package cn.captain.texttospeach;import java.util.Locale; import android.app.Activity; import android.os.Bundle; import android.speech.tts.TextToSpeech; import android.text.Editable; import android.text.TextWatcher; import android.view.View; import android.widget.Button; import android.widget.CheckBox; import android.widget.EditText; import android.widget.Toast; public class TextToSpeachActivity extends Activity  { private EditText mEditText = null; private Button readButton = null; private Button saveButton = null; private CheckBox mCheckBox = null; private TextToSpeech mTextToSpeech = null; /** Called when the activity is first created. */@Override public void onCreate(Bundle savedInstanceState)  { super.onCreate(savedInstanceState); setContentView(R.layout.main); mEditText = (EditText)this.findViewById(R.id.edittext); readButton = (Button)this.findViewById(R.id.rbutton); saveButton = (Button)this.findViewById(R.id.sbutton); mCheckBox = (CheckBox)this.findViewById(R.id.checkbox); //实例并初始化TTS对象 mTextToSpeech = new TextToSpeech(this,new TextToSpeech.OnInitListener() { @Override public void onInit(int status)  { // TODO Auto-generated method stub if(status == TextToSpeech.SUCCESS) { int supported = mTextToSpeech.setLanguage(Locale.US);mTextToSpeech.setSpeechRate(1);if((supported != TextToSpeech.LANG_AVAILABLE)&&(supported != TextToSpeech.LANG_COUNTRY_AVAILABLE)) { displayToast("不支持当前语言！"); } } } });      //朗读按钮监听 readButton.setOnClickListener(new View.OnClickListener()  { @Override public void onClick(View v)  { // TODO Auto-generated method stub //朗读EditText里的内容 mTextToSpeech.speak(mEditText.getText().toString(), TextToSpeech.QUEUE_FLUSH, null); } }); //保存按钮监听 saveButton.setOnClickListener(new View.OnClickListener()  { @Override public void onClick(View v)  { // TODO Auto-generated method stub //将EditText里的内容保存为语音文件 int r = mTextToSpeech.synthesizeToFile(mEditText.getText().toString(), null, "/mnt/sdcard/speak.wav"); if(r == TextToSpeech.SUCCESS) displayToast("保存成功！");                 } }); //EditText内容变化监听 mEditText.addTextChangedListener(mTextWatcher); } private TextWatcher mTextWatcher = new TextWatcher() { @Override public void afterTextChanged(Editable s)  { // TODO Auto-generated method stub //如果是边写边读 if(mCheckBox.isChecked()&&(s.length()!=0)) { //获得EditText的所有内容 String t = s.toString();         mTextToSpeech.speak(t.substring(s.length()-1), TextToSpeech.QUEUE_FLUSH, null); } } @Override public void beforeTextChanged(CharSequence s, int start, int count, int after)  { // TODO Auto-generated method stub } @Override public void onTextChanged(CharSequence s, int start, int before, int count)  { // TODO Auto-generated method stub } };  //显示Toast函数 private void displayToast(String s) { Toast.makeText(TextToSpeachActivity.this, s, Toast.LENGTH_SHORT).show(); } @Override public void onDestroy() { super.onDestroy(); if(mTextToSpeech != null) mTextToSpeech.shutdown();//关闭TTS } }

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:layout_width="fill_parent"android:layout_height="fill_parent"android:orientation="vertical" ><EditTextandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:id="@+id/edittext"/><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="@string/button" android:id="@+id/rbutton"/><Buttonandroid:layout_width="wrap_content"android:layout_height="wrap_content"android:text="保存" android:id="@+id/sbutton"/><CheckBox  android:id="@+id/checkbox" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="边写边读" android:checked="true" />  </LinearLayout>

<!-- 语音权限 -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>