TTS setup with any language

TTSDemo.kt

import android.os.Bundle
import android.speech.tts.TextToSpeech
import android.speech.tts.TextToSpeech.*
import android.widget.Toast
import android.widget.Toast.LENGTH_LONG
import androidx.appcompat.app.AppCompatActivity
import com.example.ttsdemo.databinding.ActivityMainBinding
import java.util.*

class MainActivity : AppCompatActivity() {

    private var _binding: ActivityMainBinding? = null
    private val binding get() = _binding!!

    private lateinit var textToSpeechEngine: TextToSpeech

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        _binding = ActivityMainBinding.inflate(layoutInflater)
        val view = binding.root
        setContentView(view)

        textToSpeechEngine = TextToSpeech(this) { status ->
            if (status == SUCCESS) {
                val result = textToSpeechEngine.setLanguage(Locale("tr", "TR"))

                if (result == LANG_MISSING_DATA || result == LANG_NOT_SUPPORTED) {
                    Toast.makeText(this, "Lang is not supported", LENGTH_LONG).show()
                }
            }
        }

        binding.btnSpeech.setOnClickListener {
            val text = binding.etSpeech.text.toString().trim()
            textToSpeechEngine.speak(text, QUEUE_FLUSH, null, "tts1")
        }
    }

    override fun onPause() {
        textToSpeechEngine.stop()
        super.onPause()
    }

    override fun onDestroy() {
        _binding = null
        textToSpeechEngine.stop()
        textToSpeechEngine.shutdown()
        super.onDestroy()
    }
}