Question 1

The getAction method of the MotionEvent class returns an integer. We can compare that integer to the ____________ constant of the MotionEvent class if we want to test whether the user moved his or her finger on the screen.

Accepted Answer

The answer of The getAction method of the MotionEvent class...

Question 2

The View child is inside the View parent but is under another View, so we can see only part of it. We can use the ____________ method to bring the child to the front so that we can see it completely.

Accepted Answer

The answer of The View child is inside the View...

Question 3

The ____________ method of the GestureDetector.OnGestureListener is called when the user swipes the screen.

Accepted Answer

The answer of The ____________ method of the GestureDetector.OnGestureListener is...

Question 4

The ____________ class encapsulates a bitmap.

Accepted Answer

The answer of The ____________ class encapsulates a bitmap....

Question 5

The ____________ class enables us to draw shapes and bitmaps.

Accepted Answer

The answer of The ____________ class enables us to draw...

Question 6

The ____________ class enables us to define the style and color for drawing.

Accepted Answer

The answer of The ____________ class enables us to define...

Question 7

We can use the ____________ method of the Canvas class to draw a rectangle.

Accepted Answer

The answer of We can use the ____________ method of...

Question 8

We can use the ____________ method of the Canvas class to draw a circle.

Accepted Answer

The answer of We can use the ____________ method of...

Question 9

We can use the ____________ method of the Canvas class to draw a bitmap.

Accepted Answer

The answer of We can use the ____________ method of...

Question 10

We can use the ____________ method of the Canvas class to draw a string.

Accepted Answer

The answer of We can use the ____________ method of...

Question 11

The ____________ class, part of the android.media package, enables us to manage and play sounds.

Accepted Answer

The answer of The ____________ class, part of the android.media...

Question 12

Inside the XML snippet below activity_main.xml, add two lines of XML so that the width of the TextView is as big as the width of the TextView's parent, and the height of the TextView is just what is necessary to hold the TextView's contents.
<   TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>

Accepted Answer

The answer of Inside the XML snippet below activity_main.xml, add...

Question 13

A TextView is defined in activity_main.xml and given the id tv. Inside MainActivity.java, write the code to retrieve that TextView and change its text to CHANGED.

Accepted Answer

The answer of A TextView is defined in activity_main.xml and...

Question 14

Inside activity_main.xml, we defined a Button element in such a way that when the user clicks on the button, the go method (from the MainActivity class, whose content view is defined in activity_main.xml) executes. When the user clicks on the button, we want to change the text of that button to CHANGED. Write the go method.

Accepted Answer

The answer of Inside activity_main.xml, we defined a Button element...

Question 15

Inside an Activity class, and assuming that a GridLayout named gl has been instantiated, write the code to create a Button and add it to gl, setting its width to the width of the screen and its height to 100.

Accepted Answer

The answer of Inside an Activity class, and assuming that...

Question 16

Code a private class that implements the View.OnClickListener interface; override its only method so that it changes the text of the View parameter of that method to CHANGED (assume that View is a Button).

Accepted Answer

The answer of Code a private class that implements the...

Question 17

Inside a RelativeLayout element, insert code that adds an EditText element as follows: Its bottom edge is aligned with the bottom edge of an element whose id is a. Its left edge is aligned with the left edge of an element whose id is b. < EditText android:layout_width="wrap_content" android:layout_height="wrap_content" < !-- Your code goes here --> android:inputType="numberDecimal" />

Accepted Answer

The answer of Inside a RelativeLayout element, insert code that...

Question 18

Inside an activity, when this activity goes in the background, we want to output HI to Logcat using the tag MA. Write the code for it.

Accepted Answer

The answer of Inside an activity, when this activity goes...

Question 19

db is a SQLiteDatabase reference; sql is a String representing a delete SQL statement. Write a statement to execute that SQL statement.

Accepted Answer

The answer of db is a SQLiteDatabase reference; sql is...

Question 20

db is a SQLiteDatabase reference; sql is a String representing a select SQL statement. Write a statement to execute that SQL statement and assign the result to an object reference of the appropriate data type.

Accepted Answer

The answer of db is a SQLiteDatabase reference; sql is...

Quiz 17: Android Development: Extending Views, Fragments, and Google Maps Permissions

The getAction method of the MotionEvent class returns an integer. We can compare that integer to the ____________ constant of the MotionEvent class if we want to test whether the user moved his or her finger on the screen.

The View child is inside the View parent but is under another View, so we can see only part of it. We can use the ____________ method to bring the child to the front so that we can see it completely.

The ____________ method of the GestureDetector.OnGestureListener is called when the user swipes the screen.

The ____________ class encapsulates a bitmap.

The ____________ class enables us to draw shapes and bitmaps.

The ____________ class enables us to define the style and color for drawing.

We can use the ____________ method of the Canvas class to draw a rectangle.

We can use the ____________ method of the Canvas class to draw a circle.

We can use the ____________ method of the Canvas class to draw a bitmap.

We can use the ____________ method of the Canvas class to draw a string.

The ____________ class, part of the android.media package, enables us to manage and play sounds.

A TextView is defined in activity_main.xml and given the id tv. Inside MainActivity.java, write the code to retrieve that TextView and change its text to CHANGED.

Inside an Activity class, and assuming that a GridLayout named gl has been instantiated, write the code to create a Button and add it to gl, setting its width to the width of the screen and its height to 100.

Code a private class that implements the View.OnClickListener interface; override its only method so that it changes the text of the View parameter of that method to CHANGED (assume that View is a Button).

Inside an activity, when this activity goes in the background, we want to output HI to Logcat using the tag MA. Write the code for it.

db is a SQLiteDatabase reference; sql is a String representing a delete SQL statement. Write a statement to execute that SQL statement.

db is a SQLiteDatabase reference; sql is a String representing a select SQL statement. Write a statement to execute that SQL statement and assign the result to an object reference of the appropriate data type.