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编辑:如果按下按钮,如何在我的课堂之外找到?

我尝试在 WaitForvalidation() 中使用带有 @override 的名为 isPressed 的方法,但是当我单击按钮时它总是返回“false”。这就像一个物体在推动之后被重新制作。

我的屏幕类:

class MyScreen extends StatelessWidget {

  CustomRaisedButton valButton = new CustomRaisedButton();


  @override
  Widget build (BuildContext context) {

    WaitForvalidation();

    return Container(
      child: valButton.build(context), // <--- Not sure that's legal...
    );

  }


  @override
  WaitForvalidation() {
    // <---- HERE, I Want to know if the button was pressed !
    if(valButton.isPressed())
      print("Button Pressed");
  }

}

我的按钮类:

class CustomRaisedButton extends StatelessWidget {

  bool _active = false;

  CustomRaisedButton();


  bool isPressed() {
    return _active
  }

  @override
  Widget build(BuildContext context) {

    return Container(

      padding: const EdgeInsets.only(bottom: 10),
      child:   RaisedButton(

        onPressed: () {
          _active = true;
        },

        child: Text(
          "Button",
        ),

      ),
    );
  }
}

谢谢 !

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