Flutter:如何使按钮扩展到其父级的大小? [英] Flutter: How to make a button expand to the size of its parent?

问题描述

我正在尝试创建方形按钮，但 Expanded 似乎与容器的工作方式不同.以如下代码为例

I am trying to create square buttons, but Expanded doesn't seem to work the same as it does with containers. Take the following code for example

new Expanded(
 flex: 2,
   child: new Column(
     children: <Widget>[
       new Expanded(
         child:new Row(
           children: <Widget>[
             new Expanded(child: new MaterialButton(...)),
             new Expanded(child: new MaterialButton(....)),

             new Expanded(child: new Container(color: Colors.red)),
             new Expanded(child: new Container(color: Colors.green)),
           ]
         )
       )
     ],
   )
 )

 ....

它显示两个水平展开但不垂直展开的按钮.同时，容器将水平和垂直扩展.如果我执行以下操作，也会出现同样的效果:

It displays two buttons that are expanded horizontally, but not vertically. At the same time the containers will expand both horizontally and vertically. The same effect occurs if I do the following:

new Expanded(
 flex: 2,
   child: new Column(
     children: <Widget>[
       new Expanded(
         child:new Column(
           children: <Widget>[
             new Expanded(child: new MaterialButton(...)),
             new Expanded(child: new MaterialButton(....)),

             new Expanded(child: new Container(color: Colors.red)),
             new Expanded(child: new Container(color: Colors.green)),
           ]
         )
       )
     ],
   )
 )

 ....

我将行更改为列的位置.按钮将垂直扩展，但不会水平扩展，而容器将同时进行.

Where I've changed the Row to Column. The buttons will expand vertically, but not horizontally, while the containers will do both.

有没有办法让我的按钮在垂直和水平方向上展开以适应其父级?

Is there a way have my buttons expand to fit their parent both vertically and horizontally?

推荐答案

将 crossAxisAlignment 属性添加到您的 Row;

Add the crossAxisAlignment property to your Row;

crossAxisAlignment: CrossAxisAlignment.stretch

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