How to ask a question (open new topic)

Before you ask a question / open a new topic
please take care of the following points:

  1. The forum was previously searched for similar topics / issues.
  2. Give a precise (detailed) description of
    • the issue / bug,
    • the goal.
  3. Show the (relevant) blocks (images, screenshots of blocks in high quality).
  4. Debug your blocks (connect to Companion and right mouse click: → Do it).
  5. Name the Android version running on your (test) device.
  6. Do not open multiple threads on the same topic.

Note: Make it as easy as possible for those who are helping. Especially:
→ Write in English and
→ use English blocks (set the language in the Designer - temporarily - in English).

to 3: get an image of your blocks (→ right mouse click in Blocks area)

or use the Snipping Tool from Windows etc.: grafik to get only some blocks.

to 4: debug your blocks

Connect your device to Companion and make a right mouse click in Blocks area on a specific block:

For more details

Getting Help on the App Inventor Forum

How To Ask Questions The Smart Way

Checkbox checked
No me deja diseñar aplicaciones
To make make sprite collide with certain color in background image
Import a screen from another app
Put an app inside an app
Gallery no me funciona
Телефонные звонки
Pictures from Gallery
Service and Characteristic are not published by the connected device { Arduino Nano 33 BLE Sense }
Error 9009 when taking pictures
.aab sign problem
How Do I Use A Small Font Size In Questions And Answers?
Ask for permission
database connection and data update in the given row
When pressed the quit button it will crash
Android 11 and tinyDB
PIC-associated webviewer can be deleted without warning
Qr : Read and Create Qr/Bar Code offline
App inventor user interface modification
Keystore- keystore
My app got a error of file being corrupt
About opening other screen
Package name - how do you set a custom package name?
Pro camera: The pro custom camera
Set Button. text or component to
Error de servidor: no se ha podido realizar la compilación. ¡Por favor, inténtelo mas tarde!
Unable to proceed on with the coding
Non riesco più a far caricare il file CSV dalla mia app
WebView Filepicker
Deficiency of vitamins into deficiency of vitamins in human
My list view do not show in my phone
Phone component doesn't seem to place calls // Pixel 3
Open screen is not working in build file
Help with change in default background image to canvas
Cerco aiuto per creare un cerca da inserire
I wonder how, I wonder why
Firebase DB App crash
Error message in ImagePicker
Pls reply fast bug error
Package name - how do you set a custom package name?
Error al subir los medios
How do I make a card game war in my app inventor?
Problem regarding .aab files and .apk files
How do I solve this problem?
Initialize not working while going to other screen in APK
ScanView And QR toghether work?
Why is it showing a bug happened when there aren't any bugs
Stop Screen Switching
Convert Unix Timestamp
Asking Permission By The User
Capture Phone Numbers?
Solve The Error 1004
Voice recognition translate to hebrew
Webview string not working
Does Anybody else got problems with this! RESULT_CODE_HUNG
Possible accuracy issues in clock timer
Please, help me with recognize simple sounds
Hi! Can you support me?
My app can´t read files from portable sd card
Como cambiar el nombre por defecto de las fotos del elemento camara
Hello everyone . I am taking a input from a textbox and i want to check its every word if it appears in a list
I need the source code to use my smartphone as a camera
Cannot start recording: setAudioSousefailed
Convert binary use 8 switch
Button color doesn't change on enable/disable
FirebaseDB apk file not working
Errore: l'applicazione MIT AI2 Companion si è bloccata in modo anomalo [Error: The MIT AI2 Companion application has crashed]
Creating default screen
My App Inventor is glitching
Runtime error. Who can help me?
The operation Elements cannot accept the arguments Issue with CloudDB
API KEY USE (air quality app)
Saving information in Firebase to specific accounts
Selects the item at the given index in the given list
Store multiple data in firebase
Why my installed apk on samsung tab a6 doesn't work properly
How do I resize an image sprite?
Ottenere codice
No se instalo la app
Trouble with Permissions and Code Execution at the App Front End
Why doesnt my code work
ursAI2 Fail to read Subcribe topic
Invalid Screen: screen3
ZoomImage Pro Extension
Hola alguien que me ayude un poco
Why is my game crashing
Slider Help with Button
A little question
Annoying sounds repeating roughly once per second,
Google Sheet Calculation
Error while inserting empty textbox
Como hacer un pasador de diapositivas automatico y deslizando
Como resolver o problema do assistente AI
Exported .Apk not working for me
How do I create a very large list of 5000 items?
