What are the events in App Inventor?
There are two types of events: user-initiated and automatic. Clicking a button, touching or dragging the screen, and tilting the phone are user-initiated events. Sprites colliding with each other or with canvas edges are automatic events. Another type of automatic event is a timer event.
What type of language does App Inventor use?
block-based programming language
It uses a block-based programming language built on Google Blockly (Fraser, 2013) and inspired by languages such as StarLogo TNG (Begel & Klopfer, 2007) and Scratch (Resnick et al., 2009; Maloney, Resnick, Rusk, Silverman, & Eastmond, 2010), empowering anyone to build a mobile phone app to meet a need.
What is dictionary in MIT App Inventor?
Dictionaries, called in other languages terms such as maps, associative arrays or lists, are data structures that associate one value, often called the key, with another value.
What is a parameter in MIT App Inventor?
App Inventor and other languages provide a mechanism called parameters for making procedures more general. Parameters comprise the information a procedure needs to do its job-the specifics of how the procedure should be performed.
What are event handlers?
An event handler is a callback routine that operates asynchronously and handles inputs received into a program (events). Nearly all software architectures must include at least some event handling capabilities, if only to deal with out-of-bounds conditions and errors.
What are blocks in App Inventor?
When you create a procedure, App Inventor automatically generates a call block and places it in the My Definitions drawer. You use the call block to invoke the procedure. When you create a new procedure block, App Inventor chooses a unique name automatically. You can click on the name and type to change it.
What is an interactive app?
An interactive app term may be applied to a wide range of applications. Put it simply, it is an application that allows users to interact with audiovisual information via gamification, visualization, and even VR/AR. Basically, every app has some kind of interactivity.
What is Palette in App Inventor?
The Palette (see Figure 3.2) is where you add all the elements that make the app perform any number of tasks. The components are grouped by functionality, making it easy to find the right component.
What are conditional statements in MIT App Inventor?
To implement this in to your app, you would need to use conditionals. Conditionals refer to expressions or statements that evaluate to true or false.
What are the blocks called in App Inventor?
In App Inventor, the first item in a list has an index of 1, the second has an index of 2, and so on. Some blocks have a white plus sign on them in a blue box. These blocks are called mutators.
What kind of programming language is App Inventor?
App Inventor is a blocks programming language. Blocks are the pieces you connect together to tell your app what to do. They can be found in the Blocks Editor. Blockly is the name of the visual programming editor that App Inventor uses to make the blocks in the browser.
Is the MIT App Inventor available on the App Store?
MIT App Inventor for iOS on the App Store. It is with great pleasure that the App Inventor team announces that the MIT App Inventor companion app for iOS is now generally available on the Apple App Store for iPhone, iPad, iPod Touch, and Mac.
What are arguments and behavior in App Inventor?
These arguments are local variables whose scope is inside that procedure or event. An app is said to have behavior. An app’s behavior is how the app responds to user initiated and external events. App Inventor is a blocks programming language. Blocks are the pieces you connect together to tell your app what to do.