FLUTTER: RangeError (index): Index out of range: no indices are valid: 0 (Pass Parameters)
The problem comes from the way you are initializing your Detail
page
Detail({index, list});
You need to add this
to the initialization, like this:
Detail({this.index, this.list});
I believe that should solve the problem.
G28
Updated on January 02, 2023Comments
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G28 over 1 year
I hope you can help me find a way to solve this problem that arises, I am trying to pass the data from the list and the index to the next tab.
but I get this error: RangeError (index): Index out of range: no indices are valid: 0
I leave the code that I use.
so I get the data and fill the list:
Future<List> getData() async { final response = await http.get(url); return json.decode(response.body); } body: FutureBuilder<List>( future: getData(), builder: (context, snapshot) { if (snapshot.hasError) print(snapshot.error); return snapshot.hasData ? ItemList( list: snapshot.data ?? [], ) : new Center( child: CircularProgressIndicator(), ); }, )
And so I try to get the index and the list and where the error points to me:
class ItemList extends StatelessWidget { const ItemList({Key? key, required this.list}) : super(key: key); final List list; @override Widget build(BuildContext context) { return ListView.builder( itemCount: list.isEmpty ? 0 : list.length, itemBuilder: (context, i) { return Container( padding: const EdgeInsets.all(10.0), child: GestureDetector( onTap: () { Navigator.push( context, MaterialPageRoute( builder: (context) => Detail(list: list, index: i),//<----errror ), ); },
my other tab is like this:
class Detail extends StatefulWidget { List list = []; int index = 0; Detail({index, list}); @override _DetailState createState() => _DetailState(); }
I recover it in the following way:
widget.list[widget.index]['id']
json
[{" id ":" 1 "," nombre de usuario ":" Victor "," contraseña ":" 12345 "," nivel ":" admin "}, {" id ":"5"," nombre de usuario ":" sekia "," contraseña ":" 12345 "," nivel ":" cliente "}]
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G28 over 2 yearsThank you, Thank you very much you solved my problem :)