chatbot_flutter_dashchat.dart

@override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text("Chat App"),
        ),
        body: DashChat(
          inverted: false,
          onSend: onSend,
          sendOnEnter: true,
          textInputAction: TextInputAction.send,
          user: user,
          inputDecoration:
              InputDecoration.collapsed(hintText: "Digite a mensagem aqui..."),
          dateFormat: DateFormat('dd-MMM-yyyy'),
          timeFormat: DateFormat('HH:mm'),
          messages: messages,
          showUserAvatar: false,
          showAvatarForEveryMessage: false,
          scrollToBottom: true,
          inputMaxLines: 5,
          messageContainerPadding: EdgeInsets.only(left: 5.0, right: 5.0),
          alwaysShowSend: true,
          inputTextStyle: TextStyle(fontSize: 16.0),
          inputContainerStyle: BoxDecoration(
            border: Border.all(width: 0.0),
            color: Colors.white,
          ),
        ));
  }