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Android Text to Speech Simple App

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link : Android Text to Speech Simple App

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Android Text to Speech Simple App




Hello friends, In this post I am going to show how to use Android Text To Speech feature in your project . This is a very interesting feature in which whenever you use this feature in your app, it will convert the text into speech i.e. speak out or pronounce the text you entered.

In this tutorial i also explained changing the language type, pitch level and speed level.  


1. Create a new project by going to File ⇒ New Android Project. and fill required details.

2. Implement your MainActivity class from TextToSpeech.OnInitListener

3. Now add below code to your MainActivity.java
package gracious.text_to_speech;

import android.os.Bundle;
import android.speech.tts.TextToSpeech;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import java.util.Locale;

public class MainActivity extends AppCompatActivity implements TextToSpeech.OnInitListener{

    private TextToSpeech mTextToSpeech;
    private Button mButton;
    private EditText mEditText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        mTextToSpeech = new TextToSpeech(this, this);
        mButton = (Button) findViewById(R.id.button);
        mEditText = (EditText) findViewById(R.id.editText);

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

            @Override
            public void onClick(View arg0) {

                String text = mEditText.getText().toString();
                mTextToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
            }
        });
    }

    @Override
    public void onInit(int status) {
        if (status == TextToSpeech.SUCCESS) {

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

            if (result == TextToSpeech.LANG_MISSING_DATA
                    || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                //No action to be take place
            } else {
                mButton.setEnabled(true);

                String text = mEditText.getText().toString();
                mTextToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
            }

        } else {
           //There is some error
        }
    }

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

4. Now add below code to your content_main.xmlfile:-
<?xml version="1.0" encoding="utf-8"?>

  <RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:context="gracious.text_to_speech.MainActivity"
    tools:showIn="@layout/activity_main">

    <EditText
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/editText" android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" android:layout_marginTop="94dp"/>

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Speack out the Text"
        android:id="@+id/button" android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"/>

</RelativeLayout>

4. Add below code to your activity_main.xml
<?xml version="1.0" encoding="utf-8"?>

  <android.support.design.widget.CoordinatorLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="gracious.text_to_speech.MainActivity">  

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">  

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:popupTheme="@style/AppTheme.PopupOverlay"/>  

    </android.support.design.widget.AppBarLayout>  

    <include layout="@layout/content_main"/> 

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email"/>  

</android.support.design.widget.CoordinatorLayout>

That's it, Test your code and app now.

Changing Language

You can change language to speak by using setLanguage() function. Lot of languages are supported like Canada, French, Chinese, Germany etc.
mTextToSpeech.setLanguage(Locale.CHINESE);  // To set as Chinese lang

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.
mTextToSpeech.setPitch(0.5);

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 0.5
mTextToSpeech.setSpeechRate(2);





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