Most voted "firebase-database" questions
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answer88
viewscom.google.firebase.database.Databaseexception: Failed to Convert a value of type java.lang.String to long
Error I’m wanting the Android app to take the data from Firebase and show them in a list and this is the error. com.google.firebase.database.DatabaseException: Failed to convert a value of type…
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answer275
viewsQuery search android studio, firebase data listing problems
Could someone help me? The app recovers data from child("grupos") in debugging, but when I tie the knot, for example, child("grupos").child("nome"), the application of crash nor in debugging to see…
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answer511
viewsHow popular a Database Data Picker (Firebase) - React Native
I’m trying to popular this Picker with BD data (for when the person wants to delete, she choose by title), but it n fills in, and I don’t know if I’m doing it right. thanks for the help! :) export…
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answer439
viewsHow to Fill In My Fields with Data Selected by Picker and Update Data - React Native
How can I make so that when the "title" of the task is selected through the Picker it fills my other fields belonging to this task and can update my data? thanks for your help ;) export default…
firebase react react-native firebase-database reactive-programmingasked 5 years, 7 months ago Nuck 35 -
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answers14
viewsI’m not getting through Firebase
var inputEmail = Document.getElementById('inputEmail'); var inputName = Document.getElementById('inputName'); var addBtn = Document.getElementById('addBtn'); //By clicking the button…
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answer97
viewsQuery firebase field returning null
I am searching for the field (value) in the table (revenue) in the firebase database, but when performing the debug I get the following: V/InputMethodManager: Starting input:…
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answer69
viewsIs it possible for me to record information using one user.uid in firebase?
I have no knowledge about the area, so at the moment I have many doubts and one of them is this: I have a script that the proposal is to get the user.uid when it is logged in via email and password…
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answer233
viewsConnection app with firebase
Good afternoon, I have the following error in my logcat, when trying to register an email and password in firebase Authentication, where it jumps to my "Else" of "Alert" and soon after the error in…
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answer185
viewsSum fields of a Firebase Bank
I need to add the fields of my bank Firebase, that is the field Receita that is inside the collection Dados follows the picture below: I am using the following code to make a simple read, sets to…
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answers171
viewsListeners from firebase database does not run and does not retrieve data, write - java server desktop
There are a few days I’m trying to understand what is happening with my code that I should write and read in Firebase Realtime Database, but without success and there is no apparent problem, error,…
java firebase-database desktop-application realtime-databaseasked 5 years, 4 months ago Wellington DC 1 -
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answer100
viewsWrite user to firebase database
Good afternoon! I am facing a problem to record my user in my firebase database Altime. The scenario is as follows : I have my user creation code using the createUserWithEmailAndPassword method,…
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answers20
viewsHow can Firebsae Realtime NOT load previous data after logging out of the account?
At the beginning of conversation, I am very new in android Java development, however I have a problem with firebase Altime in my application. I turned on . setPersistenceEnabled(true); for it to…
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answer424
viewsConvert Varchar in Int or Int in Varchar (SQL Procedure)
in Procedure there are two fields (Cod_manufacturer(VARCHAR) and Codigo_manufacturer(INT)), a Varchar and an Int, when I do a LEFT JOIN to cross the tables, it gives me a conversion error, I tried…
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answers121
viewsAndroid Studio Firebase Not Entering Data
Does anyone know how to input data into the Firebase Realtime database? My application does not give errors but does not insert anything in Firebase. Note: Database and application are connected and…
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answers89
viewsConsumption given in the Firebase Database
I’m having a doubt that’s making me nervous, and I couldn’t find the answer. On Android, when we’re making an app, usually there are several calls to collect "the same" data from Firebase. For…
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answer191
viewsArduino + SIM800L Connect to Firebase
Galley, I’m putting together a project and I need to connect my companion to firebase. For this I am using a SIM800L, however my code return the error below in the compiler, someone has already gone…
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answer70
viewsCreate a node inside another in Firebase with Android Studio
I would like to create a node called "Posts" within each user, but I can only create outside the user. It could help me to create the node within the user? Here is an example of how I wanted the…
android-studio firebase android-fragment firebase-databaseasked 4 years, 7 months ago Joao Paulo 11 -
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answer132
viewsHow to recover firebase keys? Javascript
Good evening, I have the following data structure: I need to store all these Ids that are children of visits in an array to later create a loop to search for the data that each of these Ids has, but…
javascript web-application firebase firebase-database idasked 4 years, 4 months ago LEANDRO DA SILVA 121 -
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answers11
viewsProblem with state React
I cannot use state helps once the page is rendered. The following error appears: TypeError: undefined is not an object (evaluating 'this.state.ajudas['0']['tipo']') My code: class AjudaScreen…
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answer38
viewsAngular, Firebase Realtime Database, json image
I have a mobile application that stores the photos in a database and sends them in json format to a Realtime Databse from Firebase. I’m developing a web application with Angular, I can get the data…
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answer53
viewsConsultation of collections firebase
I have an angular design and I’m using firebase as a database, but I’m having trouble accessing a collection that’s inside another collection. My firebase project is like this: colection(usuarios)…
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answers114
viewsAdvanced Firebird Join - I can’t join the tables I need and sort in the right result
Good evening guys. I’m on a quest that has been depleting my neurons for a week and I still can’t find the solution. In an ERP used by a client, the demand to visualize purchase value vs sale,…
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answer73
viewsData does not save in Firebase
I’m trying to save data in my Firebase database but the app doesn’t save. I can install, boot the app, and move between pages without an app crash, but I can’t save data. Before implementing the…
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answer188
viewsCan’t Convert error Object of type
This one started to appear out of nowhere, apparently I didn’t change anything in the code and simply by making changes in other parts it appeared. Error: 12-07 07:47:43.652…
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answer16
viewsThe app closes when the user leaves the account
When the user leaves the account the application closes. The problem arose when I changed the rules of the Altime from that { "rules": { ".read": true, ".write": true } } for that reason { "rules":…
android android-studio firebase firebase-database realtime-databaseasked 3 years, 5 months ago izadora 1