我是新来的 flutter 。寻求帮助。我想知道为什么我的扩展容器不能扩展到屏幕末端。
Widget build(BuildContext context) {
return Scaffold(
body:
Container(
color: Colors.white,
child: Stack(
children: <Widget>[
Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisAlignment: MainAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Container(
color: Colors.white,
height: 300.0,//350.0,
width: double.infinity,
child: Image.asset(
'Images/waves.png',
fit: BoxFit.fill,
),
),
SizedBox(height: 5,),
],
),
Container(
child:FutureBuilder<Getdata>(
future: fetchGetdata(),
builder: (context, snapshot){
if (snapshot.hasData) {
String nama =snapshot.data.nama;
String program =snapshot.data.program;
String notel =snapshot.data.notel;
String cgpa =snapshot.data.cgpa;
return Container(
padding: EdgeInsets.all(15.0),
child:Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: <Widget>[
SizedBox(height:30),
/*Stack(
children: <Widget>[
Container(
//color: Color.fromRGBO(240, 240, 255, 1),
decoration: BoxDecoration(
color: Color.fromRGBO(240, 216, 216, 1),
borderRadius: BorderRadius.only(
topLeft: Radius.circular(10),
topRight: Radius.circular(10),
bottomLeft: Radius.circular(10),
bottomRight: Radius.circular(10)
),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
spreadRadius: 3,
blurRadius: 5,
offset: Offset(0, 3), // changes position of shadow
),
],),),
CircleAvatar(backgroundImage: AssetImage('Images/myresult.png', ), radius:50.0,),
],
),*/
CircleAvatar(backgroundImage: AssetImage('Images/myresult.png', ), radius:50.0,),
SizedBox(height:10),
Flexible( child:Text('$nama', style: TextStyle(
fontFamily: 'raleway',
color: Colors.white,fontSize: 18), softWrap: true, textAlign: TextAlign.center ),),
Flexible( child:Text('$program', style: TextStyle(
fontFamily: 'raleway',
color: Colors.white, fontSize: 9),softWrap: true, textAlign: TextAlign.center ),),
SizedBox(height:50),
Expanded(
child: Container(
child: ListView(
children: <Widget>[
ListTile(
leading: Icon(Icons.book, color: Colors.deepPurple,),
title:
Text('Program:', style: TextStyle(
fontFamily: 'raleway',
fontWeight: FontWeight.bold) ),
subtitle: Text('$program' ),
),
ListTile(
leading: Icon(Icons.phone, color: Colors.blueAccent,),
title:
Text(' Telefon', style: TextStyle(
fontWeight: FontWeight.bold) ),
subtitle: Text('$notel'),
),
],
),
),
),
],
),
);
} else if (snapshot.hasError) {
return Text("${snapshot.error}");}
return CircularProgressIndicator();
}
),
),
])),
);
最佳答案
您的某些Columns已设置mainAxisSize: MainAxisSize.min，将其更改为MainAxisSize.max即可扩展它们，而不是包装内容。对于所有这些人可能都没有必要。
关于flutter - 为什么要扩大而不是扩大高度，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/63355532/