자식이 부모 state값 바꾸는 것 질문

[익명]

FloatingActionButton 누르고 '확인' 버튼을 눌러야 부모 state의 값이 +1 되는 게 정상인데요

FloatingActionButton 버튼을 누름과 동시에 부모 state 값이 올라가네요 

이유가 뭘까요?



--------코드--------

import 'package:flutter/material.dart';

void main() {
  runApp(const MaterialApp(
      home: MyApp()
  )
  );
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  var name = ['이모씨', '김모씨', '박모씨'];
  var a = 3;
  var total = 1;

  addTotal(){
    setState(() {
      total++;
    });
  }

  @override
  Widget build(BuildContext context) {

    return Scaffold(
          floatingActionButton: FloatingActionButton(
            child: Text('버튼'),
            onPressed: (){
              return showAboutDialog(
                context: context,
                children: [
                  DialogUI(total:total,addTotal:addTotal())
                ]
              );
            }
          ),
            appBar: AppBar(title: Text(total.toString()),),
            bottomNavigationBar: BottomAppBar(),
            body: ListView.builder(
                itemCount: 3,
                itemBuilder: (c,i){
                  return ListTile(
                    title: Text(name[i])
                  );
                },
            ),

        );

  }
}

class DialogUI extends StatelessWidget {
  const DialogUI({super.key, this.total, this.addTotal});
  final total;
  final addTotal;

  @override
  Widget build(BuildContext context) {
    return Dialog(
      child: SizedBox(
        width: 300,
        height: 300,
        child: Column(
          children: [
            TextField(),
            Row(
              children: [
                TextButton(
                  child: Text('확인'),
                  onPressed: (){
                    addTotal();
                  },
                ),
                TextButton(
                  child: Text('취소'),
                  onPressed: (){
                    Navigator.pop(context);
                  },

                ),
              ],
            )

          ],
        ),
      ),
    );
  }
}

[익명]

해결했습니다

[글쓴이]

글