.setParameter(SpeechConstant.VOICE_NAME,
 "xiaoyu");
 mSpeechSynthesizer.setParameter(SpeechConstant.SPEED, "50");
 mSpeechSynthesizer.startSpeaking(et.getText().toString(),
 mSynListener);
 break;
 case R.id.btn2:
 text = "";
 temp="";
 SpeechRecognizer recognizer = SpeechRecognizer
 .createRecognizer(VoiceActivity.this);
 recognizer.setParameter(SpeechConstant.DOMAIN, "iat");
 recognizer.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
 recognizer.setParameter(SpeechConstant.ACCENT, "accent");
 recognizer.startListening(mRecoListener);
 break;
 }
 }
 };
 private SynthesizerListener mSynListener = new SynthesizerListener() {
 public void onBufferProgress(int arg0, int arg1, int arg2, String arg3) {
 }
 
 public void onCompleted(SpeechError arg0) {
 }
 
 public void onSpeakBegin() {
 }
 
 public void onSpeakPaused() {
 }
 
 public void onSpeakProgress(int arg0, int arg1, int arg2) {
 }
 
 public void onSpeakResumed() {
 }
 };
 private RecognizerListener mRecoListener = new RecognizerListener() {
 public void onBeginOfSpeech() {
 }
 
 public void onEndOfSpeech() {
 }
 
 public void onError(SpeechError error) {
 
 }
 
 public void onEvent(int arg0, int arg1, int arg2, String arg3) {
 }
 
 public void onVolumeChanged(int arg0) {
 }
 
 public void onResult(RecognizerResult results, boolean isLast) {
 //将解析后的字符串连在一起
 temp=results.getResultString();
 JsonParser json = new JsonParser();
 text+=json.parseIatResult(temp);
 if(isLast==true)
 {
 et.setText(text, null);
 Toast.makeText(VoiceActivity.this,text,Toast.LENGTH_LONG).show();
 }
 }
 };
 private SpeechListener loginListener = new SpeechListener() {
 public void onCompleted(SpeechError arg0) {
 }
 
 public void onData(byte[] arg0) {
 }
 
 public void onEvent(int arg0, Bundle arg1) {
 }
 };
 
 public boolean onCreateOptionsMenu(Menu menu) {
 // Inflate the menu; this adds items to the action bar if it is present.
 getMenuInflater().inflate(R.menu.voice, menu);
 return true;
 }
}

package com.example.voice;
 
import org.json.JSONArray;
import org.json.JSONObject;
import org.json.JSONTokener;
 
import android.text.TextUtils;
 
//import com.iflytek.speech.ErrorCode;
//import com.iflytek.speech.SpeechError;
/**
 * 对云端返回的Json结果进行解析
 * 
 * @author iFlytek
 * @since 20131211
 */
public class JsonParser {
 
 /**
 * 听写结果的Json格式解析
 * 
 * @param json
 * @return
 */
 public static String parseIatResult(String json) {
 if (TextUtils.isEmpty(json))
 return "";
 
 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