如何在Flutter中删除AppBar前导图标周围的多余填充
问题内容:
在我的Flutter应用中,我有这个AppBar
Widget setAppBar(){
return new AppBar(
title: addAppBarTextWidget('Explore'),
elevation: 0.0,
leading: addLeadingIcon(),
actions: <Widget>[
addAppBarActionWidget(Constant.iconNotification, 22.0, 16.0, 8.0),
addAppBarActionWidget(Constant.iconProfile, 30.0, 30.0, 15.0)
],
);
}
Widget addLeadingIcon(){
return new Container(
height: 25.0,
width: 25.0,
padding: const EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 0.0),
margin: const EdgeInsets.fromLTRB(0.0, 0.0, 0.0, 0.0),
child: new Stack(
alignment: AlignmentDirectional.center,
children: <Widget>[
new Image.asset(
Constant.iconNotification,
width: 25.0,
height: 25.0,
),
new FlatButton(
onPressed: (){
onLeadingShowCategoryClick();
}
)
],
),
);
}
看起来像:
如您在AppBar上看到的那样,前导图标周围有一些额外的填充。如何删除此多余的填充。
问题答案:
您无法执行此操作,因为它是预定义的小部件。但是,您可以这样做:
appBar: AppBar(
automaticallyImplyLeading: false, // Don't show the leading button
title: Row(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
IconButton(
onPressed: () => Navigator.pop(context),
icon: Icon(Icons.arrow_back, color: Colors.white),
),
// Your widgets here
],
),
),
当automaticallyImplyLeading: true
皮领先的IconButton
,所以你可以添加自己的小部件。