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Recent questions tagged Firebase

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firebase - Handling keepSynced() while on background on Android and with FCM

I'm considering the use of keepSynced() for some data from Firebase Realtime Database. I understand that it will ... , will it stop syncing? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Firestore Security Rules - How can I check that a field is/isn't being modified?

For the life of me, I cannot understand why the following is resulting in a false for allowing writes. Assume ... actually a bug in Firestore. See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase authentication - Why do I get com.google.android.gms.common.api.ApiException: 10:?

private void handleSignInResult(Task<GoogleSignInAccount> completedTask) { try { GoogleSignInAccount account = completedTask.getResult ... ; } } See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Store files with unique/random names

With the new Firebase API you can upload files into cloud storage from client code. The examples assume ... creating unique storage references? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - How can I solve FirebaseError?

ERROR FirebaseError: Invalid query. You have a where filter with an inequality (<, <=, >, or >=) on ... :https://stackoverflow.com/questions/65829985/how-can-i-solve-firebaseerror...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Firestore how to query field containing any of the values in the array

Say my Firestore DB contains a collection of documents, each with a field that contains a large array of numbers. For ... -to-query-field-containing-any-of-the-values-in-the-array...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Firestore data modelling for travel planner

I'm building an apps that involved travel planning using flutter. this app will help people plan their ... .com/questions/65839265/firestore-data-modelling-for-travel-planner...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.0k views

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firebase - Flutter Firestore count documents real-time

I have a code in my flutter project which counts the number of documents in a collection where " ... .com/questions/65842174/flutter-firestore-count-documents-real-time...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Problems with using a URL in NetworkImage (flutter)

I am trying to pass a URL that I receive from Firebase to my NetworkImage widget on the AppBar. However, ... /questions/65844044/problems-with-using-a-url-in-networkimage-flutter...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - How to implement null-safety in simple flutter-dart code with object snapshot.data?

I am new to flutter/dart coding, please help me solve the following: Here is my code trying to fetch data from ... -null-safety-in-simple-flutter-dart-code-with-object-snapshot-da...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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firebase - Make FirebaseAnimatedList auto scroll when have new data

I've try to build Chat example on Flutter, but I have problem, how I can make FirebaseAnimatedFlutter ... /65846722/make-firebaseanimatedlist-auto-scroll-when-have-new-data...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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firebase - recent messages with firestore - 1 second document write limit - swift

I would like to implement a feature in my iOS application similar to the whatsapp application, when you're ... /recent-messages-with-firestore-1-second-document-write-limit-swift...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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firebase - How to avoid loops when writing cloud functions?

When writing event based cloud functions for firebase firestore it's common to update fields in the affected document ... -update-the-same-document-which-it-is-listning-for...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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firebase - flutter branch IO integration and attribution implement

I am using flutter_branch_sdk package to integrate branch IO SDK I am trying to track the user ... questions/65852402/flutter-branch-io-integration-and-attribution-implement...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.6k views

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firebase - Firestore Security Rules - allow read subcollection based on its parent document data

I am implementing a chat app with Firestore, and I have a document for each chatroom in a collection " ... -security-rules-allow-read-subcollection-based-on-its-parent-document...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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firebase - Does multiple updates on single document in a transaction incur write cost for each update separately in Firestore

For example will update(sfDocRef, "population", newPopulation) and update(sfDocRef, "count", newCount) be counted as ... -single-document-in-a-transaction-incur-write-cost-for-e...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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firebase - Flutter:How to convert Cards UI or View to Individual View Please find the HomeScreen Page code and try to convert to detailed individual view

Flutter:How to convert Cards UI or View to Individual View Please find the HomeScreen Page code and try to convert to ... -cards-ui-or-view-to-individual-view-please-find-the-homes...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

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firebase - Reload FirebaseAuth in Flutter

i have created in Flutter the following Code: if (_auth.currentUser != null) { && FirebaseAuth.instance ... ://stackoverflow.com/questions/65859037/reload-firebaseauth-in-flutter...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

firebase - UnityWebRequest get return in html tag

If I tested it as a local page on firebase, UnityWebRequest.Get("http://localhost:5000/main/chat? ... stackoverflow.com/questions/65859351/unitywebrequest-get-return-in-html-tag...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

firebase - Nuxt middleware: How to access vuex store?

I am trying to block user on client-side from editing another user's profile. My URL structure is like ... .com/questions/65859448/nuxt-middleware-how-to-access-vuex-store...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

firebase - FlutterFirebase Is it possible to add text data about photo and photo?

I got confused in this situation. Im working on a new project like adding photo and description or other text input. I ... -is-it-possible-to-add-text-data-about-photo-and-photo...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

firebase - StreamBuilder<Event>(dirty, state: _StreamBuilderBaseState<Event, AsyncSnapshot<Event>>#ac213):

i'm just learning flutter, and i'm find problem. i can't retrive ... stackoverflow.com/questions/65861202/streambuildereventdirty-state-streambuilderbasestateevent-asyncsnapshot...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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firebase - How to delete Documents by Value name?

Is it possible in Firestore to delete some documents, where the "Value Name" is the same? For example: ... .com/questions/65862073/how-to-delete-documents-by-value-name...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.2k views

1 answer

firebase - DocumentSnapshot in a FutureBuilder : Bad state: cannot get a field on a DocumentSnapshotPlatform which does not exist

I've been struggling with an error that is apparently due to new changes of DocumentSnapshot that I'm trying to use ... -a-futurebuilder-bad-state-cannot-get-a-field-on-a-documen...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.4k views

1 answer

firebase - FlutterFirebaseCorePlugin.java uses or overrides a deprecated API

Ok so I run my program without importing firebase core, firebase auth and cloud firestore, and my ... /65862666/flutterfirebasecoreplugin-java-uses-or-overrides-a-deprecated-api...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

firebase - Construct Model from different Collections Firestore - Swift Programmatically

I'm using MVC pattern to deploy iOS application. When I'm implementing a chat feature like ... 65862943/construct-model-from-different-collections-firestore-swift-programmatically...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

1.3k views

1 answer

firebase - Flutter: Realtime database, append data under specific UID

I'm trying to add a grid on every click to real-time database. However, when a new value is ... com/questions/65864436/flutter-realtime-database-append-data-under-specific-uid...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

0 votes

2.4k views

1 answer

firebase - Flutter- FCM A background message could not be handled in Dart as no onBackgroundMessage handler has been registered

I want to handle background message of the FCM in the Flutter but i got error when fcm send message to the ... -background-message-could-not-be-handled-in-dart-as-no-onbackgroun...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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