TextToSpeech文本转为语音

转自http://flycatdeng.iteye.com/blog/1827245

 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:orientation="vertical" >

     <TextView
         android:id="@+id/speechTxt"
         android:layout_width="fill_parent"
         android:layout_height="fill_parent"
         android:text="you are very good !" />

     <Button
         android:id="@+id/speechBtn"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
         android:layout_alignParentLeft="true"
         android:layout_alignParentTop="true"
         android:layout_marginTop="22dp"
         android:text="text to speech" />

 </RelativeLayout>

 MainAty.java

 package fly.aty;

 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.TextView;
 import android.widget.Toast;

 public class MainAty extends Activity implements OnClickListener, OnInitListener{

     private Button speechBtn; // 按钮控制开始朗读
     private TextView speechTxt; // 需要朗读的内容
     private TextToSpeech textToSpeech; // TTS对象

     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);

         speechBtn = (Button) findViewById(R.id.speechBtn);
         speechBtn.setOnClickListener(this);

         speechTxt = (TextView) findViewById(R.id.speechTxt);
         textToSpeech = new TextToSpeech(this, this); // 参数Context,TextToSpeech.OnInitListener
     }

     /**
      * 用来初始化TextToSpeech引擎
      * status:SUCCESS或ERROR这2个值
      * setLanguage设置语言，帮助文档里面写了有22种
      * TextToSpeech.LANG_MISSING_DATA：表示语言的数据丢失。
      * TextToSpeech.LANG_NOT_SUPPORTED:不支持
      */
     @Override
     public void onInit(int status) {
         if (status == TextToSpeech.SUCCESS) {
             int result = textToSpeech.setLanguage(Locale.US);
             if (result == TextToSpeech.LANG_MISSING_DATA
                     || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                 Toast.makeText(this, "数据丢失或不支持", Toast.LENGTH_SHORT).show();
             }
         }
     }

     @Override
     public void onClick(View v) {
         if (textToSpeech != null && !textToSpeech.isSpeaking()) {
             textToSpeech.setPitch(0.5f);// 设置音调，值越大声音越尖（女生），值越小则变成男声,1.0是常规
             textToSpeech.speak(speechTxt.getText().toString(),
                     TextToSpeech.QUEUE_FLUSH, null);
         }
     }

     @Override
     protected void onStop() {
         super.onStop();
         textToSpeech.stop(); // 不管是否正在朗读TTS都被打断
         textToSpeech.shutdown(); // 关闭，释放资源
     }
 }