App Inventor
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Properties | Memory slots for storing information about the component.
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| Behavior | How the app should respond to events.
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| Functions | Things you can do to or with a component.
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| Call | To make a function happen.
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| Event handler | To call an event and the set of functions performed.
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| Timer event | An event triggered by the passing of time.
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| Variables | Information stored in memory slots.
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| Main types of components | Visible and non-visible.
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| Non-visible components | Components you can't see.
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| Visible components | Components you can see.
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| User interface | Buttons, text boxes, and labels.
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| Components designer | Specifies the objects of the app.
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| Blocks editor | Programs how the app responds to user and external events.
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| Linear sequence | A traditional app follows the linear sequence such as A, B, C.
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| Persistent data | Data that is retained even after an app is closed.
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| Web-enabled apps | Apps that communicate with the Web by sending requests to web service APIs.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
2014084
Popular Computers sets