Voice To Text Example Android

1/  Add a Mic 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/baseline_mic_24"
        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>

1/  MainActivity - RecognizerIntent.ACTION_RECOGNIZE_SPEECH is used to get Voice prompt and used startActivityForResult() to get the text

package com.tutorialb.voicetotext;

import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognizerIntent;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.activity.EdgeToEdge;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

import java.util.ArrayList;
import java.util.Locale;
import java.util.Objects;

public class MainActivity extends AppCompatActivity {

    private ImageView mic;
    private TextView Speech_to_text;
    private static final int REQUEST_CODE_SPEECH_INPUT = 1;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main), (v, insets) -> {
            Insets systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars());
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom);
            return insets;
        });

        mic = findViewById(R.id.mic);
        Speech_to_text = findViewById(R.id.speech_to_text);

        mic.setOnClickListener(v ->{
            Intent intent
                    = new 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
    protected void onActivityResult(int requestCode, int resultCode,
                                    @Nullable Intent data)
    {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == REQUEST_CODE_SPEECH_INPUT) {
            if (resultCode == RESULT_OK && data != null) {
                ArrayList<String> result = data.getStringArrayListExtra(
                        RecognizerIntent.EXTRA_RESULTS);
                Speech_to_text.setText(
                        Objects.requireNonNull(result).get(0));
            }
        }

    }
}