SpeechToText

package com.example.rafaelrp.melo_birthday;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.speech.RecognitionListener;
import android.speech.RecognizerIntent;
import android.speech.SpeechRecognizer;
import android.support.v4.app.ActivityCompat;
import android.widget.Toast;

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

public class SpeechToText implements RecognitionListener {

    private SpeechRecognizer speech = null;
    private Intent recognizerIntent;
    private MainActivity mainActivity;
    private String text = "";
    private boolean isListening = false;
    private int MINIMUM_LENGTH_FOR_EXTRA_SPEECH_IN_MILLIS = 3000;
    private final backgroundVoiceListener backgroundListener;

    public boolean isListening() {
        return isListening;
    }

    public void setListening(boolean listening) {
        isListening = listening;
    }

    public  SpeechToText(MainActivity activity) {
        mainActivity = activity;
        backgroundListener = new backgroundVoiceListener();
        speech = SpeechRecognizer.createSpeechRecognizer(activity);
        speech.setRecognitionListener(this);
        recognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_PREFERENCE,Locale.getDefault());
        recognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE, activity.getPackageName());
        recognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
        recognizerIntent.putExtra(RecognizerIntent.EXTRA_PARTIAL_RESULTS, true);
        recognizerIntent.putExtra(RecognizerIntent.EXTRA_SPEECH_INPUT_MINIMUM_LENGTH_MILLIS, MINIMUM_LENGTH_FOR_EXTRA_SPEECH_IN_MILLIS);
        setListening(false);
    }

    @Override
    public void onReadyForSpeech(Bundle params) {

    }

    @Override
    public void onBeginningOfSpeech() {
        setListening(true);
    }

    @Override
    public void onRmsChanged(float rmsdB) {

    }

    @Override
    public void onBufferReceived(byte[] buffer) {

    }

    @Override
    public void onEndOfSpeech() {
        setListening(false);
    }

    @Override
    public void onError(int error) {
        mainActivity.setsubtitle(text);
    }

    @Override
    public void onResults(Bundle results) {

    }

    @Override
    public void onPartialResults(Bundle partialResults) {
        ArrayList<String> matches = partialResults
                .getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        text = "";
        if(matches!=null)
            for (String result : matches)
                text += result + "\n";
        mainActivity.setsubtitle(text);
        setListening(false);
    }

    @Override
    public void onEvent(int eventType, Bundle params) {

    }

    public void callBackgroundListener(){
        backgroundListener.run();
    }

    public class backgroundVoiceListener extends Thread{
        public void run(){
            try {
                this.sleep(2000);
                if(!isListening()){
                    setListening(true);
                    speech.startListening(recognizerIntent);
                    Toast.makeText(mainActivity,"Pode Falar", Toast.LENGTH_SHORT).show();
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
    }
}