Most voted "firebase" questions
Firebase is a platform for real-time storage-based application development and data synchronization using client-side code only.
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answer88
viewsHow to use Promise in Firebase Query?
I need to do basic languages like this: 1) You will query Firebase, checking if there is a certain ID. If there is this ID, it will give . then saying that it is ok and do something, if it will not…
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answer46
viewsOpen a tab, passing data brought from the firebase result
Guys, I’m testing how firebase authentication works, I can authenticate anyway(Github, FB, Twitter, Google) but I can only use the result data on the homepage. I would like to know how I could open…
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answer27
viewsWhat is the correct way to recover an Arraylist<Long> from the firestore cloud?
I am using the following code to try to recover an Arraylist from the firestore: List<Long> longs = (List<Long>) task.getResult().getDocuments().get(i.get()).get("longsArray"); However…
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answer636
viewsHow to filter an Observable?
How to filter a Observable returned from Cloud Firestore? export interface Pessoa { nome: string; cidade: string; telefone: string; } pessoaList: Observable<Pessoa[]>; I have the method below…
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answers117
viewsAuthentication problem with Firebase
I’m using Firebase for authentication and database of my app, everything was perfectly fine until (I’ll tell you exactly what happened because I don’t know if it has relation or not) I start to move…
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answers55
viewserror in update flutter + firebase method
Good afternoon! I’ve got an item error repo.senha and repo.nome. void atualizar(Repositor repo) async { var update = Map<String, String>(); update.putIfAbsent("senha", repo.senha);…
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answer123
viewsWhat’s the best way to check if a collection exists in the cloudFirestore (Android)?
I am having trouble verifying the existence of a collection. I am using the following code to perform this function: FirebaseFirestore.getInstance().collection("ID da COLEÇÃO").document("ID do…
android android-studio firebase firestoreasked 4 years, 7 months ago André Luiz Alexandre de Souza 3 -
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answer212
viewsFirebase SWIFT and Storage Image Gallery
Good afternoon, I’m finishing a APP developed in Swift 4, with Xcode 9 and Firebase. I can already log in with Firebase, and e-mail through my App, what I need to do, which I’m not getting at all is…
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answer586
viewsHow do I use Firebase Equalto and orderByKey?
I need to search my database, which "FLOOR KEY" is "main". The data I have is as follows:: this. _userid = ALLIANCE this. _mapID = MAP NAME THAT WAS CLICKED ON MARKER OF GOOGLE MAPS What I don’t…
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answer396
viewsCase insensitive search Firebase
I’m using Toolbar’s searhcview for searching recyclerview items the search works, but Firebase’s query differentiates between upper and lower case and sharp words. I wish it was Case insensitive…
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answer85
viewsView in ngModel Firestore return
How to view data returned from the Firestore in an Angular ngModel directive? I would like to take the data that is returned from the Firestore and display in an Angular ngModel directive,…
html firebase typescript angular angularjs-directivesasked 7 years, 2 months ago Luiz Ricardo Cardoso 173 -
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answers65
viewsHow to make a filter with != or Isnotiqualto in the Firestore?
Hello! I need to make an appointment with filter on firestore but I read in the documentation that they do not have "!=" or "Isnotiqualto" to create a restriction. I wanted to do something like:…
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answers31
viewsFirebase: Rename events
I received from my company the work of implementing Firebase in our flutter app, studied firebase and found the Events page of Firebase Analytics, and saw that the events already "came with…
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answer24
viewsPlace all items inside a folder in the firebase database
I’m trying to take all the items in the database and put them in a folder. When I went to the database I forgot to put the directory for the items to go to a folder…
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answers151
viewsdiary app with messages
I have a deadlock here, I’m setting up a screen for my app, where there’s a calendar, where the dates appear and when I touch the date appears the notes that another user made, but I wanted to know…
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answers76
viewsUpdate database through a Cloud Function - Firebase
Seeing a Jen Person tutorial on the Firebase youtube channel, I wrote a javascript feature that is triggered when a user of my app uploads an image to Firebase Storage. This function generates a…
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answer26
viewsI can’t log out on Firebase
Hello I have an application where the person connects by firebase until then nothing else because this is already configured and working, so I created this button in case the person wants to end the…
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answers48
viewsHow do I return the value within a . then in Vue JS?
