Deck 2: Model View Controller, Gui Components, Events

Question 1

If we want to handle persistent data in an app, we can use the Model View Controller ____________ architecture.

Answer 1

Store

Question 2

A Model can be used only in Android apps, not in other Java applications.

Answer 2

False

Question 3

The class that renders a keyboard is ____________.

Answer 3

KeyboardView

Question 4

Two constants that can be used as values of android:layout_width and android:layout_height are ____________ and ____________.

Question 5

To position Views relative to each other, we can use a(n) ____________ (layout manager).

Question 6

It is possible to specify the transparency of a View.

Question 7

A style can inherit from another style.

Question 8

In order to retrieve a View that has been given an id, we use the ____________ method.

Question 9

A CharSequence can be converted to a String by calling its toString method.

Question 10

In order to register a TextWatcher on a GUI component, we call the ____________ method.

Question 11

Which class enables the user to enter text?

A) TextField
B) EditText
C) EditView
D) Text

Question 12

Which class is not a subclass of Button?

A) CheckBox
B) Switch
C) RadioButton
D) EditText

Question 13

Which attribute do we use to specify the margin above a View?

A) margin
B) android:marginTop
C) android:layout_marginTop
D) android:layout_margin

Question 14

What is the correct definition of an item inside a style (assuming that the color abc is correctly defined in colors.xml)?

A) < item name="android:background">< /item>
B) < item name="android:background">@color/abc< /item>
C) < item name="android:background">abc< /item>
D) < item name="android:background">color/abc< /item>

Question 15

When a button is clicked on by the user, we want the method foo to execute. How do we do it (inside the Button element of the activity_main.xml file)?

A) android:onClick="foo"
B) android="foo"
C) android:onClick="@activity/foo"
D) onClick="foo"

Question 16

Button is a subclass of TextView.

Question 17

The Model is the middleman between the __________________ and the Controller.

Question 18

The superclass for layout classes is __________________.

Question 19

The XML attribute that we use to give an id to a View is __________________.

Question 20

The __________________ interface provides three methods that are called when the text changes inside a TextView.