You've already logged into App Inventor with your Google Account, created a new project, named it Fling, and learned how to navigate the Designer screen. It's time to create your first mobile app!
Tip
Since this is a tutorial, we will explain the way to play our game. But, if you were starting from scratch to create your own game, you would want to make sure that you've put in the time, effort, and energy to figure out what you want it to do and what you want it to look like. We outlined the design process for mobile app creation in Chapter 1, Unleashing Creativity with MIT App Inventor 2. This may be a good time to review it.
The object of the Fling game app is to fling a moving ball with your finger to prevent it from hitting the bottom edge of the screen and ending the game. When the Play button is clicked, the ball will start moving from top to bottom. If it hits the bottom edge of the screen before the user flings it away, the game will stop and a Game Over notice will...