Exception caught by widgets library RangeError (index): Invalid value: Not in inclusive range 0..35: 36

Question

Widget build(BuildContext context) {
    return Scaffold(
    appBar: AppBar(
        title: Text(
          'Products',
         ),
       ),
    body: Center(
       child: FutureBuilder(
          future: fetchPhotos(),
               builder: (ctx, snapShot) {
                    if (snapShot.connectionState == ConnectionState.waiting) {
                         return CircularProgressIndicator();
                     } else {
                    return ListView.builder(
                      itemBuilder: (context, index) {
                         return ListTile(
                          leading: CircleAvatar(
                             backgroundColor: Colors.red,
                          ),
                           title: Text(snapShot.data["table"][index]["name"]),
                           subtitle: Text(
                              "price: ${snapShot.data["table"][index]["class_id"]}"),
                       );
                     },
                   );
                 }
               },
              ),
            ),
          );
         }

What should I put in it itemCount so as not to show an error : Exception caught by widgets library RangeError (index): Invalid value: Not in inclusive range 0..35: 36

croxx5f · Accepted Answer · 2021-09-13T07:18:30.877

1

Add the itemCount parameter to yout listView Builder as :

ListView.builder(
 itemCount: snapShot.data["table"].length,
 itemBuilder: (context, index) {
       ...

This way flutter knows when to stop building items

edited Sep 13 '21 at 07:18

answered Sep 13 '21 at 06:57

croxx5f

5,163
2
15
36

Displays only the first 3 items – Sep 13 '21 at 07:10
It seems like you are displaying the tables object so it would be `itemCount: snapShot.data["table"].lenght` – croxx5f Sep 13 '21 at 07:13
Error : Exception caught by widgets library / Class 'List' has no instance getter 'lenght'. Receiver: Instance(length:36) of '_GrowableList' Tried calling: lenght – Sep 13 '21 at 07:17
It was `length` not `lenght`, sorry I misspelled it. – croxx5f Sep 13 '21 at 07:19
BTW @Jahidul you copy pasted it wrong too. – croxx5f Sep 13 '21 at 07:19

Exception caught by widgets library RangeError (index): Invalid value: Not in inclusive range 0..35: 36

1 Answers1