有人知道我为什么会在标题中出现这个错误吗？我真的很难从dialogflow api得到回复来制作我的聊天机器人。这是我的密码：
主活动.java

public class MainActivity extends AppCompatActivity {

private final int USER = 0;
private final int BOT = 1;

SessionsClient sessionsClient;
SessionName sessionName;
UUID uuid;
private EditText editText;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    uuid = UUID.randomUUID();
    editText = findViewById(R.id.edittext_chatbox);
    FloatingActionButton btn = findViewById(R.id.send_button);
    btn.setOnClickListener(v -> sendMsg());
    initBob();
}

private void initBob() {
    try {
        InputStream stream = getResources().openRawResource(R.raw.bob_credentials);
        GoogleCredentials cred = GoogleCredentials.fromStream(stream);
        String pID = ((ServiceAccountCredentials) cred).getProjectId();
        SessionsSettings.Builder settingBuilder = SessionsSettings.newBuilder();
        SessionsSettings sessionsSettings = settingBuilder.setCredentialsProvider(FixedCredentialsProvider.create(cred)).build();
        sessionsClient = SessionsClient.create(sessionsSettings);
        sessionName = SessionName.of(pID, uuid.toString());
    } catch (IOException e) {
        e.printStackTrace();
    }
}
@SuppressWarnings("deprecation")
private void sendMsg() {
    String msg = editText.getText().toString();
    if (msg.trim().isEmpty()) {
        Toast.makeText(MainActivity.this, "Please enter a message", Toast.LENGTH_LONG).show();
    } else {
        showTextView(msg, USER);
        editText.setText("");
        QueryInput queryInput = QueryInput.newBuilder().setText(TextInput.newBuilder().setText(msg).setLanguageCode("en-US")).build();
        new Request(MainActivity.this, sessionName, sessionsClient, queryInput).execute();
    }
}

private void showTextView(String message, int type) {
    LinearLayout chatLayout = findViewById(R.id.chat_layout);
    FrameLayout layout;
    switch (type) {
        case USER:
            layout = getUserLayout();
            break;
        default:
            layout = getBotLayout();
            break;
    }
    layout.setFocusableInTouchMode(true);
    chatLayout.addView(layout);
    TextView tv = layout.findViewById(R.id.chat_msg);
    tv.setText(message);
    layout.requestFocus();
    editText.requestFocus();
    Date date = new Date(System.currentTimeMillis());
    SimpleDateFormat dateFormat = new SimpleDateFormat("hh:mm aa",
            Locale.ENGLISH);
    String time = dateFormat.format(date);
    TextView timeTextView = layout.findViewById(R.id.message_time);
    timeTextView.setText(time);
}

public void callBack(DetectIntentResponse response) {
    if (response != null){
        String botReply = response.getQueryResult().getFulfillmentText();
        showTextView(botReply, BOT);
    }
    else{
        showTextView("wot", BOT);
    }
}

FrameLayout getUserLayout() {
    LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
    return (FrameLayout) inflater.inflate(R.layout.human_message, null);
}

FrameLayout getBotLayout() {
    LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
    return (FrameLayout) inflater.inflate(R.layout.bot_message, null);
     }
}

请求.java

@SuppressWarnings("deprecation")
public class Request extends AsyncTask<Void,Void, DetectIntentResponse> {

Activity activity;
SessionName session;
SessionsClient sessionsClient;
QueryInput queryInput;

Request(Activity activity, SessionName session, SessionsClient sessionsClient, QueryInput queryInput) {
    this.activity = activity;
    this.session = session;
    this.sessionsClient = sessionsClient;
    this.queryInput = queryInput;
}
@Override
protected DetectIntentResponse doInBackground(Void... voids) {
    try{
        DetectIntentRequest detectIntentRequest = DetectIntentRequest.newBuilder()
                .setSession(session.toString())
                .setQueryInput(queryInput)
                .build();
        return  sessionsClient.detectIntent(detectIntentRequest);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return null;
}
@Override
protected void onPostExecute(DetectIntentResponse response){
    ((MainActivity) activity).callBack(response);
}
}

它看起来像googlecredentials cred=googlecredentials.fromstream（stream）；而随机uuid（）就是问题所在？我不确定。