如何使按钮的角仅在顶部变圆?

Ext*_*tra 3 dart flutter flutter-layout

我正在尝试制作一个按钮,该按钮的顶部为圆角,底部为正常角。我怎么能这样呢?

anm*_*ail 7

一般示例:

RaisedButton(
              onPressed: () {},
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.only(
                      topLeft: Radius.circular(15.0),
                      topRight: Radius.circular(15.0))),
              child: Text('Click Me!'),
              color: Colors.blueAccent,
              textColor: Colors.white,
            ),
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据每个pskink评论:

RaisedButton(
              onPressed: () {},
              shape: RoundedRectangleBorder(
                  borderRadius: BorderRadius.vertical(
                top: Radius.circular(15.0),
              )),
              child: Text('Click Me!'),
              color: Colors.blueAccent,
              textColor: Colors.white,
            ),
Run Code Online (Sandbox Code Playgroud)