SpeechSynthesisActivity.java

package com.godoro.androidmedia;

import android.os.Build;
import android.speech.tts.TextToSpeech;
import android.speech.tts.Voice;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

import java.util.Locale;

public class SpeechSynthesisActivity extends AppCompatActivity {

    private Button speakButton;
    private TextView textEdit;
    private TextToSpeech textToSpeech;
    private Locale turkishLocale = new Locale("tr", "TR");

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_speech_synthesis);
        speakButton=findViewById(R.id.speakButton);
        textEdit=findViewById(R.id.textEdit);
        textEdit.setText("Godoro Android'i Konuşturuyor!");
        speakButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                speak();
            }
        });
        createTextToSpeech();
    }
    private void createTextToSpeech(){
        TextToSpeech.OnInitListener listener = new TextToSpeech.OnInitListener() {
            @Override
            public void onInit(int status) {
                initializeTextToSpeech(status);
            }
        };
        textToSpeech= new TextToSpeech(this, listener);
        //textToSpeech = new TextToSpeech(this, listener, "com.google.android.tts");
        textToSpeech.setPitch(1);
        logVoices();

    }
    private void initializeTextToSpeech(int status){
        if (status == TextToSpeech.SUCCESS) {

            int result = textToSpeech.setLanguage(turkishLocale);

            if (result == TextToSpeech.LANG_MISSING_DATA
                    || result == TextToSpeech.LANG_NOT_SUPPORTED) {
                String message = "Desteklenmeyen yazıdan konuşma dili";
                Toast.makeText(SpeechSynthesisActivity.this, message, Toast.LENGTH_LONG).show();
                Log.e("GodoroAndroid", message);
            } else {
                String message = "Yazıdan konuşma yapılıyor";
                Toast.makeText(SpeechSynthesisActivity.this, message, Toast.LENGTH_LONG).show();
                Log.i("GodoroAndroid", message);
            }

        } else {
            String message = "Yazıdan konuşma başarısız";
            Toast.makeText(SpeechSynthesisActivity.this, message, Toast.LENGTH_LONG).show();
            Log.e("GodoroAndroid", message);
        }
    }
    private void logVoices() {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            if (textToSpeech.getVoices() != null) {
                for (Voice voice : textToSpeech.getVoices()) {
                    Log.i("GodoroAndroid", "Ses : "+voice.getName());
                }
            }
        }
    }

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

    private void speak() {
        String text = textEdit.getText().toString();
        textToSpeech.speak(text, TextToSpeech.QUEUE_FLUSH, null);
    }
}