MIT App Inventor Set Up

Welcome to the start of our Pioneer Batch Class.

Before we come to class, let’s get started on a few things. Let us get started with the set up.

If you are using an Android device and you have a wireless internet connection, you can start building apps without downloading any software to your computer. You will need to install the App Inventor Companion App for your device. This is the Option Onewe are using for this class. This option is STRONGLY RECOMMENDED. If you have any problems with this, place your comments below.

Connect your Phone or Tablet over WiFi

You need a gmail account.

You can use App Inventor without downloading anything to your computer! You’ll develop apps on the website: To do live testing on your Android device just install the MIT App Inventor Companion app on your Android phone or tablet.  Once the Companion is installed, you can open projects in App Inventor on the web, open the companion on your device, and you can test your apps as you build them:

Step 1: Download and install the MIT AI2 Companion App on your phone.

Open your device’s QR code scanner and scan the QR code on the left below to download the Companion App from the Play Store. If you can’t use the Play Store, use the QR code on the right to download the Companion App directly to your phone.

or click this link

If you need a QR code scanner, you can get one at the Play Store (e.g., ZXing).

After downloading, step though the the instructions to install the Companion app on your device.You need to install the MIT AI2 Companion only once, and then leave it on your phone or tablet for whenever you use App Inventor.

Note 1: If you are unable to use the QR code, you can still install MIT AI2 Companion on your phone or tablet. Use the Web browser on your device to go to the Google Play Store; look for MIT AI2 Companion in the store. Once you find Companion, click the INSTALL button for the Companion app.

Note 2: If you choose not to go through the Play store and instead load the app directly (aka “side load), you will need to enable an option in your device’s settings to allow installation of apps from “unknown sources”. To find this setting on versions of Android prior to 4.0, go to “Settings > Applications” and then check the box next to “Unknown Sources”. For devices running Android 4.0 or above, go to “Settings > Security” or “Settings > Security & Screen Lock” and then check the box next to “Unknown Sources” and confirm your choice.

Step 2: Connect both your computer and your device to the SAME WiFi Network

App Inventor will automatically show you the app you are building, but only if your computer (running App Inventor) and your Android device (running the Companion) are connected to the same WiFi Network. See a more detailed explanation of this here.

Step 3: Open an App Inventor project and connect it to your device

Go to App Inventor and open a project (or create a new one — use Project > Start New Project and give your project a name).

Then Choose “Connect” and “AI Companion” from the top menu in the AI2 browser:

A dialog with a QR code will appear on your PC screen. On your device, launch the MIT App Companion app just as you would do any app. Then click the “Scan QR code” button on the Companion, and scan the code in the App Inventor window:

Within a few seconds, you should see the app you are building on your device. It will update as you make changes to your design and blocks, a feature called “live testing”.

If you have trouble scanning the QR code or your device does not have a scanner, type the code shown on the computer into the Companion’s text area on your Android device exactly as shown.  The code is directly below where the screen on your PC shows “Your code is” and consists of six characters.  Type the six characters and choose the orange “Connect with code”.  Do not type an Enter or carriage return: type just the six characters followed by pressing the orange button.

Now the above information is found here

But I have placed the information here for convenience and reference.

After you finish the setup, comment below so we can move on to the next step. If you have any problems, comment below too and let’s see how we can help each other.


I have added –> Step 2

9 Responses to “MIT App Inventor Set Up”

  1. Roger Chua Ching Ching October 13, 2014 at 6:59 pm #

    I have completed

  2. Jasper Poh October 13, 2014 at 7:43 pm #

    I have completed

  3. matharena October 13, 2014 at 9:24 pm #

    That is Great. Step 2 coming up … Make sure you like this page so you can get updates.

  4. Sharan October 14, 2014 at 10:12 pm #

    I have completed

    • matharena October 14, 2014 at 10:20 pm #

      Very Good Sharan, go to the next step and make your first app. Let’s make sure things are working.

      • Christopher October 20, 2014 at 4:41 pm #

        I have completed

  5. Daniel Lim November 24, 2014 at 1:11 pm #

    I have completed.

    • matharena November 24, 2014 at 1:29 pm #

      Good Job, move to the next steps.

  6. Daniel Lim November 26, 2014 at 10:41 am #

    I have finished the mini golf.

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