【Android 多媒体应用】使用 TTS

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.widget.Button;

public class MainActivity extends Activity {
    private TextToSpeech tts;
    private Button btnSpeak;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        btnSpeak = (Button) findViewById(R.id.btnSpeak);
        btnSpeak.setOnClickListener(new MyOnClickListener());
        //1.创建TextToSpeech对象，创建时传入OnInitListener监听器监听创建是否成功
        tts = new TextToSpeech(this, new MyOnInitialListener());

    }

    class MyOnInitialListener implements OnInitListener {

        @Override
        public void onInit(int status) {
            //2.设置TextToSpeech所使用语言、国家选项，通过返回值判断TTS是否支持该语言、国家选项
            tts.setLanguage(Locale.ENGLISH);

        }

    }

    class MyOnClickListener implements View.OnClickListener {

        @Override
        public void onClick(View v) {

            switch (v.getId()) {
                case R.id.btnSpeak:
                    //3.调用speak()或synthesizeToFile方法
                    tts.speak("Hello，I am TTS ", TextToSpeech.QUEUE_FLUSH, null);
                    break;

                default:
                    break;
            }

        }

    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        if (tts != null) { 
            //4.关闭TTS，回收资源
            tts.shutdown();
        }
    }
}