Voice To Text Example Android kotlin

output

1/  Modify activity_main.xml

Add a mic_icon Vector Assets and Design - XML.

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <ImageView
        android:id="@+id/mic"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_marginTop="204dp"
        android:src="@drawable/mic_icon"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/speech_to_text"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="44dp"
        android:padding="10dp"
        android:text="Voice to Text"
        android:textSize="30sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/mic" />


</androidx.constraintlayout.widget.ConstraintLayout>

2/ Modify MainActivity.kt

package com.zissofworks.voicetotextexampleandroidkotlin

import android.content.Intent
import android.os.Bundle
import android.speech.RecognizerIntent
import android.widget.ImageView
import android.widget.TextView
import androidx.activity.enableEdgeToEdge
import androidx.appcompat.app.AppCompatActivity
import androidx.core.view.ViewCompat
import androidx.core.view.WindowInsetsCompat
import java.util.Locale


class MainActivity : AppCompatActivity() {
    private lateinit var mic: ImageView
    private lateinit var speechToText: TextView
    private val REQUEST_CODE_SPEECH_INPUT: Int = 1

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(R.layout.activity_main)
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
            insets
        }

        mic = findViewById(R.id.mic)
        speechToText = findViewById(R.id.speech_to_text)

        mic.setOnClickListener {
            val intent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
            intent.putExtra(
                RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
            )
            intent.putExtra(
                RecognizerIntent.EXTRA_LANGUAGE,
                Locale.getDefault()
            )
            intent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Speak to text")
            startActivityForResult(intent, REQUEST_CODE_SPEECH_INPUT)
        }
    }

    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {
        super.onActivityResult(requestCode, resultCode, data)
        if (requestCode == REQUEST_CODE_SPEECH_INPUT) {
            if (resultCode == RESULT_OK && data != null) {
                val result = data.getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS)
                speechToText.text = result?.get(0) ?: ""
            }
        }
    }
}