Does not work anymore with Android 11
Exported .Apk not working for me
How to builder convert offline to online
Mi aplicacion se congela
A beginner start to bulid an application using MIT to control the movement of the robot connecting to Raspberry pi
Problem after downloading the app
Text content larger than size of arrangement is displaced upwards
Connection to AI Companion
No suena sonido (Urgente!)
Date in app is effected by the locale language of the phone
Help for File component
Help for File component
How do I fix the error from companion?
If MIT App Inventor Community supports Android 11
Companion Crashes as screen changes
Hola cuando importo muy keystore personalizada y voy a generar muy apk me da error
How can I change my background image in vertical arrangement?
Listview, variable y tinydb
Pie Chart update automatically
How do I add a refresh button? ( terminate a TextToSpeech message )
Reddit Browser Help
The operation + cannot accept the arguments. [ " / Q"] , [1]
Newbie question - what's the code behind?
How do I remove vertical scroll in webviewer?
Form with data like csv in Tinydb
I can't rename my project after it is made!
File location of saved data files
Help with list(possibly)
The operation elements cannot accept the arguments
Problem in use my app
Bug screen help me
Cloud db probolem (using LocationService extension in the background)
Missing sound in mp3 player
The apk don't find csv files in the phone
Bug issue this night
Webserver not working
My job name is wrong
Rtsp stream from phone camera
Menu lateral desplegable
Need help with listpicker
Problem with Android 11 accessing Storage
report this app in my mi mobile ? miui bug report
Simulation Game on Voting
Drawing graphics from google sheet to the application
L'APK geenrato per android non funziona su tutti gli smartphones
Now playing within my radio app
Now playing within my radio app
Text labels not loading in the Companion App
Error 801 MIT App Inventor
Help with transfer from tablet size to phone size
Project Question
App não funciona no android 10
Project for tomorrow (Firebase DataChanged event not working)
Sending already saved Images
Uygulama İçi Veri Kaydetme [Saving In-App Data]
Qr code doesn't work
Uygulama İçi Veri Kaydetme [Saving In-App Data]
L'app appena creata non funziona su huawei P smart +
DynamicComponents does not show the images in the compiled APK
Storing files in device
Notifier probleem
Cotação dolar- please help (Dollar exchange rate)
ta giving this bug all the time. help :(
How can I download?
Photo Gallery for Hairdressers App
Image And Address
Video streaming on app by using webcam
Hi best community [Where do I find the tinydb files on my device ?]
How to change path upload file and delete button
Examples for download
Commande relais
How do I insert select functional in alarm extension
How can I open a screen with a spinner?
Help with problem solving
Errors that constantly appear in the application
The operation Line Width cannot accept the arguments: , [""]
Open a screen for the first time using TinyDB
Firebase Crashes my app
The application does not start
Click durch eine List
Copy and pate at app
"PROCV" na tabela CSV para obter dados
Multiple files upload function is needed
Share cannot find specified mp3 in device
All of the images become the same size
Firebase error only en apk
Radio app suddenly not playing my live stream radio
Cambiar namespace a tinybd
Is it possible to add an error to a textbox if it's not filled?
How can use on button
Runtime Error when I try to save data
Blocks are not connecting for the or & and logics
Nao estou conseguindo mostra os dados que salvei no tinyBD
App not working,,after installing in mobile
I can't Paste longitude and latitude in properties
TriviaGame app development ,programs not executedThe operation select list item cannot accept the arguments ll Note. You will not see another error reported for 5 seconds help me
Convertir web tienda ecommerce en app
Não consigo executar o meu script php no servidor
List of results
Testing app, Video Black
Use app inventor component?
Screen blinking
Date Picker doesn't work for me
[Suggestion] New animation for opening and closing screens. Slide horizontall right and left
Help needed regarding app asking permission
Select random item from my list
Salvare un file
Run an appinventor project as service in background
Rooms and Murders - my first game. Mistakes?
File component issue (Using Bluetooth, TinyDB to control a Plant watering system)
Can I see how many times I scanned my app?
Is it possible to see images from the spreadsheet google?
Property setter was expecting a component but got a IntNum instead
App not open used in admob components
PROCV no app inventor
How to Connect Dynamic List View With Google Sheet?
Problem with Back button
Qr code scanning
How do I create a word search button?
Problemas al cargar imagenes
