如何在颤振可见性上添加滚动

Question

我想使scrollview在可见性，但当我试图添加SingleChildScrollView它仍然不起作用，结果是这样的

结果

和我想要的应用程序将运行如下所示

它的主要目的是当下拉菜单项在屏幕上滚动时，它不会被带走

谢谢你，如果我的话有点难以理解，我很抱歉

，这是我的代码:

class AddressScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() => _AddressState();
}
class _AddressState extends State<AddressScreen> {
String? _detail;
bool _saveButton = false;
String? valueChoose;
List listProvinsi = ['Lampung', 'DKI Jakarta'];
String? valueChoose2;
List listKabupaten = ['Bandar Lampung', 'Jakarta Timur'];
String? valueChoose3;
List listKecamatan = ['Kemiling', 'Cipayung'];
String? valueChoose4;
List listKelurahan = ['Beringin Raya', 'Bambu Apus'];
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.grey[100],
appBar: AppBar(
titleSpacing: 0,
elevation: 10,
backgroundColor: Theme.of(context).primaryColor,
title: Text(
'Alamat',
style: TextStyle(fontSize: 18),
),
actions: [
GestureDetector(
onTap: () => {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => ProfileScreen(),
),
),
},
child: Container(
height: 30,
width: 30,
margin: EdgeInsets.only(
right: 3,
),
decoration: BoxDecoration(
shape: BoxShape.circle,
border: Border.all(color: Colors.white, width: 1.5),
image: DecorationImage(
fit: BoxFit.cover,
image: AssetImage(personImg),
),
),
),
),
GestureDetector(
onTap: () => {
Navigator.push(
context,
MaterialPageRoute(
builder: (context) => HomeScreen(),
),
),
},
child: Container(
margin: EdgeInsets.only(
right: 7,
),
child: Image.asset(iconAppbar),
),
),
],
),
body: SafeArea(
child: Container(
child: Column(
children: <Widget>[
Container(
height: SizeConfig.screenHeight / 4.5,
decoration: BoxDecoration(
color: Colors.white,
boxShadow: [
BoxShadow(
color: Color(0x14000000),
offset: Offset(
0,
2,
),
blurRadius: 4,
spreadRadius: 2,
),
],
),
child: Row(
children: [
SizedBox(width: SizeConfig.screenWidth / 17),
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
SizedBox(height: 15),
Container(
child: Text(
'Alamat Anda',
style: TextStyle(
color: Colors.grey.shade700,
fontSize: 14,
fontWeight: FontWeight.bold,
),
),
),
Container(
height: SizeConfig.screenHeight / 9,
width: SizeConfig.screenWidth / 2.2,
// color: Colors.grey,
child: Row(
children: [
Expanded(
child: Text(
'Perumahan Berkoh Indah Jl. Brawijaya No. 45 Gg. Mangga Rt.03 Rw.05 Kel. Arcawinangun, Kec. Purwokerto Timur, Kab. Banyumas Jawa Tengah - 53114',
style: TextStyle(
color: Colors.black54,
fontSize: 11,
),
),
),
],
),
)
],
),
SizedBox(width: SizeConfig.screenWidth / 9),
//@arjunalst2020
// ChangeButton(),
InkWell(
onTap: () {
setState(() {
_saveButton = !_saveButton;
});
},
child: Container(
margin:
EdgeInsets.only(top: SizeConfig.screenHeight / 8),
height: SizeConfig.screenHeight / 17,
width: SizeConfig.screenWidth / 3,
decoration: _saveButton
? BoxDecoration(
color: Colors.grey.shade700,
borderRadius:
BorderRadius.all(Radius.circular(8)))
: BoxDecoration(
color: Colors.pink.shade800,
borderRadius:
BorderRadius.all(Radius.circular(8))),
child: Center(
child: Text(
_saveButton ? 'Simpan' : 'Ubah',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.white),
),
),
),
),
],
),
),
SizedBox(height: 20),
Visibility(
visible: _saveButton,
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Provinsi',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Container(
height: SizeConfig.screenHeight / 17,
padding: EdgeInsets.only(right: 10, left: 10),
decoration: BoxDecoration(
color: Colors.grey.shade300,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: DropdownButton(
isExpanded: true,
dropdownColor: Colors.white,
value: valueChoose,
iconSize: 25,
underline: SizedBox(),
style: TextStyle(
fontSize: 13,
color: Colors.black54,
fontWeight: FontWeight.bold),
onChanged: (newValue) {
setState(() {
valueChoose = newValue.toString();
});
},
items: listProvinsi.map((valueItem) {
return DropdownMenuItem(
value: valueItem, child: Text(valueItem));
}).toList(),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Kabupaten/Kota',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Container(
height: SizeConfig.screenHeight / 17,
padding: EdgeInsets.only(right: 10, left: 10),
decoration: BoxDecoration(
color: Colors.grey.shade300,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: DropdownButton(
isExpanded: true,
dropdownColor: Colors.white,
value: valueChoose2,
iconSize: 25,
underline: SizedBox(),
style: TextStyle(
fontSize: 13,
color: Colors.black54,
fontWeight: FontWeight.bold),
onChanged: (newValue2) {
setState(() {
valueChoose2 = newValue2.toString();
});
},
items: listKabupaten.map((valueItem) {
return DropdownMenuItem(
value: valueItem, child: Text(valueItem));
}).toList(),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Kecamatan',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Container(
height: SizeConfig.screenHeight / 17,
padding: EdgeInsets.only(right: 10, left: 10),
decoration: BoxDecoration(
