App Inventor Tutorials

Top 5 Tips: How to learn App Inventor

How to send a 'Contact Us' mail to a predefined email address automatically

For the example I'm using my Google Spreadsheet solution, which uploads a record into a Google spreadsheet. Everybody who submits a row into that spreadsheet will trigger automatically a message to be sent to the recipient's email address.

How to UPDATE and DELETE rows in a Google Spreadsheet from within App Inventor

This is another enhancement of my Google Spreadsheet solution using some lines of Google Apps Script.

How to use a Google Spreadsheet as Database

App Inventor - MySQL interface

This example demonstrates how to access a MySQL database on your web server with App Inventor 2 and a php script.

App Inventor is no in calculations anymore!

This example solves a simple math puzzle in less than 1 second. A plain App Inventor solution would need several minutes to get the result!

A Sortable List using Drag-and-Drop with App Inventor and jQuery UI

Use drag and drop to order list items manually.

How to create a Pattern Lock Mechanism with App Inventor and some JavaScript

How to use App Inventor and Skulpt to run Python code

A powerful Label Alternative including touch gestures using the Webviewer, some HTML/jQuery and Hammer.js

You can pass any HTML-style markup to the webviewer and display it during runtime of the app. And together with Hammer.js we can add touch gestures to the webviewer!

How to fill out a form of a webpage and click a button using some JavaScript

How to overcome the App Inventor project limit of 30 MB

How to download a file and save it on your device

Download a file from the internet. Also an example of a file download from a Restricted Area is available.

Different eMail solutions for App Inventor

The different eMail solutions for App Inventor are listed here. Also it is explained, how to send an email including attachment.
Now it's also possible to send HTML format in the eMail body!

How to upload a file into your Dropbox

How to work with the advanced features

Using the advanced features makes sense, if you have a lot of the same components (here checkboxes) and you like to execute the same action on them.

A Multiple Choice Quiz: How to work with the advanced features

The recommended method of switching screens in App Inventor

A screen always returns to the screen that opened it. You can get the effect of screens switching to arbitrary other screen by setting up a "manager screen" that is used for opening all the other screens.

Tribblehunter's Multiple Screen Method

Open another screen and at the same time(!) close the current screen. Using this method there is no need of a manager screen.

A simple Bluetooth Chat with App Inventor 2

Both the bluetooth client and server modules are used to create a chat session. Both components are in the same app. The client component will be used for the device which starts the connection, the server component will be used for the device accepting the connection. The devices must have been paired first.

How to refrain your device from sleeping

Use a videoplayer continuously playing an invisible video to refrain the device from sleeping.

How to get the Phone Number of the Device with App Inventor

Unfortunately there is currently no simple possibility to get a user's phone number. However with this trick the app sends a SMS with a authorization code to the phone number entered by the user and can confirm the phone number this way.