Android的数据存储和IO - 自动朗读（TTS）

package wwj.speech;

import java.util.Locale;

import android.app.Activity;
import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Speech extends Activity {

TextToSpeech tts;
EditText editText;
Button speech;
Button record;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//初始化TextToSpeech对象
tts = new TextToSpeech(this, new OnInitListener() {

public void onInit(int status) {
// TODO Auto-generated method stub
//如果装载TTS引擎成功
if(status == TextToSpeech.SUCCESS){
//设置使用美式英语朗读
int result = tts.setLanguage(Locale.US);
//如果不支持所设置的语言
if(result != TextToSpeech.LANG_COUNTRY_AVAILABLE
&& result != TextToSpeech.LANG_AVAILABLE){
Toast.makeText(Speech.this, "TTS暂时不支持这种语言的朗读。", 50000).show();
}
}
}
});
editText = (EditText)findViewById(R.id.txt);
speech = (Button) findViewById(R.id.speech);
record = (Button) findViewById(R.id.record);
speech.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
//执行朗读
tts.speak(editText.getText().toString(), TextToSpeech.QUEUE_ADD, null);
}
});
record.setOnClickListener(new OnClickListener() {

public void onClick(View v) {
// TODO Auto-generated method stub
//将朗读文本的音频记录到指定文件
tts.synthesizeToFile(editText.getText().toString(), null, "/mnt/sdcard/sound.wav");
Toast.makeText(Speech.this, "声音记录成功! ", 50000).show();
}
});
}
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
//关闭TextToSpeech对象
if(tts != null){
tts.shutdown();
}
super.onDestroy();
}
}