How to hide toast message “Your audio will be sent to google to provide speech recognition service.” in Android?

Question

I am using google speech recognizer for integrating voice services in Android but while pressing on mic button this annoying toast message is showing. Please suggest me a way to

Answer 1

You can make a custom speech recogniser which will give you more control over the UI. MainActivity opens a new DialogFragment which implements RecognitionListener .

public class MainActivity extends AppCompatActivity implements VoiceRecognizerInterface {
    Button button ;
    TextView textView;
    String string;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        button = findViewById(R.id.button);
        textView = findViewById(R.id.textView);
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                FragmentManager fragmentManager = getSupportFragmentManager();
                if (fragmentManager != null && fragmentManager.findFragmentByTag("dialogVoiceRecognizer") == null && !isFinishing()) {
                    VoiceRecognizerDialogFragment languageDialogFragment = new VoiceRecognizerDialogFragment(MainActivity.this,MainActivity.this);
                    languageDialogFragment.show(fragmentManager, "dialogVoiceRecognizer");
                }
            }
        });
    }

    @Override
    public void spokenText(String spokenText) {
        textView.setText(spokenText);
    }
}

An interface to signal the main activity after stt.

public interface VoiceRecognizerInterface {
    void spokenText(String spokenText);
}

The custom SpeechToText Dialog.

public class VoiceRecognizerDialogFragment extends DialogFragment implements RecognitionListener{

    ImageView micImage;
    TextView stateTV;
    TextView displayTV;

    private SpeechRecognizer mSpeechRecognizer;
    private Intent mSpeechRecognizerIntent;
    private Context context;
    VoiceRecognizerInterface signal;

    @SuppressLint("ValidFragment")
    public VoiceRecognizerDialogFragment(Context context, VoiceRecognizerInterface signal) {
        this.context = context;
        this.signal = signal;
    }

    public VoiceRecognizerDialogFragment(){

    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.voice_recognizer_custom_layout ,container, false );

        //Mic tap to listen again
        micImage = view.findViewById(R.id.micImageView);
        //Displays Listening.. when recognizer is listening
        stateTV = view.findViewById(R.id.stateTV);
        //Displays message if error
        displayTV = view.findViewById(R.id.displayTV);

        mSpeechRecognizer = SpeechRecognizer.createSpeechRecognizer(context);
        mSpeechRecognizerIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_WEB_SEARCH);
        //Customize language by passing language code
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE,"en");
        //To receive partial results on the callback
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_PARTIAL_RESULTS,true);
        mSpeechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
                context.getPackageName());
        mSpeechRecognizer.setRecognitionListener(this);
        mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
        micImage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startListening();
            }
        });
        return view;

    }

    public void startListening(){
        mSpeechRecognizer.setRecognitionListener(this);
        mSpeechRecognizer.startListening(mSpeechRecognizerIntent);
        changeUIStateToListening();
    }


    @Override
    public void onDestroy() {
        super.onDestroy();
        if (mSpeechRecognizer != null) {
            mSpeechRecognizer.destroy();
        }
    }

    @Override
    public void onBeginningOfSpeech()
    {
    }

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

    }

    @Override
    public void onEndOfSpeech()
    {
    }

    @Override
    public void onError(int error)
    {
        if(error == 7){
           changeUIStateToRetry();
        }
    }

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

    }

    @Override
    public void onPartialResults(Bundle partialResults) {
    }

    @Override
    public void onReadyForSpeech(Bundle params)
    {

    }

    @Override
    public void onResults(Bundle results)
    {
        ArrayList<String> matches = results.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION);
        if(matches == null){
            return;
        }
        int i =0;
        String first ="";
        for(String s : matches){
            if(i==0){
                first = s;
            }
            i++;
        }
        // sending text to MainActivity using Interface
        signal.spokenText(first);
        this.dismiss();
    }

    @Override
    public void onRmsChanged(float rmsdB)
    {
    }

    public void changeUIStateToListening(){
        displayTV.setText("Tell us what you need");
        stateTV.setText("Listening...");
    }

    public void changeUIStateToRetry(){
        displayTV.setText("Didn't catch that. Try\nSpeaking again");
        stateTV.setText("Tap on mic to try again");
    }
}

Answer 2

Based on android regulations you cannot hide system toast messages as you don't have the accesses to the system View,

only in jailbrake android where you have access to the terminal you can try to do that.