如何在一行中添加 space (Flutter)?

How to add space in one row (Flutter)?

我是初学者。我有一排和 2 个按钮。我想在它们之间添加 space ,例如填充、边距、容器或其他东西。我尝试了很多其他问题的解决方案,但都不适合我。

我的代码:

   Row(
      children: <Widget>[
        Expanded(
            child: ElevatedButton(
          onPressed: () {},
          child: Text("Scan"),
        )),
        Expanded(
            child: ElevatedButton(
          onPressed: () {},
          child: Text("Manually"),
        )),
      ],
    );

使用SizedBox

Row(
  children: <Widget>[
    Expanded(
        child: ElevatedButton(
      onPressed: () {},
      child: Text("Scan"),
    )), 
    SizedBox(
      width: 100,
    ),
    Expanded(
      child: ElevatedButton(
      onPressed: () {},
      child: Text("Manually"),
    )),
  ],
);

您可以在要添加的按钮周围添加填充 space

Row(
            children: <Widget>[
              Expanded(
                  child: ElevatedButton(
                onPressed: () {},
                child: Text("Scan"),
              )),
              SizedBox(
                width: 100,
              ),
              Expanded(
                  child: Padding(
                    padding: const EdgeInsets.only(left:8.0),
                    child: ElevatedButton(
                onPressed: () {},
                child: Text("Manually"),
              ),
                  )),
            ],
          ),