Closure call with mismatched arguments: function '[]' in flutter

Question

** I am getting this error**

Closure call with mismatched arguments: function \'[]\'
Receiver: Closure: (dynamic) => dynamic from Function \'get\':.
Tried call         


        

Answer 1

You need to do the following:

itemCount : snapshort.data.docs.length ,
itemBuilder : (context,index){ 
  return QuizTile(url:snapshort.data.docs[index].data()['url'],
      title:snapshort.data.docs[index].data()['title'] ,
      desc: snapshort.data.docs[index].data()['desc'],
   );
  }
);

Since you are reference a collection, then you need to use docs which will retrieve a list of documents inside that collection:

https://github.com/FirebaseExtended/flutterfire/blob/master/packages/cloud_firestore/cloud_firestore/lib/src/query_snapshot.dart#L18

Then to access each field in the document, you need to call data()