A non-null String must be provided to a Text widget. 'package:flutter/src/widgets/text.dart': Failed assertion: line 370 pos 10: 'data != null'
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Your documents[i]['text'] is null, and Text widget requires a String parameter. Check it before using it and set a default value. It will look like this:
Text(documents[i]['text'] ?? 'Text is null')
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satyendra singh
A passionate Developer crazy about exploring new technologies in web and mobile app(Flutter) development and many more.
Updated on December 25, 2022Comments
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satyendra singh over 1 year
import 'package:cloud_firestore/cloud_firestore.dart'; class ChatScreen extends StatelessWidget { @override Widget build(BuildContext context) { return Scaffold( body: StreamBuilder( stream: Firestore.instance .collection('chats/qlxlom4AuKMJNjSo3w4a/messages') .snapshots(), builder: (ctx, streamSnapShot) { if (streamSnapShot.connectionState == ConnectionState.waiting) { return Center( child: CircularProgressIndicator(), ); } final documents = streamSnapShot.data.documents; return ListView.builder( itemCount: documents.length, itemBuilder: (ctx, i) => Container( padding: EdgeInsets.all(8), child: Text(documents[i]['text']), ), ); }), floatingActionButton: FloatingActionButton( child: Icon(Icons.add), onPressed: () { Firestore.instance .collection('chats/qlxlom4AuKMJNjSo3w4a/messages') .add({'text': 'this was addded bi clicking the button!'}); }, ), ); } }
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Connell.O'Donnell over 3 yearsPlease include a description of the problem. Your error message mentions line 370, please mention which line in the code that is.
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