Create Text To Speech Conversion in Android

Create Project

Create new project in Android Studio with steps as below:

Step 1: Input Project Name and Select Project Location

Step 2: Select SDK for Android App

Step 3: Select Default Activity for App

Step 4: Finish create project

Add Strings

Open res\values\strings.xml file and add new string as below:

<resources>
    <string name="app_name">Learn Android with Real Apps</string>
    <string name="enter_text_to_speak">Enter text to speak</string>
</resources>

Main Activity Layout

Open res\layout\activity_main.xml file and create layout as below:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#ffffff"
    android:orientation="vertical"
    tools:ignore="HardcodedText" >

    <EditText
        android:id="@+id/editTextContent"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dip"
        android:layout_marginTop="20dip"
        android:hint="@string/enter_text_to_speak" />

    <Button
        android:id="@+id/buttonSpeak"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_margin="10dip"
        android:enabled="false"
        android:onClick="speakout"
        android:text="Speak" />

</LinearLayout>

Main Activity Class

Add code to MainActivity.java in android.demo.learnandroidwithrealapps package as below:

package android.demo.learnandroidwithrealapps;

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

import java.util.Locale;

public class MainActivity extends AppCompatActivity implements TextToSpeech.OnInitListener {

    private EditText editTextContent;
    private Button buttonSpeak;

    private TextToSpeech textToSpeech;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        textToSpeech = new TextToSpeech(this, this);
        initView();
    }

    private void initView() {
        editTextContent = findViewById(R.id.editTextContent);
        buttonSpeak = findViewById(R.id.buttonSpeak);
        buttonSpeak.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                buttonSpeak_onClick(view);
            }
        });
    }

    @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) {
                Toast.makeText(getApplicationContext(), "Language not supported", Toast.LENGTH_LONG).show();
            } else {
                buttonSpeak.setEnabled(true);
            }
        } else {
            Toast.makeText(this, "TTS Initilization Failed", Toast.LENGTH_LONG).show();
        }
    }

    public void onDestroy() {
        if (textToSpeech != null) {
            textToSpeech.stop();
            textToSpeech.shutdown();
        }
        super.onDestroy();
    }

    private void buttonSpeak_onClick(View view) {
        String text = editTextContent.getText().toString();
        if (text.isEmpty()) {
            textToSpeech.speak("You haven't typed text", TextToSpeech.QUEUE_FLUSH, null);
        } else {
            textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
        }
    }
}

Structure of Project

Run App

Load Main Activity

Input Text to Speech