Flutter：尝试使某列在列中居中，但仍保持左对齐 [英] Flutter: Trying to bottom-center an item in a Column, but it keeps left-aligning

问题描述

我试图使小部件在列底部居中居中，但始终保持与左侧对齐。

I'm trying to bottom-center a widget at the bottom of a Column, but it keeps aligning to the left.

return new Column(
  new Stack(
    new Positioned(
      bottom: 0.0, 
      new Center(
        new Container(),
      ),
    ),
  ),
); 

已定位的存在会迫使容器向左移动而不是居中。但是，删除已定位将容器放在中间居中。

The existence of the Positioned forces the Container to the left, instead of centering. Removing the Positioned, however, puts the Container in the middle-center.

推荐答案

对齐要走的路是只有一个孩子。

Align is the way to go is you have only one child.

如果有更多内容，请考虑执行以下操作：

If you have more, consider doing something like this :

return new Column(
  crossAxisAlignment: CrossAxisAlignment.center,
  mainAxisSize: MainAxisSize.max,
  mainAxisAlignment: MainAxisAlignment.end,
  children: <Widget>[
      //your elements here
  ],
);

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