Where to find the "open another screen" block?
Consulta a la base de datos tinydb
How to change upload media path
Help With Save File
Is it possible to have tags with the same name firebase?
Display firebase data time to time
App inventor 最新工具包在哪有下载
Random number adding from a list
CollidedWith image
Compatibility with phones
Double line creating
How do I read and display datas from google sheet from scanned QR CODE?
Inventory App: Screen doesn't initialize with values from tinyDB
Sending SMS message: uid 10159 does not have android.permission.SEND_SMS
A non application specific directory maker
My app not working on any smart phones
How do I stop a ball from crashing the app when it hits the edge of the canvas?
Data export problem from tinydb in android 10
Codes For Users To Upload and Download Images From Canvas
Authentication server error
I need help with Firebase data changes
Where can I find the extensions directory?
Water level monitor
How do I make a list with prices?
Kết nối Bluetooth
Companion: 2.56 or 2.56u needed
Help with tinyDB please
Duplicate image indexing problem
Im getting this page isn't reponding
update api level 29 mit ai2
M3u player in appinventor2
How can I play music when returning to a screen?
How do I choose list currently used from two lists?
Clock component problem?
How often does the music play?
Notifier component - To close without notifier.after.choosing
My app cant go to the app why
¿Cómo puedo guardar una foto en mi galería después de tomarla con la aplicación que ya cree?
AppInventor Support Android9
小妹想请问下 app Inventor最新服务器地址 有谁知道
How do I search google map using textbox component
Problem happened in making xylophone (record & playback)
If condition not satisfied
How do I put buttons or labels into repeat cycle like for each number ... do?
Stop button press sound
Slider incrementing by Timer?
Gif on another screen
Order instructions
Mit app inventor
Help me guys (Runtime error with any component block)
Canvas draw text displaying
"file" program statement?
The phone screen displays a paragraph of text?
Welcome Can you help me with my application to a program app inventor
Error 1101- Unable to get a response with the specified URL
Fixing marker infobox
Thanks a lot for telling me
Sorting App blocks
Call to 'set-and-coerce-property!' has too few arguments (3; must be 4)
How can I solve the error build failed
I want to show an image in whatsapp
The position y of an object is changed for no apparent reason
How to Delete the data Spreadsheet using app Script
Error de ventanas
I have a few questions
How to retrieve several user values?
Can we create a list of Boolean variables in app inventor?
This app does not work
Error: the application loops on the home screen when I open it on my phone
How to make this? (Convert AI1 Classic Blocks to AI2 Blocks)
小妹想请问下,有没有 按手机音量加减键发送信息的接口
Timepicker Minuten less than 10
Hardware integration (with an Arduino) and App Inventor
앱 인벤터에서 앱 등록 후 앱이나오지 않네요 (The app does not come out after registering the app in App Inventor)
Error from companion
This APK contains code Java or Kotlin, which can be obfuscated
I can't download an apk file
Letters Disappearing On Buttons
Web links issue
Runtime Error Error from Companion: Attempt to invoke virtual method 'java.lang.String java.lang.String.toLowerCase()' on a null object reference Dismiss
Where can i find IF THEN event
Text box not responding
How to save read and retrive multiple data with tiny db
Same screens were overlapped when press device back button
No crea el apk de mi Proyecto
Using BlueStacks to run an app on my PC (and save data to the PC)
Is there anyway to dismiss notifier on another screen?
My application opens by itself!
Missing Sprite when download the apk. Everything works perfectly on emulator. How can I solve the problem? Thank you
Need help:clouddb data shown using a listpicker/view
AppInventor does not generate the .apk file of my project, any solution?
Como puedo llamar datos(Folio) a un campo de texto en app inventor (How do I generate a folio number in the app and that it can be consecutive)
Please Help, Making My Own Builder Through App Inventor
Notifier width grows when used the second time
Tengo problemas con mis bloques
Mostrar en una lista
How to add the seconds in a alarm
How to use math formula given
Filter by Criteria Function
Keyboard send automatic enter code
Creation de fichier .txt
Screen orientation margin
Reset text blocks automatically
I want a message to be displayed after logging in to the app for the first time and to display this text for reuse
Time sensor use too much RAM
How can I make easily homepage of same contents' app made by appinventor?
Line break in txt file
Duration between two saved instances from time picker(s)
AI companion showing images but APK failed to load
How to button search for MIT in my app
I need help with making a chat app using TinyWebDB
