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Check Text To Speech Engine Status

package app.test; import java.util.HashMap; import java.util.StringTokenizer; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.speech.tts.TextToSpeech; import android.speech.tts.TextToSpeech.OnInitListener; import android.speech.tts.TextToSpeech.OnUtteranceCompletedListener; import android.util.Log; import android.view.View; import android.widget.Button; import android.widget.EditText; public class Test extends Activity implements OnInitListener, OnUtteranceCompletedListener {   private EditText words = null;   private Button speakBtn = null;     private static final int REQ_TTS_STATUS_CHECK = 0;   private static final String TAG = "TTS Demo";     private TextToSpeech mTts;     private int uttCount = 0;     private int lastUtterance = -1;   private HashMap<String, String> params = new HashMap<String, String>();     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         words = (EditText)findViewById(R.id.wordsToSpeak);         speakBtn = (Button)findViewById(R.id.speak);         Intent checkIntent = new Intent();         checkIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);         startActivityForResult(checkIntent, REQ_TTS_STATUS_CHECK);     }        public void doSpeak(View view) {     StringTokenizer st = new StringTokenizer(words.getText().toString(),",.");     while (st.hasMoreTokens()) {         params.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID,String.valueOf(uttCount++));       mTts.speak(st.nextToken(), TextToSpeech.QUEUE_ADD, params);        }   }   protected void onActivityResult(int requestCode, int resultCode, Intent data) {         if (requestCode == REQ_TTS_STATUS_CHECK) {             switch (resultCode) {             case TextToSpeech.Engine.CHECK_VOICE_DATA_PASS:                 mTts = new TextToSpeech(this, this);                 break;             case TextToSpeech.Engine.CHECK_VOICE_DATA_BAD_DATA:             case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_DATA:             case TextToSpeech.Engine.CHECK_VOICE_DATA_MISSING_VOLUME:                 Intent installIntent = new Intent();                 installIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);                 startActivity(installIntent);                 break;             case TextToSpeech.Engine.CHECK_VOICE_DATA_FAIL:             default:                 Log.e(TAG, "Got a failure. TTS not available");             }         }     }   public void onInit(int status) {     if( status == TextToSpeech.SUCCESS) {       speakBtn.setEnabled(true);       mTts.setOnUtteranceCompletedListener(this);     }   }   @Override   public void onPause()   {     super.onPause();     if( mTts != null)       mTts.stop();   }   @Override     public void onDestroy()   {         super.onDestroy();         mTts.shutdown();     }   public void onUtteranceCompleted(String uttId) {     lastUtterance = Integer.parseInt(uttId);   } } //main.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"   android:orientation="vertical" android:layout_width="fill_parent"   android:layout_height="fill_parent">   <EditText android:id="@+id/wordsToSpeak"     android:hint="Type words to speak here"     android:layout_width="fill_parent"     android:layout_height="wrap_content"/>   <Button android:id="@+id/speak"     android:text="Speak"   android:layout_width="wrap_content"   android:layout_height="wrap_content"   android:onClick="doSpeak"   android:enabled="false" /> </LinearLayout>