FAQ Section: Firebase

Frequently Asked Questions
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Introductory

FireBase Pending Failure Warning - JIS

Brief Intro to Cloud Data and the FireBase Component - HAL

FireBase component help

The firebase console URL is https://console.firebase.google.com/ - @ABG 12/2025

Tutorials

Atomic queue and delete - @TimAI2

Simple bulletin board - @TIMAI2

Firebase Chat sample - Amerikashi

Firebase bus route tutorial - Romin Irani

Firebase Spanish tutorial - kio4

Firebase WhatsAppInventorMIT chat project - Montes

FireBase DataChanged Detection from IOT updated DB - @Juan_Antonio

Pitfalls

Unable to open app with firebase on non-US server - @TimAI2

Firebase Taglist event does not see all-integer tag lists - ABG, TimAI2, ChrisWard, more

Advanced

Firebase with the Web Component - TIMAI2

Firebase ‘Append Value’ Help

Firebase Authentication in App Inventor Using Javascript - Rich Interdonato

FireBase Image Storage and retrieval (extension) - Yaniv

Firebase status dashboard - Google

Firebase: with the Web Component - Secure Rules - TimAI2

Limit your free plan usage - droidim

Uploading Files to FireBase - Thunkable forum

Using your Own Firebase Account with MIT App Inventor - jis

Getting Google Sheet > Firebase > AI2 to work...

Unique Primary Key Generation for FireBase - TimAI2

Working with Firebase Arrays Using the Web Component - TimAI2

Monitoring the Latest Timestamped Firebase entry - @TimAI2

Firebase Storage File Urls to Realtime Database - @TIMAI2

Also see:

Cloud Firestore extension - jarlisson2/FirestoreAIX

Firestore with the Web Component - @TIMAI2

4 Likes
Authentication server error
How to use Firebase in MIT
Firebase with Web Component
Using Firebase to print a list
Sharing files among several unauthenticated users
Obtener valor en desplegable con Web1
:orange_square: Working with Firebase Arrays
How do I make this intervention list for college?
Save Item under Firebase
How do you retrieve select data in firebase and display it in listview?
เราจะนำข้อมูลจาก Firebase มาทำเป็นกราฟยังไง ต้องทำยังไง
How can I make an app like whatsapp?
ESP8266. FirebaseDB. Send. Receive. IDE Arduino
Update news section without reinstall the app
Need help regarding Firebase
Need help regarding Firebase
Need help regarding Firebase
Slowdown in Retrieving tags from firebase in Real-time
I need to learn how to build normal apps
Could someone help me out with implementing a chat feature in my app?
Regarding while do block
Unable to open app with firebase
Pls someone help me send timepicker data to firebase with hours and minutes
How do you display data from firebase?
Firebase not working .. help me please!
Firebase databank
How i can get tags and values in firebase and make compare?
Check if user exist in firebase
Probleme avec Firebase
How do you connect google firebase to MIT app Inventor
App crashing, Please Help
How do you upload data to firebase and then retrieve the data on another screen in mit?
How do you nest sub Databases using FirebaseDB?
How to log and chart data
Firebase Assistance
I need help to make a system of log in and sign in with Firebase
:fire: Firebase Database and Storage: with the Web Component - Secure Rules
It is possible to create these feature of shopping app in MIT app?
How can I connect firebase on my all-existing screen?
Switch screen (save data of my switch)
App crashing with Firebase
Can anyone give me a guide on how toc use the firebase feuture?
Making A list of FirebaseDB
App Inventor working with Firebase database
How do I do inventory control with the inventor app?
How do you get values of a firebase log on MIT App?
Extract data from firebase
Tipos de datos enviados a la Firebase
Help with my vending machine app
Fetch the data from the firebase and show it in the graphs and tables
I want advice on Using Cloud Features in App Inventor
Can you show me blocks of how to arrange list view?
Need help in making "Notice management" app
Help me for this app (firebase data, media playback)
I am new to app inventor, i developed this app and try to use it on my phone but the problem is the app doesn't lunch it shows the app icon and freeze can someone pls help!
How do I append data in the listview with the help of blocks?
How do I create an app like user can share points to another user
Help Me On Firebase Chat App
How do you link the same app on two different phones?
Statistical charts
Runtime error and said "RuntimeError. Irritants: (Cannot find the component: Web1 Problem with application)"
Facing problems with making an airliner 'Top Trumps' app
PLS HELP i have a problem so i was make a quiz app but i need to find how to find dictionaries keys of this type of block but i cant just seem to find it
I need help with firebase
How do you retrieve all existing tags from FireBaseDB?
How do you show QR Codes along with names in a list (ListView or other option)?
How do I set up FirebaseDB?
Does anyone know what this(Firebase Token) is for?
Error runtime : Error from Companion: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
Runtime Error Error from Companion: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
Blank Screen While Launching App!
White screen problem after downloading the application
AsteroidDB - A database service for AI2, based on TinyWebDB
I have created an app for my IOT project by using MIT app inventor, it works fine In AI companion , but when I installed its apk file in my phone then the app is not Starting
Help to create an educational APP
🔥 Firestore: scalable database
Updating label from Firebase
Firebase 'Append Value' Help
Firebase Not Retrieving TagList
Estimated time from one point to another
App Inventor and firebase
Modificar precios? -- Modify prices
Save information
GetTagList does not seem to work
Uploading photos on base
Rename pdf file and submit to firebase
Retrieve data from Firebase and display in listpicker
Where can I find tutorial for Advanced component/blocks in MIT AI2
How do you read simple data from firebase?
Como conectareme a una bd mysql de google cloud
MQTT and Firebase Connection with App Inventor
Firebase storing
I want to send value in firebase to appinventor
Upload images or videos on mit app inventor
[Help] Random Chat App
Reading all data from firebase using MIT App Inventor
Can you help me with my game?
Issue of Firebase Realtime database connect to App Inventor
How can I save data from Arduino using Bluetooth directly to a database?
Firebase and Primary key
Add custom claim to id token
Overwriting data in Firebase
Firebase DB with App Inventor tutorial
Help me please and check my project
Is there a way to upload recorded sound files to a database and retrieve it and play two or more files simultaneously?