我正在制作具有背景形状的自定义工具栏,但是我的“后退”按钮可以正确对齐文本
Widget _toolBar(String headerText){
return Container(
decoration: BoxDecoration(
color: MyColors.greenHeader,
borderRadius: new BorderRadius.only(
bottomLeft: const Radius.circular(15.0),
bottomRight: const Radius.circular(15.0))
),
child:Center(child: Stack(
children: <Widget>[
Row(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Expanded(
flex: 1,
child:Text(headerText,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontSize: 18.0,
)
),),
],),
Row(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Flexible(
flex: 1,
child:IconButton(
icon: new Icon(Icons.arrow_back_ios),
color: Colors.white,
onPressed: (){},
)
),
],),
],
),)
);
}
上面的代码也尝试通过使用Row扩展而没有
stack
的情况,但文本对齐方式出错,导致文本无法到达其扩展小部件nreturn Scaffold(
body: Stack(
children: <Widget>[
Container(
decoration: _buildBackground(),
),
Column(
crossAxisAlignment: CrossAxisAlignment.stretch,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Expanded(
flex: 13,
child:_toolBar('VENUE LOGIN')
),
Expanded(
flex: 87,
child: Container(
child: LoginBody(),
),
)
],
)
],
),
);
最佳答案
您可以尝试将Text
和IconButton
小部件居中。
Stack(
children: <Widget>[
Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Expanded(
flex: 1,
child: Text(headerText,
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontSize: 18.0,
)),
),
],
),
),
Center(
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.max,
children: <Widget>[
Flexible(
flex: 1,
child: IconButton(
icon: new Icon(Icons.arrow_back_ios),
color: Colors.white,
onPressed: () {},
)),
],
),
),
],
),