如何设计适合没有Listview的所有屏幕的页面

Question

在我的代码中，我使用ListView进行滚动，并且只有在滚动时才能单击按钮。但是我真的需要不使用ListView就能适合任何大小屏幕的页面。

child: ListView(
        children: <Widget>[
          Column(
            mainAxisSize: MainAxisSize.max,
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: <Widget>[
              new Text(
                "Please enter the amount to withdraw from the account",
                style: TextStyle(fontSize: 23),
                textAlign: TextAlign.center,
              ),
              Padding(
                padding: EdgeInsets.only(top: 50.0,left: 80),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.start,
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: <Widget>[
                    Padding(
                      padding: EdgeInsets.only(top: 10.0,left: 30),
                    ),
                    new Text(
                      "Amount",
                      style: TextStyle(fontSize: 16),
                    ),
                    new Text(
                      "12,000.00",
                      style: TextStyle(fontSize: 20),
                    ),
                  ],
                ),
              ),

              Padding(
                padding: EdgeInsets.only(top: 230, bottom: 10.0),
                child: ButtonTheme(
                  minWidth: double.infinity,
                  height: 50.0,
                  child: RaisedButton(
                      color: Colors.black,
                     // padding: EdgeInsets.only(top: 15.0, bottom: 15.0),
                      textColor: Colors.white,
                      child: new Text(
                        "Transfer Now",
                        style: new TextStyle(fontSize: 15),
                      ),
                      onPressed: () {
                        setState(() {
                          Navigator.pushReplacement(
                              context, MaterialPageRoute(builder: (BuildContext context) => TransactionSPage()));
                        });
                      }),
                ),
              )
            ],
          ),
        ],
      ),

我需要使页面适合任何尺寸的屏幕，但是现在这是一个滚动页面