[英]bottom button in ModalBottomSheet is not visible after singlechildscrollview in flutter
我希望取消費用和底部按鈕保持固定在屏幕上,而選擇座位和乘客應該是可滾動的。 但是,每當我嘗試在 singlechildscrollview 之后插入任何小部件時,它都不會出現在底部。
因為,我的列有 3 個小部件,一行,singlechildscrollview 和按鈕,所以我的按鈕和頂行應該保留在那里,剩余的座位和乘客應該是可滾動的,但我看不到底部按鈕,而我的行工作正常,留在那里。
代碼 -
showCancellationCharges(BuildContext? context) {
final DateTime currentDate = DateTime.now();
if (ticketData!.data!.booking!.boarding!.eta! >
currentDate.millisecondsSinceEpoch)
showModalBottomSheet(
backgroundColor: Colors.white,
context: context!,
builder: (context) => Wrap(
children: [
StatefulBuilder(
builder: (context, stateSetter) => Padding(
padding: MediaQuery.of(context).viewInsets,
child: Container(
//height: MediaQuery.of(context).size.height*0.7,
child: Container(
padding: EdgeInsets.symmetric(horizontal: 16),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
mainAxisSize: MainAxisSize.min,
children: [
Padding(
padding: const EdgeInsets.only(top: 5.0, bottom: 5.0),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: [
Text(
'Cancellation Charges',
style: TextStyle(
fontWeight: FontWeight.bold,
fontSize: 20,
)
),
IconButton(
icon: Icon(
Icons.close,
color: colorPrimary,
),
onPressed: () {
Navigator.of(context).pop();
},
),
],
),
),
Container(
height: MediaQuery.of(context).size.height*0.5,
child: SingleChildScrollView(
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Padding(
padding: const EdgeInsets.symmetric(vertical: 8.0),
child: Text(
'Choose Seat(s)',
style: TextStyle(color: popUpLightTextColor),
),
),
Column(
children: List.generate(
ticketData!.data!.booking!.seats!.length,
(index) => CancellationItem(
checkBoxState: ticketData!.data!.booking!
.seats![index].selected,
checkBox: (v) => stateSetter(() {
print('seat at index $index $v');
if (v)
totalSeatToCancel++;
else
totalSeatToCancel--;
ticketData!.data!.booking!.seats![index]
.selected = v;
}),
// checkBoxState: data[index.],
imagePath:
'assets/icons/ticket_seat_icon.svg',
title: ticketData!
.data!.booking!.seats![index].code,
)),
),
// CancellationSeatItems(
// data: ticketData.data.booking.seats,
// ),
Padding(
padding: const EdgeInsets.symmetric(vertical: 8.0),
child: Text(
'Choose Passenger(s)',
style: TextStyle(color: popUpLightTextColor),
),
),
Column(
children: List.generate(
ticketData!.data!.booking!.passengers!.length,
(index) => CancellationItem(
checkBoxState: ticketData!.data!.booking!
.passengers![index].selected,
checkBox: (v) => stateSetter(() {
if (v)
totalPassengerToCancel++;
else
totalPassengerToCancel--;
print('passenger at index $index $v');
ticketData!.data!.booking!
.passengers![index].selected = v;
}),
imagePath: (ticketData!.data!.booking!
.passengers![index].gender ==
'MALE')
? 'assets/icons/male_icon.svg'
: 'assets/icons/female_icon.svg',
title: ticketData!.data!.booking!
.passengers![index].name,
)),
),
],
),
),
),
Padding(
padding: const EdgeInsets.symmetric(vertical: 16),
child: Container(
child: ValueListenableBuilder(
valueListenable: isCalculating,
builder: (BuildContext context, bool val, Widget? child) {
return FlatButton(
height: 44,
minWidth: MediaQuery.of(context).size.width,
color: val ? Colors.grey : colorPrimary,
onPressed: () => calculateItem(),
child: Text(
val ? 'Calculating...' : 'Calculate',
style: TextStyle(
color: Colors.white,
fontSize: 16
),
),
);
},
),
),
),
// CancellationPassengerItems(
// data: ticketData.data.booking.passengers,
// ),
],
),
),
),
),
),
],
));
else
_snackbarService.showSnackbar(
message: 'Sorry, ticket can not be cancelled');
}
您可以將列表視圖放在具有高度的容器中
其實我解決了這個問題。 我剛剛使用了isScrollControlled: true,
showModalBottomSheet
的參數,它就完成了。
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