用行
包裹工具栏小部件
....
Row toolbar = new Row(
children: <Widget>[
new Icon(Icons.arrow_back),
new Icon(Icons.menu),
new Expanded(child: new Text(widget.title)),
new Icon(Icons.arrow_forward)
]
);
return new Scaffold(
appBar: new AppBar(
title: toolbar,
),
....
这是结果