I’m new to Vue and Firebase, I have the following problem: I want to return the generated value inside then, in the console.log that is inside then returns the id that was generated, but when I…
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answers340
viewsError "Unfortunately Myapp has stopped" when clicking the application button
I’m running my app on Genymotion, developing on Android Studio. Every time I run my application I click on the button to register, but when I click I come across the following message "Unfortunately…
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answer23
viewsHow to set Flutter correctly for cloud_firestore
Hello, someone can help me! I’m configuring flutter design with firebase access. I’m using package firebase_core: 1.3.0 and cloud_firestore: 2.2.2 Works for ok android emulator. The firebase…
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answer13
viewsFirebase Rules - Just my website Read and write data
I have a simple, public form that I created for a staff to register information. No authentication. Currently my Realtime database has the rules in Default: { "rules": { ".read": false, ".write":…
firebaseasked 3 years, 8 months ago João Carlos de Lima 1 -
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answers4
viewsLogin error in firebase deploy
I’m able to deploy using firebase CLI commands on my machine, but I’m not getting through this step in git actions, can someone help me?…
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answer115
viewsFirebase - Why it does not execute addOnCompleteListener code
How does addOnCompleteListener work, it is not a System that will be called when the signInWithEmailAndPassowrd operation is executed? It enters a correct login and password and click on the button…
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answers61
viewsUnity with Firebase + Google Authentication How-to
I’m in need of a help to use Firebase with Google Authentication in the documentation this very vague for me at least. example is this code where I get these googleIdToken and the googleAcessToken?…
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answer831
viewsHow do I send notifications (push) to a specific user (from the application) from Firebase?
I’m developing applications using the Ionic framework. One of the big questions I have is how do I work as remote notifications (different from local notifications, easily generated by Ionic). Using…
android ionic firebase push-notification firebase-cloud-messagingasked 7 years ago Victor Nolêto 25 -
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answer1074
viewsPick up child object - firebase
I have a firebase bank in this structure: { "-L4Wqs3YbAlUgTWElF4Q" : { "receita" : { "-L6m_C46-Mj1py6RtF8H" : { "imagem" : "default", "ingrediente" : [ "ovo", "leite" ], "nome" : "um nome",…
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answer421
viewsChange structure firebase bank
I made a question here at Sopt on how to do a search on the firebase Realtime database, and @Rosáriopereirafernandes suggested changing the structure of the database Ancient structure: {…
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answer35
viewsScript in Firestore (Firebase) does not arrive at update
I’m having trouble with the code below. The code reaches postbackRef.add and adds the information in the database, but after that it does not enter transactionsRef.Where to perform the update just…
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answers58
viewsList objects by neighborhoods
I have an object where it is possible to add a list of addresses in the address field, the goal is to list the objects according to the neighborhoods where the objects reside. Object: public class…
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answer202
viewsShow template according to user status
I am developing a system but I am having difficulties in the authentication part, or better, not necessarily in the authentication part, but rather in the part to show or not certain content…
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answer464
viewsPass data from Firebase Database to Intent and recover in another Activity
This is the code snippet of my Fragment in which I need to pass a parameter (id of Firebase DB) through an Intent generated by Adapter.setOnClickListener: ...…
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answers152
viewsGeofire updating background location
I’m making an application , the location system is similar to the Uber , who needs to send the location to firebase from 3 in 3 seconds , to get the current location live , but when the app is in…
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answers166
viewsShow first letter textview
I’m taking the Firebase data and putting it into a Reciclerview. And I’m using the Textdrawable library to display the first letter of the text naming in a circle made the gmail app.However I cannot…
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answer57
viewsError of Keys Firebase
I’m doing a PWA using Vue and Quasar, but when I make a request in Postman to appear a push notification I have the following return in Postman: { "multicast_id": idMulticast, //removido por mim ao…
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answer2070
viewsError: Uncaught (in Promise): Error: PERMISSION_DENIED: Permission denied
I’m doing an application with Ionic 3 and Firebase, where there’s crud. My problem is that I am trying to save the data, but when saving it shows that I do not have permission. What I should do?…
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answer214
viewsHow to wait for the result of a Firestore query?
