package com.example.speechtotext;

import android.Manifest;

import android.content.pm$.$PackageManager;

import android.os$.$Bundle;

import android.content.Intent;

import android.speech.RecognitionListener;

import android.speech.RecognizerIntent;

import android.speech.SpeechRecognizer;

import android.widget.Button;

import android.widget.TextView;

import androidx.annotation.NonNull;

import androidx.appcompat.app.AppCompatActivity;

import androidx.core.app.ActivityCompat;

import androidx.core.content.ContextCompat;

import android.media.MediaPlayer;

import java.io$.$IOException;

import java.util.ArrayList;

import java.util.Locale;

import android.util.Log;

import android.content.res.AssetFileDescriptor;

import android.content.res.AssetManager;

public class MainActivity extends AppCompatActivity $\{$

TextView transcriptionTextView;

SpeechRecognizer speechRecognizer;

Intent speechRecognizerIntent;

MediaPlayer mediaPlayer;

@Override

protected void onCreate$($Bundle savedInstanceState$)\{$

super.onCreate$($savedInstanceState$)$;

setContentView$($R$.$layout.activity$\_$main$)$;

transcriptionTextView $=$ findViewById$($R$.$id$.$transcriptionTextView$)$;

speechRecognizer $=$ SpeechRecognizer.createSpeechRecognizer$($this$)$;

speechRecognizerIntent $=$ new Intent$($RecognizerIntent$.$ACTION$\_$RECOGNIZE$\_$SPEECH$)$;

speechRecognizerIntent.putExtra$($RecognizerIntent$.$EXTRA$\_$LANGUAGE$\_$MODEL, RecognizerIntent.LANGUAGE$\_$MODEL$\_$FREE$\_$FORM$)$;

speechRecognizerIntent.putExtra$($RecognizerIntent$.$EXTRA$\_$LANGUAGE, Locale.getDefault$())$;

speechRecognizer.setRecognitionListener$($new RecognitionListener$()\{$

@Override

public void onReadyForSpeech$($Bundle params$)\{\}$

@Override

public void onBeginningOfSpeech$()\{\}$

@Override

public void onRmsChanged$($float rmsdB$)\{\}$

@Override

public void onBufferReceived$($byte$[]$ buffer$)\{\}$

@Override

public void onEndOfSpeech$()\{\}$

@Override

public void onError$($int error$)\{\}$

@Override

public void onResults$($Bundle results$)\{$

ArrayList matches $=$ results.getStringArrayList$($SpeechRecognizer$.$RESULTS$\_$RECOGNITION$)$;

if $($matches $!=$ null && $!$matches.isEmpty$())\{$

String recognizedText $=$ matches.get$(0)$;

Log.d$("$SpeechRecognition$",$ "Recognized text: $"+$ recognizedText$)$;

transcriptionTextView.setText$($recognizedText$)$;

$\}$

$\}$

@Override

public void onPartialResults$($Bundle partialResults$)\{\}$

@Override

public void onEvent$($int eventType, Bundle params$)\{\}$

$\})$;

Button startButton $=$ findViewById$($R$.$id$.$startButton$)$;

Button stopButton $=$ findViewById$($R$.$id$.$stopButton$)$;

Button playButton $=$ findViewById$($R$.$id$.$playButton$)$;

startButton.setOnClickListener$($v $->$ startRecording$())$;

stopButton.setOnClickListener$($v $->$ stopRecording$())$;

playButton.setOnClickListener$($v $->$ startPlayback$())$;

mediaPlayer $=$ new MediaPlayer$()$;

$\}$

private void startRecording$()\{$

if $($ContextCompat$.$checkSelfPermission$($this$,$ Manifest.permission.RECORD$\_$AUDIO$)$

$==$ PackageManager.PERMISSION$\_$GRANTED$)\{$

speechRecognizer.startListening$($speechRecognizerIntent$)$;

$\}$ else $\{$

ActivityCompat.requestPermissions$($this$,$ new String$[]\{$Manifest$.$permission.RECORD$\_$AUDIO$\},1)$;

$\}$

$\}$

private void stopRecording$()\{$

speechRecognizer.stopListening$()$;

$\}$

private void startPlayback$()\{$

try $\{$

AssetManager assetManager $=$ getAssets$()$;

AssetFileDescriptor descriptor $=$ assetManager.openFd$("$audio$\_$sample.amr"$)$;

mediaPlayer.setDataSource$($descriptor$.$getFileDescriptor$(),$ descriptor.getStartOffset$(),$ descriptor.getLength$())$;

mediaPlayer.prepare$()$;

mediaPlayer.start$()$;

$\}$ catch $($IOException e$)\{$

Log.e$("$MainActivity$",$ "Error starting playback", e$)$;

$\}$

$\}$

@Override

public void onRequestPermissionsResult$($int requestCode, @NonNull String$[]$ permissions, @NonNull int$[]$ grantResults$)\{$

super.onRequestPermissionsResult$($requestCode$,$ permissions, grantResults$)$;

if $($requestCode $==1)\{$

if $($grantResults$.$length $>0$ && grantResults$[0]==$ PackageManager.PERMISSION$\_$GRANTED$)\{$

startRecording$()$;

$\}$

$\}$

$\}$

@Override

protected void onDestroy$()\{$

super.onDestroy$()$;

if $($mediaPlayer $!=$ null$)\{$

mediaPlayer.release$()$;

$\}$

$\}$

$\}$ this is my mainactivity.java code for speechtotext application in android studio, but I am unable to see the transcription of the audio file when it is played $,$ kindly help me with this and make the necessay changes in this code to get the transcription of the audio and make this code unique and error free with explnation so that I can get the desired output