我们来看一个代码

Column(
              children: [
                ...transaction.map((e) => Card(
                  child:Row(
                    children: [
                      Container(child: Text(e.amout.toString()),),
                      Column(
                        children: [
                          Text(e.title),
                          Text(e.date.toString()),
                        ],
                      )
                    ],
                  ),
                )).toList()
              ],
            )

看看效果

感觉很不好

我们要去美化一下container

• symmetric({vertical, horizontal})：用于设置对称方向的填充，vertical指top和bottom，horizontal指left和right。

另外，首先我们要了解可以通过container来设置边距和边框，可以在Text的stytle中来设置美化样式，对于Column 中可以设置对称轴的对齐方式

我们来看看代码

Column(
              children: [
                ...transaction
                    .map((e) => Card(
                          child: Row(
                            children: [
                              Container(
                                padding: EdgeInsets.all(10),
                                child: Text(
                                  e.amout.toString(),
                                  style: TextStyle(
                                      fontWeight: FontWeight.bold,
                                      fontSize: 16,
                                      color: Colors.purple),
                                ),
                                margin: EdgeInsets.symmetric(
                                    vertical: 10, horizontal: 15),
                                decoration: BoxDecoration(
                                    border: Border.all(
                                        color: Colors.purple, width: 2)),
                              ),
                              Column(
                                crossAxisAlignment: CrossAxisAlignment.start,
                                children: [
                                  Text(e.title,
                                  style: TextStyle(
                                    fontSize: 10,
                                    color: Colors.grey
                                  ),),
                                  Text(e.date.toString()),
                                ],
                              )

效果如下：

对于价钱的格式我们可以借助

Text(
                                  "\$${e.amout}",
                                  style: TextStyle(
                                      fontWeight: FontWeight.bold,
                                      fontSize: 16,
                                      color: Colors.purple),
                                ),

来实现相同的效果

我们看看最后的美化代码

Column(
              children: [
                ...transaction
                    .map((e) => Card(
                          child: Row(
                            children: [
                              Container(
                                padding: EdgeInsets.all(10),
                                child: Text(
                                  "\$${e.amout}",
                                  style: TextStyle(
                                      fontWeight: FontWeight.bold,
                                      fontSize: 16,
                                      color: Colors.purple),
                                ),
                                margin: EdgeInsets.symmetric(
                                    vertical: 10, horizontal: 15),
                                decoration: BoxDecoration(
                                    border: Border.all(
                                        color: Colors.purple, width: 2)),
                              ),
                              Column(
                                crossAxisAlignment: CrossAxisAlignment.start,
                                children: [
                                  Text(
                                    e.title,
                                    style: TextStyle(
                                        fontSize: 10, color: Colors.grey),
                                  ),
                                  Text(DateFormat().format(e.date)),
                                ],
                              )
                            ],
                          ),
                        ))
                    .toList()
              ],
            )