color: Colors.grey.shade300,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: DropdownButton(
isExpanded: true,
dropdownColor: Colors.white,
value: valueChoose3,
iconSize: 25,
underline: SizedBox(),
style: TextStyle(
fontSize: 13,
color: Colors.black54,
fontWeight: FontWeight.bold),
onChanged: (newValue3) {
setState(() {
valueChoose3 = newValue3.toString();
});
},
items: listKecamatan.map((valueItem) {
return DropdownMenuItem(
value: valueItem, child: Text(valueItem));
}).toList(),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Kelurahan',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Padding(
padding: const EdgeInsets.only(right: 20, left: 20),
child: Container(
height: SizeConfig.screenHeight / 17,
padding: EdgeInsets.only(right: 10, left: 10),
decoration: BoxDecoration(
color: Colors.grey.shade300,
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: DropdownButton(
isExpanded: true,
dropdownColor: Colors.white,
value: valueChoose4,
iconSize: 25,
underline: SizedBox(),
style: TextStyle(
fontSize: 13,
color: Colors.black54,
fontWeight: FontWeight.bold,
),
onChanged: (newValue4) {
setState(() {
valueChoose4 = newValue4.toString();
});
},
items: listKelurahan.map((valueItem) {
return DropdownMenuItem(
value: valueItem, child: Text(valueItem));
}).toList(),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Jalan/Gang/Nama Gedung/Nama Perumahan',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Container(
height: SizeConfig.screenHeight / 17,
width: SizeConfig.screenWidth / 1.12,
child: TextField(
maxLines: 1,
style: TextStyle(fontSize: 12),
onChanged: (value) {
setState(() {
_detail = value;
});
},
decoration: InputDecoration(
counterText: "",
fillColor: Colors.grey.shade300,
filled: true,
border: OutlineInputBorder(
borderSide: BorderSide.none,
),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Unit/Blok/RT/RW',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Container(
height: SizeConfig.screenHeight / 17,
width: SizeConfig.screenWidth / 1.12,
child: TextField(
maxLines: 1,
style: TextStyle(fontSize: 12),
onChanged: (value) {
setState(() {
_detail = value;
});
},
decoration: InputDecoration(
fillColor: Colors.grey.shade300,
filled: true,
border: OutlineInputBorder(
borderSide: BorderSide.none,
),
),
),
),
),
SizedBox(height: 30),
Container(
margin: EdgeInsets.only(left: 23),
child: Text(
'Kode Pos',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 12,
),
),
),
SizedBox(height: 3),
Center(
child: Container(
height: SizeConfig.screenHeight / 17,
width: SizeConfig.screenWidth / 1.12,
child: TextField(
keyboardType: TextInputType.number,
maxLines: 1,
maxLength: 8,
style: TextStyle(fontSize: 12),
onChanged: (value) {
setState(() {
_detail = value;
});
},
decoration: InputDecoration(
fillColor: Colors.grey.shade300,
filled: true,
counterText: "",
border: OutlineInputBorder(
borderSide: BorderSide.none,
),
),
),
),
),
SizedBox(height: 30),
Center(
child: Container(
width: SizeConfig.screenWidth / 1.12,
height: SizeConfig.screenHeight / 10,
decoration: BoxDecoration(
color: Colors.transparent,
border:
Border.all(color: Colors.black38, width: 0.6),
),
child: Row(
children: [
Container(
height: SizeConfig.screenHeight,
width: SizeConfig.screenWidth / 5,
decoration: BoxDecoration(
color: Colors.blueGrey,
),
child: Icon(
Icons.location_on,
color: Colors.white,
size: 35,
),
),
SizedBox(width: SizeConfig.screenWidth / 20),
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
SizedBox(height: 10),
Text(
'Tandai Lokasi Peta',
style: TextStyle(
fontWeight: FontWeight.bold,
color: Colors.black87,
fontSize: 11,
),
),
Container(
height: SizeConfig.screenHeight / 17,
width: SizeConfig.screenWidth / 1.9,
child: Row(
children: [
Expanded(
child: Text(
'Jl. Brawijaya No,45 Gg. Mangga Kel. Arcawinangun, Kec. Purwokerto Timur, Banyumas',
style: TextStyle(
fontSize: 11,
color: Colors.grey.shade800,
),
),
),
],
),
),
],
),
],
),
),
),
SizedBox(height: 10),
Container(
height: SizeConfig.screenHeight / 20,
width: SizeConfig.screenWidth / 1.6,
margin:
EdgeInsets.only(left: SizeConfig.screenWidth / 3.3),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Expanded(
child: Text(
'Pastikan lokasi yang Anda tandai di peta sesuai dengan alamat yang Anda isi di atas',
style: TextStyle(
fontSize: 9,
color: Colors.grey.shade800,
),
),
),
],
),
),
SizedBox(height: 30),
],
),
),
),
],
),
),
),
);
}
}

我很抱歉如果我的代码仍然很乱或很多是无效的，我只是学习😅

Answer 1

用Expanded包裹Visibility小部件

Expanded(
child: Visibility(
.....
),
),

如果这不起作用，用SingleChildScrollView包裹主体Column。

注意:不需要用Container包裹主Column。

Answer 2

我有过很多次同样的问题。你需要用Flexible来包装你的SingleChildScrollView。

这是我需要做的序列，以始终修复:

Flexible(
child: SingleChildScrollView(
child: Form(
key: _formKey,
child: Column(
children:[Container(
alignment: Alignment.centerLeft,
padding: EdgeInsets.only(left:10, top: 20, bottom: 20),
child: Text( )