🌟 App Inventor Examples 🌟

This repository showcases Example Projects built with MIT App Inventor, covering key concepts like IoT, Hardware Interfacing, GPS Tracking, and Real-Time data handling. These examples are perfect for Beginners and Educators seeking to explore mobile App development and No-code programming.

MIT App Inventor is a great tool to introduce beginners to Android App Programming. It is an open-source, Cloud-based Programming Environment that allows you to make your own mobile apps using a Blocks-based Programming Language. With these beginner-friendly tutorials, you will learn the basics of programming apps for Android and iOS phones and tablets.

Important

You access App Inventor using a web browser (Chrome, Firefox, Safari).

Note

The App Inventor platform is developed by the Massachusetts Institute of Technology (MIT).

It is composed of a DESIGNER section where you visually design your app layout and a BLOCKS section where you include the code to run your app.

Warning

This is a warning.

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✨ App Inventor Features

🌟 Feature	📋 Description
🛠️ User-Friendly Interface:	Visual learning with immediate feedback, allowing for a hands-on experience.
📱 Creativity & Problem-Solving:	Engages users in creative projects while fostering logical thinking and innovation.
🌐 Real-World Applications:	Develop practical skills that create a solid foundation for future learning in real-world tasks.
📡 Real-time Data Handling:	Build apps with cloud storage and live updates for seamless real-time experiences.

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✨ Tools and Resources you will need for the total processes:

💻 A Mac or Windows computer: The main environment for building your apps. 📱 Smartphone or Emulator: The device where your apps will be installed and perform. 🌐 A Wi-Fi connection: To use the platform and access necessary resources. App Inventor Platform: The main environment for building your apps. 🔑 Google Account: Required to log into App Inventor.

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🔑 Keywords

MIT App Inventor, IoT, Mobile App, Android App Development, GPS, Sensors, Bluetooth, Arduino, IoT Applications, No-Code, STEAM Education, Educational Tools, Block-Based Coding, Cloud Services

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🛠️ How to Use App Inventor

Follow this step-by-step guide to get started with MIT App Inventor and begin building your own apps!

Step 1: Set Up MIT App Inventor

1. Visit the official website: MIT App Inventor.
2. Click on Create Apps! to open the App Inventor development environment.
3. Log in using your Google account to access the app creation dashboard.

Step 2: Create a New Project

1. On the main dashboard, click Start New Project.
2. Enter a project name, like MyFirstApp, and click OK.
3. You’ll be taken to the project workspace, where you can design your app.

Step 3: Design the User Interface (UI)

1. In the Designer tab, drag and drop components (e.g., buttons, text boxes, images) from the Palette on the left into the Viewer.
2. Customize each component’s properties (e.g., text, color, size) using the Properties panel on the right.

Step 4: Add Functionality with Blocks

1. Switch to the Blocks tab to create the logic behind your app.

2. Drag blocks like When Button1.Click from the component list and add logic or control blocks to perform actions such as changing text, displaying notifications, or interacting with hardware.

   
   Block-based coding interface

Step 5: Connect Your Device

1. Live Testing: Test your app on a real device using the MIT AI2 Companion app:

   • Download the MIT AI2 Companion from the Play Store.
   • Open the app, and in App Inventor, go to Connect → AI Companion.
   • Scan the displayed QR code or enter the code to sync your device for live testing.

2. Emulator: Alternatively, use the built-in emulator by clicking Connect → Emulator.

Step 6: Build and Test the App

1. To export your app as an installable APK, click Build → App (save .apk to my computer).
2. Once the APK is generated, download and install it on any Android device.

🎉 Tip: You can use AI-powered cloud services like Firebase for real-time data synchronization.

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🌟 Let's Make a Simple Game on MIT App Inventor 🌟

1. Open a blank project

1. Start a New Project: Create a new blank project.
2. Add Canvas:
   • Go to Drawing and Animation and drag a Canvas element.
   • Rename it to MyCanvas.
   • Set its dimensions to 300x300.
3. Add Score Label:
   • Drag a Label from User Interface.
   • Rename it to ScoreLabel and set its text to Score: ---.
4. Add Reset Button:
   • Drag a Button from User Interface.
   • Rename it to ResetButton and set its text to Reset.
5. Add Timer:
   • From Sensors, drag a Clock element to the screen.
   • Rename it to MoleTimer.
   • Enable the Timer and set TimerInterval to 500 ms.

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2. Add an ImageSprite

1. Add the Mole Image:
   • From Drawing and Animation, drag an ImageSprite to the MyCanvas element.
   • Download and use a mole image for the sprite.
2. Set Properties:
   • Ensure Enabled and Visible options are checked.
   • Set Width and Height to automatic.
   • Set Speed to 0.0.

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3. Move the Mole

1. Create MoveMole Procedure:
   • Switch to the Blocks screen.
   • From Procedures, drag out a procedure block and name it MoveMole.
2. Set Mole X-Position:
   • Drag a set Mole.X block.
   • Attach a multiplication block from Math and use a random fraction block for the first value.
   • For the second value, use a subtraction block.
     • Left side: MyCanvas.Width.
     • Right side: Mole.Width.
3. Set Mole Y-Position:
   • Repeat the above steps for the Y-position but use MyCanvas.Height and Mole.Height.

