Flutter 如何在颤振中对齐扁平按钮？

我想知道如何在颤振中对齐按钮。我是个新手，对于我目前的代码，我无法插入任何行、列或包装。我想在一个垂直的方式对齐我的按钮，但其当前水平对齐，并给我一个权利溢出256像素显示错误

                  return showDialog<void>(
                      context: context,
                      builder: (BuildContext context) {
                        return AlertDialog(
                          content: Text("You have $counts routes!"),
                          actions: <Widget>[
                            new FlatButton(
                              textColor: Colors.black,
                              padding:
                                  EdgeInsets.fromLTRB(20, 0, 0, 10),
                              child: Text(
                                  "This is route 1! \n" +
                                      rList[0] + "\n"),
                              onPressed: () {},
                            ),
                            new FlatButton(
                              textColor: Colors.black,
                              padding:
                                  EdgeInsets.fromLTRB(20, 0, 0, 10),
                              child: Text(
                                  "This is your second route! \n" +
                                      rList[1] + "\n"),
                              onPressed: () {},
                            ),
                          ],
                        );
                      });

只需将按钮添加到列中即可

只需将按钮添加到列中即可

您可以使用来自动逐行同步

检查下面的ListView示例。您应该将其粘贴到代码的正文部分

//some of codes..

    body: Padding(
      padding: EdgeInsets.only(top: 15, left: 15, right: 15),
      child: ListView(
        children: <Widget>[ 
          RaisedButton(
            child: Text("Confirm"),
            color: Colors.lightGreen,
            elevation: 5.0,
            onPressed: () {
              save(1,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Cancel"),
            color: Colors.redAccent,
            elevation: 5.0,
            onPressed: () {
              save(0,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Pass"),
            color: Colors.yellowAccent,
            elevation: 5.0,
            onPressed: () {
              save(2,context);
              /*  some of codes */
            },
          ),
        ],
      ),
    ));

您可以使用来自动逐行同步

检查下面的ListView示例。您应该将其粘贴到代码的正文部分

//some of codes..

    body: Padding(
      padding: EdgeInsets.only(top: 15, left: 15, right: 15),
      child: ListView(
        children: <Widget>[ 
          RaisedButton(
            child: Text("Confirm"),
            color: Colors.lightGreen,
            elevation: 5.0,
            onPressed: () {
              save(1,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Cancel"),
            color: Colors.redAccent,
            elevation: 5.0,
            onPressed: () {
              save(0,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Pass"),
            color: Colors.yellowAccent,
            elevation: 5.0,
            onPressed: () {
              save(2,context);
              /*  some of codes */
            },
          ),
        ],
      ),
    ));

---

您好，谢谢您的及时回复！现在它已经对齐了，我如何按左边的按钮？这是我当前的样子，我想把它与第一条语句对齐@永远不要尝试更改crossAxisAlignment:crossAxisAlignment。start@nevertoolateyet尝试将按钮移动到内容。请看我的例子嗨谢谢你的及时回复！现在它已经对齐了，我如何按左边的按钮？这是我当前的样子，我想把它与第一条语句对齐@永远不要尝试更改crossAxisAlignment:crossAxisAlignment。start@nevertoolateyet尝试将按钮移动到内容。请看我的例子

//some of codes..

    body: Padding(
      padding: EdgeInsets.only(top: 15, left: 15, right: 15),
      child: ListView(
        children: <Widget>[ 
          RaisedButton(
            child: Text("Confirm"),
            color: Colors.lightGreen,
            elevation: 5.0,
            onPressed: () {
              save(1,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Cancel"),
            color: Colors.redAccent,
            elevation: 5.0,
            onPressed: () {
              save(0,context);
              /*  some of codes */
            },
          ),
          RaisedButton(
            child: Text("Pass"),
            color: Colors.yellowAccent,
            elevation: 5.0,
            onPressed: () {
              save(2,context);
              /*  some of codes */
            },
          ),
        ],
      ),
    ));