new Padding(padding: new EdgeInsets.fromLTRB(10.0, 20.0, 10.0, 20.0), child: new Row( children: <Widget>[ new Expanded( child: new RaisedButton( onPressed: () {}, //通过控制边距来设置控件的高度 child: new Padding(padding: new EdgeInsets.fromLTRB(10.0, 10.0, 0.0, 10.0), child: new Text("AppBlog.CN"), ), color: Colors.deepOrange, ), ), ], ), ),