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4. Create UpdateScore Procedure

1. Initialize Score Variable:
   • In the Variables tab, create an initialize global block for score and set its value to 0.
2. Set Score Label Text:
   • Create a new procedure named UpdateScore.
   • Use the set ScoreLabel.Text block.
   • Attach a join block from Text.
     • First text: Score: .
     • Second text: global score from Variables.

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5. Trigger MoveMole with Timer

1. Use Timer Event:
   • Get the when MoleTimer.Timer block.
   • Inside it, call the MoveMole procedure.

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6. Update the Score on Mole Touch

1. Set Up Mole Touched Event:
   • Get the when Mole.Touched x y block.
2. Increment Score:
   • Drag the set global score block.
   • Attach it to a Math addition block.
     • Add get global score from Variables and 1.
3. Call Procedures:
   • After incrementing the score, call the UpdateScore and MoveMole procedures.

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7. Make the Reset Button Work

1. Set Up Reset Button Click Event:
   • Get the when ResetButton.Click block.
2. Reset Score:
   • Set global score to 0 using a Math number block.
3. Call UpdateScore:
   • Call the UpdateScore procedure.

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🎮 Congratulations! You've created a simple game using MIT App Inventor!

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🌟 Advanced Tips and Enhancements 🌟

Taking your Mole Mash game to the next level can be both fun and rewarding. Here are some advanced tips and enhancements to make your game even more exciting:

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1. Save the Game State

Why: Saving the game state allows players to resume their progress the next time they play. This is particularly useful for tracking high scores or other persistent game data.

How to Do It:

• Use TinyDB, a database component in MIT App Inventor, to save and retrieve the score.

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2. Add Sound Effects and Music

Why: Sound effects and music make the game more immersive and engaging.

How to Do It:

• Use the Sound component in MIT App Inventor to add sound effects and background music.

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3. Create Interactive Elements

Why: Interactive elements enhance gameplay and make it more enjoyable.

How to Do It:

• Add buttons or interactive objects that players can click to perform actions, such as:
  • Starting a new game
  • Pausing the game
  • Accessing a help menu

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4. Implement Power-Ups and Bonuses

Why: Power-ups and bonuses add an extra layer of strategy and excitement to the game.

How to Do It:

• Create additional ImageSprites for power-ups.
• Use conditional statements to check if the player has collected a power-up and apply its effects.

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🚀 With these advanced tips, your Mole Mash game will be more engaging and fun! Enjoy enhancing your game!

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✨ APP INVENTOR CONTROLS:

DESIGNER

The first section called Palette includes all the objects and layout options you can choose and drag onto the screen, that is media, buttons, text labels, images, timer, etc. The central is the Viewer, that is the visual rendering of your phone screen. Close to the screen, you can see the Components window, where you will see all the objects you added to your screen. In the beginning, you will see just “Screen 1”. The last section on the left, Properties, regards all the options you can choose to change the attributes of the object you have included in your screen. For example, here are the options for changing your Screen1 attributes like background colour, background image, title, alignment.

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Basic styling {#basic-styling}

• #exr
• #c5f015
• #1589F0

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🧪 Project Examples

Explore these real-world projects to see how you can integrate hardware with App Inventor:

1. 🚀 IoT Temperature Monitor

   • A project that reads temperature data from a sensor and displays it on an Android app via Bluetooth.

2. 🌍 GPS Location Tracker

   • Tracks and displays real-time GPS data on a map interface within the app.

3. 🤖 Bluetooth-Controlled Robot

   • Control a simple robot using an Android app and Bluetooth commands.

IoT projects are a great way to learn hardware interfacing using App Inventor.

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📚 Tutorial References

• Getting Started with MIT App Inventor A comprehensive guide to help you begin your journey with MIT App Inventor.

• Build Your First App Step-by-step instructions to create your very first mobile application.

• MIT App Inventor Documentation Official documentation containing detailed information on all features and functionalities.

• Connecting to Bluetooth Devices Learn how to establish a Bluetooth connection between your app and hardware devices.

• Using the Location Sensor A guide to using GPS location data within your applications.

• Creating a Simple IoT App Instructions for building your first Internet of Things (IoT) application.

• How to Use the Firebase Database Learn how to integrate Firebase for real-time data storage and retrieval.

• App Inventor for Educators Resources and strategies for educators looking to teach app development.

• Advanced Features in MIT App Inventor Explore advanced functionalities to enhance your applications.

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📌 Tags

MIT App Inventor, Mobile App Development, IoT, Hardware Interfacing, Sensors, Bluetooth, GPS Tracking, Real-Time Data, Arduino Integration, Robotics, No-Code Development, Cloud Integration

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⚗️ Examples Gallery

More App Inventor Tutorials for Beginners

Designers Interface	App and QR Code	Pallets, View and Properties
Online Emulator	Tutorial image	Starting Screen
Tutorial image 1	Tutorial image 2	Tutorial image 3

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A list of things:

• Googley Eyes
• Tesco Clubcard
• The Elizibeth Line
• Beans on Toast
• My Current Account

Collapsable Title

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