Comprehensive Android Developer Bootcamp - Final Challenge Solution

The video tutorial guides viewers through adding a 'previous' button to an Android quiz app. It covers rearranging UI elements using linear layouts, coding the button's functionality to navigate questions, and addressing index errors. The tutorial concludes with a functional quiz app that allows users to navigate questions both forward and backward.

What is the purpose of creating a new linear layout when adding the 'previous' button?

• To add a new button style

• To change the color of the button

• To increase the size of the button

• To position the button correctly

How do you assign an image to the 'previous' button?

• By using a URL

• By accessing drawable resources

• By setting a color code

• By using a text label

What is the first step in implementing the 'previous' button functionality?

• Adding a new color scheme

• Creating a new XML file

• Designing a new layout

• Setting up the button in the main activity

What is the main issue addressed when handling index errors?

• The text not updating

• The button not being clickable

• The index going out of range

• The button color not changing

Why is it important to check if the current index is greater than zero?

• To prevent navigating to a non-existent question

• To ensure the button is visible

• To change the button's text

• To update the button's color

What happens if you subtract 1 from an index of zero?

• The index resets to zero

• The index becomes negative

• The index remains unchanged

• The index becomes positive

What is the result of successfully implementing the 'previous' button functionality?

• The app allows navigation through questions

• The app crashes

• The app becomes slower

• The app changes its theme