已指定命名参数'child'的参数

Question

我不能同时为floatbuttom放置图标和文本吗？标题中的错误。

    return new Scaffold(
        appBar: new AppBar(
          title: new Text('Hello'),
          backgroundColor: Colors.blue,
        ),
        body: new Container(
            padding: new EdgeInsets.all(22.0),
            child: new Column(
              children: <Widget>[
                new Text("it's working, $name"),
                new FlatButton(onPressed:()=> onClick('test'), child: new Icon(Icons.accessibility),child : new Text('data'))
              ],
            )));
  }
}

Answer 1

您的问题在FlatButton小部件内部

尝试这样

FlatButton.icon(
      icon: Icon(Icons.accessibility), //`Icon` to display
      label: Text('data'), //`Text` to display
      onPressed: () {
        //Code to execute when Button is clicked
        //...
      },
)