IconButton的颜色不变(颤动)

时间:2020-09-09 09:28:53

标签: flutter iconbutton

我有一个用于密码字段的TextField小部件和一个用于显示/隐藏密码的IconButton。我想要的是,当用户点击IconButton时,它应该更改颜色。实际上,当我在单击IconButton之前和之后运行print(showPassWordIconColor)时,它的值会更改。但是,它不会显示更改的颜色。 我看到了其他一些问题及其答案,并尝试了它们,但仍然遇到相同的问题。 这是完整的小部件。 (最初是showPasswordIconColor = Colors.grey)

Widget passwordField = AppTextFormField(
  obscureText: !_showPassword,
  decoration: InputDecoration(
    hintText: "Password",
    border: OutlineInputBorder(),
    suffixIcon: IconButton(
      icon: Icon(
        Icons.remove_red_eye,
        color: showPasswordIconColor,
      ),
      onPressed: () {
        setState(() {
          _showPassword = !_showPassword;
          if (showPaswswordIconColor == Colors.grey) {
            showPaswswordIconColor = buttonColor;
          } else {
            showPaswswordIconColor = Colors.grey;
          }
          print(showPaswswordIconColor);
        });
      },
    ),
  ),
);

1 个答案:

答案 0 :(得分:0)

enter image description here,请检查以下代码。

然后使用下面的代码。

Container(
            width: 200,
            height: 200,
            child: TextFormField(
              obscureText: !_showPassword,
              decoration: InputDecoration(
                hintText: "Password",
                border: OutlineInputBorder(),
                suffixIcon: IconButton(
                  icon: Icon(
                    Icons.remove_red_eye,
                    color: showPasswordIconColor,
                  ),
                  onPressed: () {
                    setState(() {
                      _showPassword = !_showPassword;
                      if (showPasswordIconColor == Colors.grey) {
                        showPasswordIconColor = Colors.red;
                      } else {
                        showPasswordIconColor = Colors.grey;
                      }
                      print(showPasswordIconColor);
                    });
                  },
                ),
              ),
            ),
          )