chatbotResponse.dart

void response(query) async {
    _textController.clear();
    df.AuthGoogle authGoogle =
        await df.AuthGoogle(fileJson: 'assets/credential-dialogflow.json').build();
    df.Dialogflow dialogflow =
        df.Dialogflow(authGoogle: authGoogle, sessionId: '123456');
    df.DetectIntentResponse response = await dialogflow.detectIntentFromText(query, "id");
    ChatMessage message = new ChatMessage(
      text: response.queryResult.fulfillmentText,
      name: 'Munaroh',
      type: false,
    );
    setState(() {
      _messages.insert(0, message);
    });
  }