flutter 中保持元素间距的几种方法

Row(
  children: <Widget>[
    Text("1"),
    SizedBox(width: 50), // 50宽度
    Text("2"),
  ],
)

Row(
  children: <Widget>[
    Text("1"),
    Spacer(), // use Spacer
    Text("2"),
  ],
)

Row(
  mainAxisAlignment: MainAxisAlignment.spaceEvenly, //元素与空白互相间隔
  children: <Widget>[
    Text("1"),
    Text("2"),
  ],
)

Wrap(
  spacing: 100, // set spacing here
  children: <Widget>[
    Text("1"),
    Text("2"),
  ],
)

Wrap(
  alignment: WrapAlignment.spaceAround, // 空白包围住元素
  children: <Widget>[
    Text("1"),
    Text("2"),
  ],
)