How do I Enable Offline Support? | Get to know Cloud Firestore #9

What people said

Recommends crysxd · 2019-06 · Stack Overflow · on “how to synchronize Room data with Cloud Firestore?”

Firestore already has a persistence layer included, you don't need Room at all. You can enable the offline support like this: val settings = FirebaseFirestoreSettings.Builder() .setPersistenceEnabled(true) .build() db.firestoreSettings = settings Using Firestore for persistance has many benefits over Room (besides the saved effort and potential bugs). If you e.g. load all restaurants in a city, then go offline and then run a query on e.g. the best restaurants the query will still work and use the cached data even when the query was never run while being online. You can also configure the cache size Firestore uses to meet your needs. Documents are cached in a LRU manner, so the documents whic

Recommends Frank van Puffelen · 2019-08 · Stack Overflow · on “Why is not the my listeners hit here in this Firestore set”

The Firestore client is designed to continue functioning fine without an internet connection. So writing to the database without an internet connection is (by design) not raised as an error condition. You can build a time-out mechanism for the completion listeners, or detect on your own whether there is an internet connection. I'd also recommend watching the latest episode in Getting to know Cloud Firestore [LINK] , which covers offline behavior [this video] .

Recommends tyirvine · 2020-06 · Stack Overflow · on “How to implement a swipe to delete listview to remove data from firestore”

I'd like to add that when deleting a document from Firestore, no await is needed as the plugin automatically caches the changes and then syncs them up when there is a connection again. For instance, I used to use this method Future deleteWatchlistDocument(NotifierModel notifier) async { final String uid = await _grabUID(); final String notifierID = notifier.documentID; return await _returnState(users.document(uid).collection(watchlist).document(notifierID).delete()); } in which I was waiting for the call to go through, however this prevented any other call to go through and only allowed one. Removing this await tag however solved my issue. Now I can delete documents offline, and the changes

Recommends Francois Souterelle · 2020-11 · Stack Overflow · on “Flutter StreamProvider not updating after pushReplacement called”

I ran into the exact same problem and I chose to explicitely navigate back to the Wrapper when user logs out with something like that : void signOut(BuildContext context) { Auth().handleSignOut(); Navigator.pushAndRemoveUntil( context, MaterialPageRoute(builder: (context) => Wrapper()), (_) => false ); } I still listen to the stream in a Provider to void user data for security reasons but I don't rely on this listener to get back to the initial screen. void initAuthListener(){ userStream = Auth().user; userStream.listen((data) { if(data==null){ voidUser(); }else{ setUser(data); } }, onDone: () { print("Task Done"); }, onError: (error) { print("Some Error"); }); } Having said that I'd be happ

Recommends samthecodingman · 2021-11 · Stack Overflow · on “Firebase V9 does not give error in catch when offline”

This is by design thanks to Firestore's Offline Behaviour [this video] (queued up to the right spot, but I do recommend watching in full). The promise will resolve once the server has acknowledged the request. If the server is currently unavailable, that request is cached within the SDK and attempted as soon as a connection is restored. During this window, the Promise will be kept in its pending state because that's the state its actually in - pending. While the promise may not resolve, all your local realtime listeners and such will still fire off and your app will function as normal - just offline. Dealing with this behaviour is an exercise for the developer. One way to approach this would be t

Recommends genericUser · 2022-05 · Stack Overflow · on “Flutter Firestore Set Timeout”

Firestore Offline mode is enabled by default for Android and IOS! Cloud Firestore supports offline data persistence. This feature caches a copy of the Cloud Firestore data that your app is actively using, so your app can access the data when the device is offline. You can write, read, listen to, and query the cached data. When the device comes back online, Cloud Firestore synchronizes any local changes made by your app to the Cloud Firestore backend. For that reason, if you are not dealing with transactions [LINK] (atomic operations), then You don't need to await for Firestore acks , and you don't need to use timeouts at all! Checkout this awesome video: [this video] Firestore documentation: [LIN

Recommends Kris Swat · 2023-09 · Stack Overflow · on “How to configure offline persistence in a react firebase firestore app”

I want to reduce the number of reads in my firebase application. I watched this video, but still unsure of how to implement in my project [this video] There are a couple of posts , but they are 4 or 5 year old answers. my code is not looking similar to that ( firebase firestore offline persistence FirebaseError [LINK] and Cache first implementation for get in firestore [LINK] ) my index.js (react) ... import firebase from 'firebase/compat/app'; import 'firebase/compat/analytics'; import 'firebase/compat/auth'; import 'firebase/compat/firestore'; import 'firebase/compat/functions'; import 'firebase/compat/storage'; const firebaseConfig = { apiKey: "-...", authDomain: ".com", projectId: "ch", stora

Cites diegoveloper · 2018-11 · Stack Overflow · on “Using Offline Persistence in Firestore in a Flutter App”

when you use offline persistence in Firestore, don't use Transactions or await for response. so, change this : await Firestore.instance.collection('certificados').document((certID.toString())) .setData(finalDataMap); to this: Firestore.instance.collection('certificados').document((certID.toString())) .setData(finalDataMap); When you restore your internet connection your data will be sync automatically, even if you are in background. Doesn't work when your app is closed. Context Of Promises & Callbacks when Offline Why the above code change to remove "await" works. Reference: Firebase Video - How Do I Enable Offline Support 11:13 [this video] Your callback won't be called and your promise won't co

Cites damienix · 2019-06 · Stack Overflow · on “Possible to Host Firestore Onsite?”

Please take a look at this video [this video] Firestore is not designed to work as a standalone database. However, it's designed to withstand longer periods of downtime, hours and even days. But if it's days - you should already consider a different solution. In your case, I suspect what you'd like to have various clients synchronized even if the Internet is down. This will not work in Firestore as each client would have its own copy of the cache. Thus I wouldn't recommend using Firestore in your scenario.

Cites Frank van Puffelen · 2019-06 · Stack Overflow · on “How to read docs as offline and write as (online & offline) in firestore?”

When you use get() (without arguments) to read a document, the Firestore client will always checks with the server to ensure you get the latest data. You have two options to get the data from the local cache: Use get({ source: "cache" }) ( docs [LINK] ), which will return the document from the local cache. If the document doesn't exist in the local cache, it'll raise an error. In that case you'll still want to check against the server. Use an onSnapshot() listener. When you attach this listener, it immediately calls back with the value from the local cache, as get({ source: "cache" }) does. But it also checks with the server if there is any update to the data. If there is, it retrieves the u