Read data frome firebase in mit app invertor
No me muestra los bloques me pone todo blanco
Issue in retrieving data from firebase onto MIT app
How to make links
Music Maker App
Ble no visualizo
Questions that the user was wrong
Need help to make button reading url from google sheet
Unable to upload images
Ai2 application has stopped
Hello, in the beginning, when the program opens, it continues to open and vibrate the screen and does not allow navigation
Why can't change a sound?
How can I convert text to "number"?
Error 908: The permission READ_INTERNAL_STORAGE has been denied. Please enable it in the Settings app
Can someone help me please it means a lot to me:)
Encontrar arquivos que foram salvos no armazenamento interno do smartphone?
My app keeps crashing?
I can't save a csv file in one of my device
Have green bar on laptop, Once connect with phone everything go left
Error 908: Permission Denied
select list item: list index too large select list item: attempt to get item number 1 of a list of length 0: () end application " em portugues
Can not write text file
I’m late I have to submit the app today night
Sorting numbers and multiply each numbers
Invoking the event handler twice is giving warning and project does not execute
Arduino connect serial
List as a Sentence
How to delete app (with 65 screens)
The operation select list item cannot accept the arguments: , ["Problema"], [1] Note: You will not see another error reported for 5 seconds
Bluetooth client speed and buffering issue
Gif animated Extension. Clickable. Transparent Background
Aggiungo o sostituisco il file .apk
Firebase mit issue
Functionalities that allows the MIT app (to book an appointment)
Error 509 : Unable to accept a connection from a bluetooth device
Advanced stopwatch
Problem with finding Block
Copy and paste feature
Labels and texts are not visible to app inventor companion
Unable to send text via bluetooth after selecting an option at spinner
MIT App Inventor doesn't work properly, "Ooops! We tripped on a Bug!"
Set minimum API to 21 (Android 5.0)?
Tengo una duda en una programación
Remote start Trigger
Text size in blocks
Some apps doesn't work with Xiaomi Redmi 5a
Save a TXT file transfer from Arduino using Bluetooth
Cambiar de ventana
Default app (not deep linking)
Data History Errors
Source app inve
Android device issue
Open another screen with start value stopped working
Additional function implementation
Displaying a page in an application
Displays phone number without the name and I wish the name could be added
Problem regarding attaching a text file for reading from app
Time counter in Mit App Inventor
Doodle App - Save As - How to Save in the internal storage of the device?
File Access Problem
Bluetooth app stopped working after update
Problem with July 30 2020 Version: nb184 no longer able to write and read files
I want to build a multilanguage app but i am facing issues
User interface help
Set tag to a list
Question of block
Checkbox box color
App Inventor App crashes when pressing a special button
Help: Adding more functionality to my cloud-based chat app
Syntax Error: quote in unquoted cell. Cannot parse text argument
Help For Adding time
Having trouble with function "start at" in text section
Problem facing in making notepad
Problem with the final app
Trying to insert Taifun Alarm but not happening
My project cant not build... :"(
How to change Bluetooth Name From My App
Can i play mp3 music file from google drive link in my apps?
Bug MIT APP Inventor: An internal error has occurred
Creating a fitness app
Bluetooth Client and Bluetooth Server Problem
Sending data to Google Spreadsheet
Can't connect to the bluetooth
Canvas size not working
POST ing small files problem
Adding traditional codes to app inventor apps
POST ing small files problem
WEB is not working with my list picker
Adding traditional codes to app inventor apps
Im so sorry but why i dont have command new game :( now i cant do next step on X-O
Daily Time Sheet
Can the web browser access my phone files
How to get Redis Server Code from RedisLabs for CloudDB
Run time error (Attempt to get item number 2 of a list of lenght 1)
Когда возникает runtime error?
Perform a download
Acessar subpasta no Storage
Does not let me build
No guarda el archivo TXT
Crear menú desplegable para cámara o buscar archivo
Adding a link to a button
How do I make music play in my app using urls or mp3 files?
Is this code ok? I want an easier way to save images using tiny db
About sound track
A confused geek in need of help

You can also use
WindowKey + Shift + S
for capturing blocks.



Only since Windows 10.


Corrected to "Snipping tool" from "Sniping tool"
(a.k.a. The original Sniping Tool)


When asking a question start with:

How do I... or How can I... or How do you....

Do not start a question with How to.. - this infers a guide or tutorial on how to do something

and finish with a question mark (?)