My problem is this: I have a component that will list some categories, example: categories: Observable<any[]>; ngOnInit() { this.categories = this.categoryService.getAll(); } In the service I…
javascript firebase typescript angular firebase-databaseasked 6 years, 11 months ago Isaias Tavares 291 -
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answer337
viewsRecover user name and email in Navigationdrawer?
How do I recover the name and email of the logged-in user? I’m using Firebase BD. public class MenuActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener {…
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answer119
viewsVue-router + firebase
I’m trying to make a login system with Vue and firebase, but I’m having trouble redirecting the user after authentication: login: function () { firebase.auth().signInWithEmailAndPassword(this.email,…
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answer1389
viewsRecover Data from Firebase in Recyclerview
I need to recover from Firebase in Recyclerview user order requests in a way that organizes these requests in a list without overwriting the other one. For now my list is static. Each user has an id…
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answers39
viewsPassing data with Linearlayout onClick
In the software that I am developing when client click on an item in my Recyclerview, I would like you to call another Activity showing the item photo, price, description and would have him choose…
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answer109
viewsExchange of information between Recycleviews
I have request tabs where "RECEIVED" retrieves data from Firebase BD inside a Recycleview. Request made by a user and received by the company. Now how do the items below: 1 - The company…
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answer210
viewsIncompatibility of firebase version with google services
Error:(40, 0) All firebase Libraries must be either above or Below 14.0.0 The error comes down to this. I have tried to solve it in many ways. I have never found a solution. The mistakes were…
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answers994
viewsRecover an image in firebase Storage and display in the app using GLIDE
I’m trying to recover an image from Storage of Firebase using the Glide, I searched in many places, I used the code the way I’ve been seeing and yet I couldn’t recover the image at all. Attached…
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answers1048
viewsFirebase - An unknown error occurred while creating the project. Try again
I tried to create a project in Firebase and I can’t, I’ve tried several different ways (changing the name of the project, changing the country, trying with another Google account... etc.) and still…
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answer67
viewsReceive Radiobutton value in Recyclerview
good night. I would like your help in a problem that I’m having, I’m developing an app for a college job, in case I’m going to have an Activity that will have a kind of research, or quiz, as you…
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answers100
viewsHow to generate random Firebase items inside a Firebaserecycleradapter - Android Studio
I’m having trouble generating random items received by Firebase, I read the documentation but I was confused. I want you to replace the items inside the FirebaseRecyclerAdapter according to the…
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answers45
viewsError calling firebase function with javascript
I’m developing a website using firebase. I’m right at the beginning but have faced problems. The login is going normal, but the registration is not. The error -> "Uncaught Typeerror:…
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answer132
viewsAfter recovering the objects with Valueeventlistener the List does not retain the data
I’m doing an Activity, which searches in Firebase the User objects, traversing a Hashmap with Valueeventlistener to display the result inside a Recyclerview. The first Log returns the Arraylist…
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answer440
viewsConfirm registration password Ionic 3
I have a registration form on Ionic 3, but I can’t validate the password with another ion input. Register.html: <ion-item class = "log-input"> <ion-label floating>Email</ion-label>…
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answers608
viewsHow to pass values created by ngFor as function parameter Ionic 3 + Angular + Firebase?
it’s my first time asking on the forum so if I’m doing something wrong please correct me. I have the following excerpt from my HTML page: Request: <ion-list *ngFor = "let p of produtos |…