Flutter Visibility widget not working third time - flutter

Question

I have wrapped ListView.builder inside Visible widget, and the button for its visible property is in a ListTile widget with variable _currencyVisible.
The widget Visible works 2 times i.e. false/hidden(default), then changes to visible when clicked, and again hides on the second click, but it doesn't work after that. Printing on console _currencyVisible shows correct data.
Here's my code:
menuItems(BuildContext context) {
bool _currencyVisible = false;
return StatefulBuilder(
builder: (BuildContext context, void Function(void Function()) setState) {
return ListView(
children: [
ListTile(
title: FutureBuilder<dynamic>(
future: getUserCurrencySymbol(),
builder:(BuildContext context, AsyncSnapshot<dynamic> snapshot) {
return Text("Currency " + snapshot.data.toString());
}),
trailing: IconButton(
icon: Icon(Icons.refresh),
onPressed: () { setState(() { _currencyVisible = !_currencyVisible; }); },
),
),
Visibility(
visible: _currencyVisible,
child: ListView.builder(
shrinkWrap: true,
itemCount:
currency.allCurrenciesList.length,
itemBuilder: (context, index) {
for (Currency c in currency.allCurrenciesList) {
currency.allCurrenciesList.removeAt(0);
return Card(
child: ListTile(
title: Text(c.country),
subtitle: Text(c.shortCurrency),
trailing: Text(c.symbol),
onTap: () {
saveUserCurrency(c.country, context);
},
),
);
}
return Text("Not Null");
},
),
),
],
);
},
);
}

Answer 1

You are removing all of the data from your currency list. The widget is showing correctly, but there is no data to display.
Remove this line
currency.allCurrenciesList.removeAt(0);
Don't loop through the currencies in itemBuilder. Use index instead.
Visibility(
visible: _currencyVisible,
child: ListView.builder(
shrinkWrap: true,
itemCount: currency.allCurrenciesList.length,
itemBuilder: (context, index) {
final c = currency.allCurrenciesList[index];
return Card(
child: ListTile(
title: Text(.country),
subtitle: Text(c.shortCurrency),
trailing: Text(c.symbol),
onTap: () {
saveUserCurrency(c.country, context);
},
);
}
return Text("Not Null");
),
),