Chapter 5 Android Bootcamp 3rd edition Developer FAQs 1. Typically in a MainActi

Question

Chapter 5 Android Bootcamp 3rd edition

Developer FAQs

1. Typically in a MainActivity.java file, the class extends ActionBarActivity. When the

primary purpose of the class is to display a list, what is the opening MainActivity class

statement?

2. Which Android control displays a vertical listing of items?

3. When does a scroll bar appear in a list?

4. Initialize an array named temps with the integers 22, 56, 38, 30, and 57.

5. Answer the following questions about the following initialized array:

String[]pizzaToppings = new String[10];

a. What is the statement to assign mushrooms to the first array location?

b. What is the statement to assign green peppers to the fourth location in the array?

c. How many toppings can this array hold?

d. Rewrite this statement to initially be assigned the following four toppings only:

extra cheese, black olives, mushrooms, and bacon.

6. Write a line of code that assigns the values Samsung, HTC, Sony, Motorola, and Asus

to the elements in the array phoneBrands.

7. Fix this array statement:

doubles { } driveSize = ["32.0", "64.0", "128.0"]

8. Write two lines of code that assign an array named coding with the items Java, C#,

Python, Visual Basic, and Ruby and display this array as a generic list.

9. Which type of pictures can be used for free fair use without copyright?

10. What does URI stand for?

Explanation / Answer

2)Answer:

List view

Explanation:

ListView displays a vertical listing of items.

3)Answer:

A scroll bar appears in a list when the list exceeds the size of the window.

4)Answer:

int[] temps = {22, 56, 38, 30, 57};

5)Answer:

a)Answer:

pizzaToppings[0] = "mushrooms";

b)Answer:

pizzaToppings[3] = "green peppers";

d)Answer:

String[] pizzaToppings = {"extra cheese", "black olives", "mushrooms", "bacon"}

9)Answer:

public domain

explanation:

Public domain pictures can be used for free fair use without copyright.

10)Answer:

Uniform Resource Identifier

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