错误:未为类'_HomeState'定义了setter'pressed'

问题描述 投票:0回答:1

因此,我正在尝试为人们单击按钮时创建一种样式,它将更改其颜色。我有一个单独的函数可以在其中创建按钮,因此我将其称为函数来创建它们。但是当我传递一个布尔变量时,主函数似乎并不接受该变量(布尔)。它一直以红色突出显示,并为我提供了此设置。未为类“ _HomeState”定义“按下”设置程序这是创建按钮功能:

class CustomButton extends StatelessWidget {
// define this parameters as you will need them
final Function onPressed;
final IconData icon;
final String text;
final String text2;
final bool pressed;

// define a constructor for the class custom button
CustomButton({this.onPressed, this.icon, this.text, this.text2, this.pressed});

@override
Widget build(BuildContext context) {
return ClipRRect(
  borderRadius: BorderRadius.circular(10),
  child: SizedBox(
    width: 90.0,
    height: 90.0,
    child: RaisedButton(
      // remove the default padding the raised button has
      padding: EdgeInsets.zero,
      onPressed: () {},
      color: Colors.grey,
      child: Column(
        mainAxisAlignment: MainAxisAlignment.start,
        children: <Widget>[
          Row(
            children: <Widget>[
              Padding(
                padding: EdgeInsets.only(top: 5, right: 25, bottom: 10),
                child: Icon(
                  icon,
                  size: 35,
                ),
              ),
              Padding(
                padding: EdgeInsets.only(
                    top: 0, right: 0, bottom: 20, left: 0),
                child: new Text(
                  text,
                ),
              ),
            ],
          ),
          Padding(
            padding: EdgeInsets.only(top: 8, right: 17),
            child: Text(
              text2,
              style: TextStyle(fontSize: 13),
            ),
          ),
        ],
      ),
    ),
  ),
);
}
}

这里是我调用CustomButton()时的主要功能:

CustomButton(
          icon: Icons.lightbulb_outline,
          text: 'On',
          text2: 'Lâmpada 1\nSchuma',
          pressed: false,
          onPressed: () => (){
          setState(() {
          pressed = !pressed; <- THis stay highlighted in red
   });
},
),
flutter flutter-layout
1个回答
0
投票

这意味着您正在尝试将pressed值分配给pressed,但未在_HomeState类中定义。

在_H​​omeState类中,没有按下任何变量。

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