http://upadhyayjiteshandroid.blogspot.kr/2013/01/android-text-to-speechtts.html

In this blog the TTS is discussed as it is always nice to use TTS in android . we just need to follow few steps.
 make a new project with name AndroidTextToSpeech and a main activity with the name AndroidTextToSpeechActivity.java and a layout as main.xml

1) copy the following code to yours AndroidTextToSpeechActivity.java


import java.util.Locale;

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;
import android.widget.EditText;

public class AndroidTextToSpeechActivity extends Activity implements
TextToSpeech.OnInitListener {
/** Called when the activity is first created. */

private TextToSpeech tts;
private Button btnSpeak;
private EditText txtText;

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

tts = new TextToSpeech(this, this);

btnSpeak = (Button) findViewById(R.id.btnSpeak);

txtText = (EditText) findViewById(R.id.txtText);

// button on click event
btnSpeak.setOnClickListener(new View.OnClickListener() {

public void onClick(View arg0) {
speakOut();
}

});
}

@Override
public void onDestroy() {
// Don't forget to shutdown!
if (tts != null) {
tts.stop();
tts.shutdown();
}
super.onDestroy();
}

public void onInit(int status) {
// TODO Auto-generated method stub

if (status == TextToSpeech.SUCCESS) {

int result = tts.setLanguage(Locale.US);

// tts.setPitch(5); // set pitch level

// tts.setSpeechRate(2); // set speech speed rate

if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("TTS", "oops it is not supported");
} else {
btnSpeak.setEnabled(true);
speakOut();
}

} else {
Log.e("TTS", "Initilization Failed");
}

}

private void speakOut() {

String text = txtText.getText().toString();

tts.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}

2) and now in this step you need to make a layout as follows at main.xml


<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:background="#044372">
   
<TextView android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:text="Text To Speech (TTS)"
     android:padding="15dip"
     android:textColor="#ffffff"
     android:textSize="26dip"
     android:gravity="center"
     android:textStyle="bold"/>

    <EditText android:id="@+id/txtText"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:hint="Enter your text here"
        android:layout_marginTop="20dip"       
        android:layout_margin="10dip"/>
   
    <Button android:id="@+id/btnSpeak"
         android:layout_width="fill_parent"
         android:layout_height="wrap_content"
         android:text="Text to Speech"
         android:layout_margin="10dip"/>

</LinearLayout>

3) run the program  at emulator/device and you can see the output