By default, when you add components to the App Inventor Viewer they are laid out ___________.
Vertically
Which value would you set the Width property to if you want your component, e.g., a Button, to fill its container?
Fill parent
Which of the following would be a valid App Inventor variable name?
userName
A variable is an abstract symbol that refers to some particular value. Which of the following symbols is a variable?
paintbrush, x
Using a variable is an example of abstraction because
a variable is more general and more abstract than a specific value such as 5.
using a variable instead of a specific value makes an app more generally useful.
a variable is an abstract symbol that can represent lots of different values.
Which of the following is a true statement about data compression?
(D) There are trade-offs involved in choosing a compression technique for storing and transmitting data.
What does refactoring mean?
Restructuring a program without changing its basic behavior.
True or False. An ActivityStarter can be used to start any application that is installed on the device.
True
Which of the following tasks can be started by an ActivityStarter.
Choose all that apply.
Start Google maps and display a location.
Start Google maps and display directions.
Start PaintPot (assuming it's on your device).
Start the Barcode Scanner (assuming it's on your device).
Data stored in a TinyDb will persist between different uses of the app.
True or False: It is possible to have an empty list -- i.e., a list with no elements.
True