구글 TTS STT 가 됬었는대 갑자기 안되요..

Question

public class TTSSTT extends AppCompatActivity implements TextToSpeech.OnInitListener {
    EditText edit;
    Button button;
    TextView txtSpeechInput;
    ImageButton btnSpeak;
    private TextToSpeech myTTS;
    private final int REQ_CODE_SPEECH_INPUT = 100;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.ttsstt);
        setTitle("TTS/STT");
        myTTS=new TextToSpeech(getApplicationContext(),this);
        edit=(EditText)findViewById(R.id.edit);
        button=(Button)findViewById(R.id.button);
        txtSpeechInput=(TextView)findViewById(R.id.txtSpeechInput);
        btnSpeak=(ImageButton)findViewById(R.id.btnSpeak);

        btnSpeak.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                promptSpeechInput();

            }
        });
        button.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String str=txtSpeechInput.getText().toString();
                myTTS.speak(str,TextToSpeech.QUEUE_FLUSH,null);

            }

        });
    }
    @Override
    public void onInit(int i) {
    }
    private void  promptSpeechInput(){
        Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        //사용자의 음성 입력을 받아서 동일한 활동으로 반환
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
                RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        intent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault());
        intent.putExtra(RecognizerIntent.EXTRA_PROMPT,getString(R.string.speech_prompt));
        try {
            startActivityForResult(intent, REQ_CODE_SPEECH_INPUT);
        } catch (ActivityNotFoundException a) {
            Toast.makeText(getApplicationContext(),
                    getString(R.string.speech_not_supported),
                    Toast.LENGTH_SHORT).show();
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case REQ_CODE_SPEECH_INPUT: {
                if (resultCode == RESULT_OK && null != data) {

                    ArrayList<String> result = data
                            .getStringArrayListExtra(RecognizerIntent.EXTRA_RESULTS);

                    txtSpeechInput.setText(result.get(0));
                    edit.setText(result.get(0));
                }
                break;
            }

        }
    }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }
    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
}