flutter dart List内の特定の値だけ更新したい

実現したいこと

発生している問題・分からないこと

Listのデータをwhereで検索し特定の値だけ更新したいが
List内の全てのデータが更新されてしまう問題を解決したいです

dart.padで実行できます
holeNo:1のplayerNo:1のスコアだけ更新したいのですが
playerNo:1のスコアがすべて更新されてしまいます。
解決方法はありますでしょうか？
よろしくお願いします。

該当のソースコード

dart
1void main() {
2  var scoreEntity = ScoreEntity();
3  List<PlayerDetail> playerList = [];
4    playerList.add(PlayerDetail(1,'いち',0,0,0));
5    playerList.add(PlayerDetail(2,'に',0,0,0));
6    playerList.add(PlayerDetail(3,'さん',0,0,0));
7    playerList.add(PlayerDetail(4,'し',0,0,0));
8  
9  
10  scoreEntity.addDetail(Detail(1,0,0,playerList));
11  scoreEntity.addDetail(Detail(2,0,0,playerList));
12  scoreEntity.addDetail(Detail(3,0,0,playerList));
13  scoreEntity.addDetail(Detail(4,0,0,playerList));
14  scoreEntity.addDetail(Detail(5,0,0,playerList));
15 
16
17  var detail = scoreEntity.detailList[0];
18  detail.playerList.firstWhere(
19              (player) => player.playerNo == 1).score = 1;
20     
21  
22  for(var detail in scoreEntity.detailList){
23    for(var player in detail.playerList){
24      print("holeNo:" + detail.holeNo.toString() + ", playerNo:" + player.playerNo.toString() +", name:" + player.playerName + ", score:" + player.score.toString());
25      
26      
27    }
28  }
29}
30
31
32class ScoreEntity {
33  
34  List<Detail> detailList = [];
35  
36  ScoreEntity();
37
38  void addDetail(Detail detail) {
39    detailList.add(detail);
40  }
41
42  // Getterメソッドを追加: currentHoleInfoプロパティ
43  
44}
45
46class Detail {
47  int holeNo = 0;
48  int par = 0;
49  int yard = 0;
50  List<PlayerDetail> playerList = [];
51
52  Detail(this.holeNo, this.par, this.yard, this.playerList);
53}
54
55class PlayerDetail {
56  int playerNo = 0;
57  String playerName = '';
58  int score = 0;
59  int putts = 0;
60  int teeOrder = 0;
61
62  PlayerDetail(this.playerNo, this.playerName, this.score, this.putts, this.teeOrder);
63}
64
65
66
67
68### 試したこと・調べたこと
69- [x] teratailやGoogle等で検索した
70- [x] ソースコードを自分なりに変更した
71- [ ] 知人に聞いた
72- [ ] その他
73
74##### 上記の詳細・結果
75実行結果
76holeNo:1, playerNo:1, name:いち, score:1
77holeNo:1, playerNo:2, name:に, score:0
78holeNo:1, playerNo:3, name:さん, score:0
79holeNo:1, playerNo:4, name:し, score:0
80holeNo:2, playerNo:1, name:いち, score:1
81holeNo:2, playerNo:2, name:に, score:0
82holeNo:2, playerNo:3, name:さん, score:0
83holeNo:2, playerNo:4, name:し, score:0
84holeNo:3, playerNo:1, name:いち, score:1
85holeNo:3, playerNo:2, name:に, score:0
86holeNo:3, playerNo:3, name:さん, score:0
87holeNo:3, playerNo:4, name:し, score:0
88holeNo:4, playerNo:1, name:いち, score:1
89holeNo:4, playerNo:2, name:に, score:0
90holeNo:4, playerNo:3, name:さん, score:0
91holeNo:4, playerNo:4, name:し, score:0
92holeNo:5, playerNo:1, name:いち, score:1
93holeNo:5, playerNo:2, name:に, score:0
94holeNo:5, playerNo:3, name:さん, score:0
95holeNo:5, playerNo:4, name:し, score:0
96
97
98
99### 補足
100特になし

行動規範の内容に同意します

回答1件

自己解決

void main() {
  var scoreEntity = ScoreEntity();
  List<PlayerDetail> playerList1 = [];
    playerList1.add(PlayerDetail(1,'1いち',0,0,0));
    playerList1.add(PlayerDetail(2,'1に',0,0,0));
    playerList1.add(PlayerDetail(3,'1さん',0,0,0));
    playerList1.add(PlayerDetail(4,'1し',0,0,0));
  
  List<PlayerDetail> playerList2 = [];
    playerList2.add(PlayerDetail(1,'2いち',0,0,0));
    playerList2.add(PlayerDetail(2,'2に',0,0,0));
    playerList2.add(PlayerDetail(3,'2さん',0,0,0));
    playerList2.add(PlayerDetail(4,'2し',0,0,0));
  
  List<PlayerDetail> playerList3 = [];
    playerList3.add(PlayerDetail(1,'3いち',0,0,0));
    playerList3.add(PlayerDetail(2,'3に',0,0,0));
    playerList3.add(PlayerDetail(3,'3さん',0,0,0));
    playerList3.add(PlayerDetail(4,'3し',0,0,0));
  
  List<PlayerDetail> playerList4 = [];
    playerList4.add(PlayerDetail(1,'4いち',0,0,0));
    playerList4.add(PlayerDetail(2,'4に',0,0,0));
    playerList4.add(PlayerDetail(3,'4さん',0,0,0));
    playerList4.add(PlayerDetail(4,'4し',0,0,0));
  
   List<PlayerDetail> playerList5 = [];
    playerList5.add(PlayerDetail(1,'5いち',0,0,0));
    playerList5.add(PlayerDetail(2,'5に',0,0,0));
    playerList5.add(PlayerDetail(3,'5さん',0,0,0));
    playerList5.add(PlayerDetail(4,'5し',0,0,0));
  
  
  scoreEntity.addDetail(Detail(1,0,0,playerList1));
  scoreEntity.addDetail(Detail(2,0,0,playerList2));
  scoreEntity.addDetail(Detail(3,0,0,playerList3));
  scoreEntity.addDetail(Detail(4,0,0,playerList4));
  scoreEntity.addDetail(Detail(5,0,0,playerList5));
 
//   scoreEntity.detailList[3].playerList[3].score = 1;
  var detail = scoreEntity.detailList[3];
  detail.playerList.firstWhere(
              (player) => player.playerNo == 3).score = 1;
     
  
  for(var detail in scoreEntity.detailList){
    for(var player in detail.playerList){
      print("holeNo:" + detail.holeNo.toString() + ", playerNo:" + player.playerNo.toString() +", name:" + player.playerName + ", score:" + player.score.toString());
      
      
    }
  }
}


class ScoreEntity {
  
  List<Detail> detailList = [];
  
  ScoreEntity();

  void addDetail(Detail detail) {
    detailList.add(detail);
  }

  // Getterメソッドを追加: currentHoleInfoプロパティ
  
}

class Detail {
  int holeNo = 0;
  int par = 0;
  int yard = 0;
  List<PlayerDetail> playerList = [];

  Detail(this.holeNo, this.par, this.yard, this.playerList);
}

class PlayerDetail {
  int playerNo = 0;
  String playerName = '';
  int score = 0;
  int putts = 0;
  int teeOrder = 0;

  PlayerDetail(this.playerNo, this.playerName, this.score, this.putts, this.teeOrder);
}

playerListを初期化する必要がありました。

投稿2024/01/31 15:53

ry0559

総合スコア24