使用TextToSpeech 可以朗读文本,要先初始化TextToSpeech 对象,通过实现TextToSpeech.OnInitListener接口来检测初始化状态成功与否(设置语言等动作是否成功),初始化成功后,才可以使用,用完该对象后,要调用shutdown方法,释放TextToSpeech (TTS)引擎占用的资源
- package com.zhou.activity;
- import java.util.Locale;
- import java.util.Random;
- import android.app.Activity;
- import android.os.Bundle;
- import android.speech.tts.TextToSpeech;
- import android.util.Log;
- import android.view.View;
- import android.widget.Button;
- public class TextToSpeechActivity extends Activity implements TextToSpeech.OnInitListener{
- private static final String TAG = "TextToSpeechDemo";
- private TextToSpeech mTts;
- private Button mAgainButton;
- @Override
- public void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.text_to_speech);
- // 初始化TextToSpeech对象. 是一个异步操作.
- // 初始化监听对象,在完成初始化时调用
- mTts = new TextToSpeech(this,this);
- //取得按钮
- mAgainButton = (Button) findViewById(R.id.again_button);
- //为按钮设置单击事件
- mAgainButton.setOnClickListener(new View.OnClickListener() {
- public void onClick(View v) {
- sayHello();
- }
- });
- }
- @Override
- public void onDestroy() {
- if (mTts != null) {
- //停止TextToSpeech
- mTts.stop();
- //释放TextToSpeech占用的资源
- mTts.shutdown();
- }
- super.onDestroy();
- }
- //实现TextToSpeech.OnInitListener接口.
- public void onInit(int status) {
- //状态成功
- if (status == TextToSpeech.SUCCESS) {
- //设置语言
- int result = mTts.setLanguage(Locale.US);
- //(我试了中文,不好使????)
- // int result = mTts.setLanguage(Locale.CHINA);
- if (result == TextToSpeech.LANG_MISSING_DATA ||
- result == TextToSpeech.LANG_NOT_SUPPORTED) {
- // 如果不支持该语言
- Log.e(TAG, "Language is not available.");
- } else {
- // TTS 引擎已经成功初始化
- //按钮设置为可点击
- mAgainButton.setEnabled(true);
- //发音朗读
- sayHello();
- }
- } else {
- // 初始化失败
- Log.e(TAG, "Could not initialize TextToSpeech.");
- }
- }
- private static final Random RANDOM = new Random();
- private static final String[] HELLOS = {
- "Hello",
- "Salutations",
- "Greetings",
- "Howdy",
- "What's crack-a-lackin?",
- "That explains the stench!"
- };
- //尝试朗读中文,失败了,语言设置为中国的也不行
- // private static final String[] HELLOS = {
- // "中国",
- // "北京",
- // "上海",
- // "吉林",
- // "辽宁",
- // "北京欢迎你"
- // };
- private void sayHello() {
- // Select a random hello.
- int helloLength = HELLOS.length;
- String hello = HELLOS[RANDOM.nextInt(helloLength)];
- //朗读
- mTts.speak(hello,TextToSpeech.QUEUE_FLUSH, null);
- }
- }
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