Skip to main content

Text To Speech - Android Tutorial


This tutorial explains how to work with android text to speech or android speech synthesis. Also explained changing the language type, pitch level and speed level.

I developed a simple interface with one input field and a button to trigger a event that will take text from input field and speaks out.



Now follow the coding to develop this simple application

1. tts_layout.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"
    tools:context=".TextToSpeechActivty" 
    android:background="@drawable/ddd">

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        style="@style/Button"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="75dp"
        android:text="Speak" 
        android:textColor="@color/black"/>

    <EditText
        android:id="@+id/inputText"
        style="@style/EditText"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/button1"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="221dp"
        android:ems="10"
        android:gravity="bottom" >

        <requestFocus />
    </EditText>

</RelativeLayout>



2. Add the following code in your class.



/**

 * Reads the input value from the user and converts into voice.
 */
public class TextToSpeechActivity extends Activity implements
TextToSpeech.OnInitListener {
private TextToSpeech textToSpeech;
private Button button;
private EditText inputText;

/**
* @see android.app.Activity#onCreate(android.os.Bundle)
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tts_layout);
button = (Button) findViewById(R.id.button1);
inputText = (EditText) findViewById(R.id.inputText);
textToSpeech = new TextToSpeech(this, this);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
convertTextToSpeech();
}

});
convertTextToSpeech();
}

/**
* @see android.app.Activity#onCreateOptionsMenu(android.view.Menu)
*/
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.tts_layout, menu);
return true;
}

/**
* a callback to be invoked indicating the completion of the TextToSpeech
* engine initialization.
* 
* @see android.speech.tts.TextToSpeech.OnInitListener#onInit(int)
*/
@Override
public void onInit(int status) {
if (status == TextToSpeech.SUCCESS) {
int result = textToSpeech.setLanguage(Locale.US);
if (result == TextToSpeech.LANG_MISSING_DATA
|| result == TextToSpeech.LANG_NOT_SUPPORTED) {
Log.e("error", "This Language is not supported");
} else {
convertTextToSpeech();
}
} else {
Log.e("error", "Initilization Failed!");
}
}

/**
* Releases the resources used by the TextToSpeech engine. It is good
* practice for instance to call this method in the onDestroy() method of an
* Activity so the TextToSpeech engine can be cleanly stopped.
* 
* @see android.app.Activity#onDestroy()
*/
@Override
public void onDestroy() {
textToSpeech.shutdown();
}

/**
* Speaks the string using the specified queuing strategy and speech
* parameters.
*/
private void convertTextToSpeech() {
String text = inputText.getText().toString();
if (null == text || "".equals(text)) {
text = "Please give some input.";
}
textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
}
}



NOTE: Use the library android-support-v4.jar 


Changing Language

You can change language to speak by using setLanguage() function. Lot of languages are supported like Canada, French, Chinese, Germany etc.,
textToSpeech.setLanguage(Locale.US);   // English language

Changing Pitch Rate


You can set speed pitch level by using setPitch() function. By default the value is 1.0 You can set lower values than 1.0 to decrease pitch level or greater values for increase pitch level.

textToSpeech.setPitch(0.6);

Changing Speed Rate

The speed rate can be set using setSpeechRate(). This also will take default of 1.0 value. You can double the speed rate by setting 2.0 or make half the speed level by setting 0.
textToSpeech.setSpeechRate(2);



________________________________________________________

Source code for this application texttospeech.zip

Comments

Post a Comment

Popular posts from this blog

Spinner with Search on DropDown - Android Tutorial

If you have more values on Dropdown of Spinner its hard to select the last item by making a long scroll. To overcome this issue Android introduced a component called  AutoCompleteTextView Yes it is!!! Then why Spinner with Search? There may be some requirement even though gave much knowledge about it. There is a simple and good library that helps us to achieve this -  SearchableSpinner Gradle dependencies {     ...     implementation 'com.toptoche.searchablespinner:searchablespinnerlibrary:1.3.1' } Usage Now replace your Normal Android Spinner on XML with the following < com.toptoche.searchablespinnerlibrary.SearchableSpinner     android:id="@+id/id_city"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:background="@android:color/transparent"     android:padding="5dp" /> ______________________________________...
Post a Comment
Read more

Get Phone Number from Contact List - Android Tutorial

When you create an application to send sms or an application to make calls, getting a destination number from the contacts list is a common task. In this Android tip, I am going to show the code to fetch a number from the contacts list. Now let me tell you how to achieve the goal. First, you need to create an Intent object for the PICK_ACTION action. To open the contacts list, the table that contains the contacts information must be specified as a parameter of the constructor of the Intent class. You can refer to the table using ContactsContract.Contacts.CONTENT_URI. Then call the startActivityForResult () method passing the Intent object and request code to open the contacts list. After a contact is selected from the contacts list, to get the result, you need to override the onActivityResult(int reqCode, int resultCode, Intent data) method of the activity. You can call the getData() method of the data parameter to get the table or uri that contains the selected contact. From the t...
1 comment
Read more

Bluetooth Chat Application - Android Tutorial

In this tutorial, we will see about how to design an Android layout for chat application using Chat Bubbles  and the main part is chat via Bluetooth . Main objective of this post is to give an idea about how to allow two-way text chat over Bluetooth in android. Bubbles: Chat bubbles are background image that expands horizontally and vertically as required based on the message posted. Bubbles are Nine-patch Images. Image Nine-patch Image In creating Android chat bubbles, nine-patch image plays a crucial role.  Nine-patch image  is a bitmap which stretches to fit the content posted in the View where it is applied as a background. A NinePatch drawable is a standard PNG image that includes an extra 1-pixel-wide border. It must be saved with the extension  .9.png , and saved into the  res/drawable/  directory of your project. The border is used to define the stretchable and static areas of the image. You indicate a stretchable section ...
8 comments
Read more