flutter - 如何在 RaisedButton 的右侧添加图标？

Question

如何将图标添加到右侧的 RaisedButton

Padding(
       padding: const EdgeInsets.only(top: 15.0),
          child: new SizedBox(
             width: double.infinity,
             child: new RaisedButton(
             textColor: Colors.white,
             color: coloraccent,
             onPressed: () {},
             child: const Text('UPADATE'),
        )),
       ),

Answer 1

你可以把你的RaisedButton.icon包裹起来到 Directionality小部件:

                    Directionality(
                      textDirection: TextDirection.rtl,
                      child: RaisedButton.icon(
                        onPressed: () {},
                        color: Colors.deepPurple,
                        icon: Icon(
                          Icons.arrow_drop_down,
                          color: Colors.white,
                        ),
                        label: Text(
                          "Category",
                          style: TextStyle(color: Colors.white),
                        ),
                      ),
                    )