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Questions tagged [flutter-streambuilder]

192 questions
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LateInitializationError: Field 'chatRoomsStream' has not been initialized in Flutter

I'm building a Messenger app on Flutter using Firebase and when I click to chat with another user - I get this exception before the previous messages are loaded. ======== Exception caught by widgets library…
VenoM
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Flutter StreamBuilder errors

Implemented StreamBuilder to display items in shopping cart's updated prices. Everything works as expected when one or two items are in cart, but when add third item I get the third item correctly but first and second items in cart display following…
SenTnel
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How can I implement Stream to get list of sub collection for each docs ? -flutter

I'm try to get sub collection from each doc ex.clothes,notifer witch I have more docs , that means I don't know its id ,My bossiness Logic was to fetch the main collection for getting all the documents and then for each doc get its sub collection…
Mo7ammed 7amad
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two streambuilders gives me RangeError (index): Invalid value: Only valid value is 0: 1 when it supposed to read two docs from 2 different collections

What im trying to do is filling a card with the necessary data it needs which is userImage and UserFirstname from my users collection and also data from my subcollection(carReviews)in my carInfo collection where i store the necessary review…
Arminmos
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Getting compile time errors while building Streams in Flutter

I'm trying to return this List as a Stream, but I'm getting the below errors: 1. The body might complete normally, causing 'null' to be returned, but the return type is a potentially non-nullable type. 2. A value of type…
xpetta
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StreamBuilder updating the stream only after hot restart

I am building an app where it collects all the orders and order details placed from Firebase. I have to get 2 things Salon details from contactnumber which I saved using singleton method once the user logs in Customer details from CustID What…
wamika
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Problem with stream and firebase Bad state: field does not exist within the DocumentSnapshotPlatform

I have a StreamBuilder that is meant to be getting me a list of documents from firestore based on a variable being passed through, though I am getting the above error. StreamBuilder StreamBuilder( stream:…
Boss Nass
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Flutter Update Text Widget Variable without Reloading

Im using Flutter with Firestore to make Investing Application. enter image description here In this page, I get Firestore's data in Streambuilder. The data what i recieved are displayed in Listview with Inkwell. What I want to do is when I click the…
flyer
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Listen to changes and get info on updated fields only

I have Flutter/Firebase app, which allows users to store their book reading data into Firestore (books completed reading, reading currently etc). I would like to implement a feature, which allows users to see if someone completes reading a book (FS…
maisy003
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How to pass a Firestore document from a stream to next page in Flutter?

I have a listview where each item is one document from a firestore collection. I would like to tap the item and pass the document information to a details page. This is how I am retrieving document information within the first stream: child:…
Ian Carberry
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ERROR: The argument type 'Object?' can't be assigned to the parameter type 'String?'

I have a TextFormField widget wrapped inside a StreamBuilder, in TextFormField widget, inside the decoration, when is pass snapshot.error to the errorText argument, it gives an error: The argument type 'Object?' can't be assigned to the parameter…
sharmaji saheb
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type '_JsonQuerySnapshot' is not a subtype of type 'Map' in a StreamBuilder

I am getting this error when trying to fetch user posts from Firestore with the StreamBuilder. @override Widget build(BuildContext context) { return Column( children: [ Expanded( child: StreamBuilder( stream: postRef …
han da
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Use Stream to populate TextEditingController in flutter app

I can't seem to pass a QuerySnapshot from one class to another without losing the Snapshot so I am trying to find a work around (see my post here). I am trying to pull the data again by using a StreamBuilder. StreamBuilder ( stream:…
LostTexan
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Flutter Child State not updating based on changing Parent State: FlutterFirestore Stream

I have two widgets: Home and EntryList. In the Home widget, I can change the value date that is always being passed into EntryList which should then update it's Stream widget. However, when I change the Date value, the EntryList widget is still…
pythonNovice
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I want to Navigate to another page and parse with firestore data but how do I do that when I am using MaterialPageRoute?

I want to navigate from Products Page to a ProductDetail page but I am using data directly from firebase firestore. What do I put in the MaterialPageRoute as the arguments? I am also using StreamBuilder to get data snapshot from firebase. Below is…
Ambroze kweronda
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