วันพุธที่ 5 กันยายน พ.ศ. 2555

๓.๑ Text to Speech (TTS)

Text to Speech (TTS)

รับคำศัพท์แล้วออกเสียง พิมพ์หลายๆ คำก็ได้

ที่มา: Android SDK: Using the Text to Speech Engine
http://mobile.tutsplus.com/tutorials/android/android-sdk-using-the-text-to-speech-engine/




Main.java

package ubu.example.speak;

import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.view.View;
import android.widget.EditText;
import android.speech.tts.TextToSpeech;
import android.speech.tts.TextToSpeech.OnInitListener;
import android.content.Intent;
import java.util.Locale;
import android.widget.Toast;

public class Main extends Activity implements OnClickListener, OnInitListener {
//TTS object
private TextToSpeech myTTS;
//status check code
private int MY_DATA_CHECK_CODE = 0;

//create the Activity
public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
setContentView(R.layout.main);

//get a reference to the button element listed in the XML layout
Button speakButton = (Button)findViewById(R.id.speak);
//listen for clicks
speakButton.setOnClickListener(this);

//check for TTS data
Intent checkTTSIntent = new Intent();
checkTTSIntent.setAction(TextToSpeech.Engine.ACTION_CHECK_TTS_DATA);
startActivityForResult(checkTTSIntent, MY_DATA_CHECK_CODE);
}

//respond to button clicks
public void onClick(View v) {

//get the text entered
EditText enteredText = (EditText)findViewById(R.id.enter);
String words = enteredText.getText().toString();
speakWords(words);
}

//speak the user text
private void speakWords(String speech) {

//speak straight away
myTTS.speak(speech, TextToSpeech.QUEUE_FLUSH, null);
}

//act on result of TTS data check
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (requestCode == MY_DATA_CHECK_CODE) {
if (resultCode == TextToSpeech.Engine.CHECK_VOICE_DATA_PASS) {
//the user has the necessary data - create the TTS
myTTS = new TextToSpeech(this, this);
}
else {
//no data - install it now
Intent installTTSIntent = new Intent();
installTTSIntent.setAction(TextToSpeech.Engine.ACTION_INSTALL_TTS_DATA);
startActivity(installTTSIntent);
}
}
}

//setup TTS
public void onInit(int initStatus) {

//check for successful instantiation
if (initStatus == TextToSpeech.SUCCESS) {
if(myTTS.isLanguageAvailable(Locale.US)==TextToSpeech.LANG_AVAILABLE)
myTTS.setLanguage(Locale.US);
}
else if (initStatus == TextToSpeech.ERROR) {
Toast.makeText(this, "Sorry! Text To Speech failed...", Toast.LENGTH_LONG).show();
}
}
}


main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<TextView android:id="@+id/intro"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Enter some text:"
/>
<EditText android:id="@+id/enter"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>

 <Button
android:id="@+id/speak"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_below="@+id/enter"
android:text="Speak" />

</RelativeLayout>
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