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Flutter 颤振:将布尔值更改为true onPressed_Flutter_Dart_Boolean - Fatal编程技术网

Flutter 颤振:将布尔值更改为true onPressed

Flutter 颤振:将布尔值更改为true onPressed,flutter,dart,boolean,Flutter,Dart,Boolean,我对颤振还不熟悉,不明白为什么我的布尔变量clickedLike没有变为true 我在我的列之外声明它,在StatefulWidget类中初始值为false IconButton( onPressed: () async { setState(() { likeColor = Colors.blue; i

我对颤振还不熟悉,不明白为什么我的布尔变量clickedLike没有变为true

我在我的列之外声明它,在StatefulWidget类中初始值为false

              IconButton(
                  onPressed: () async {
                    setState(() {
                      likeColor = Colors.blue;

                      if (clickedLike == false) {
                        numLikes++;
                        FirebaseFirestore.instance
                            .collection('board')
                            .doc(docID)
                            .update({'likes': numLikes});
                        clickedLike = true;
                      } else {}
                    });
                  },
                  icon: Icon(Icons.thumb_up, color: likeColor)
                  //color: Colors.blue,
                  ),
我省略了其余的小部件,因为它们是不相关的。任何帮助都将不胜感激。谢谢

if (!clickedLike) {
                        numLikes++;
                        FirebaseFirestore.instance
                            .collection('board')
                            .doc(docID)
                            .update({'likes': numLikes});
                        clickedLike = !clickedLike;
                      }

试试这个?

我觉得clickedLike不是布尔值。在代码中,您将比较clickedLike==0和clickedLike++。它不是int吗?@ObjectJosh已将其更改为反映我当前的代码-clickedLike是一个布尔值