Flutter APPbar 自定义icon
appBar: AppBar(title: Text("Home"),
leading: Builder
(
builder: (BuildContext context)
{
return IconButton(
icon: Image.asset("assets/images/category_selection_item3_ckecked.png"),
onPressed:()
{
Scaffold.of(context).openDrawer();
},
tooltip: MaterialLocalizations.of(context).openAppDrawerTooltip,//打开抽屉drawer
);
})),