Instructions
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8.0 hours
Project Status Ready for Submission
Project 2
Enhancing a Quiz App in iOS
Are you ready to have your project reviewed by a fellow Techdegree student? Before you submit your
project, make sure you have double-checked your work, we want you to pass the first time!
If you get your project back and it needs work, you’ll have to wait 1 day before you can resubmit your
project.
Submit for Review
Instructions
How you'll be graded
You are being given a simple true/false quiz app. The app functions correctly, though much of the code could
benefit from major refactoring. For instance, the app currently is based on collection types, which should be
converted into custom classes or structs. Similarly, the app does not adhere to the Model-View-Controller
design pattern as well as it could.
Additionally, you will need to add several of the features described below, some being mandatory, others
optional. For a few of the features, you are being asked to step beyond what you have learned in this course
and make use of documentation and outside resources. That said, provided you find the correct resources, you
should be able to work through the implementation. Remember, just as important as practicing the specifics
of the syntax you’ve learned is getting comfortable with the idea of venturing into the unknown to find and
use the right tools for the job.
It is worth noting that while we have provided a final question set and UI screenshots, we encourage you to
choose a subject area that interests you (movies, sports, history, technology, etc…) and create your own
question set and background imagery/UI to match. This is not a requirement for the project, but will almost
certainly make it a more enjoyable experience and better portfolio piece.
Before you start
To prepare for this project you'll need to make sure you complete and understand these steps.
6 steps
Have an active Github account, with a repository for this project
Be sure you’ve watched the Enhance a Quiz App Instruction Video, linked in Project Resources.
Read all instructions carefully, we suggest twice, at least.
Read the grading rubric carefully (Next to the “Instructions” tab).
Download the starter app, final mockups and final question set by clicking the download files link
on this page.
You’ll certainly need your Mac to complete the project, but you may want to begin by sketching
out your ideas/code with a pencil and paper.
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Project Instructions
To complete this project, follow the instructions below. If you get stuck, ask a question in the community.
8 steps
The starter files contain a Storyboard scene that is simulated to a 4.7 inch iPhone without any
constraints to position elements. If you run the app in the simulator for a 5.5 inch iPhone, the
layout looks fine but it breaks on any other device size. Convert the Storyboard back to a
universal scene and add constraints to maintain the layout such all UI elements are sized and
spaced appropriately for all iPhones of screen sizes 4.7 and 5.5. inches.
Refactor the existing code such that individual questions are modeled using a class or struct
Ensure that code adheres to the MVC pattern. Please place your new custom data structure for
questions in a new Swift file.
Enhance the quiz so it can accommodate four answer choices for each question, as shown in the
mockups and sample question set.
Add functionality such that during each game, questions are chosen at random, though no
question will be repeated within a single game.
Before you submit your project for review, make sure you can check off all of the items on the
Student Project Submission Checklist. The checklist is designed to help you make sure you’ve
met the grading requirements and that your project is complete and ready to be submitted!
Don’t forget to revisit the courses you’ve completed as needed and never hesitate to reach out to
the Treehouse Community.
If you're having trouble with this project, make sure you take a look at this great study guide:
Project 2 Study Guide
Extra Credit
To get an "exceeds" rating, you can expand on the project in the following ways:
5 steps
NOTE: In order to get an overall Exceed grade for the project, you must get an Exceed in ALL of the
items where an Exceed can be achieved.
Many of the below features can be adapted from code which already exists in the starter project.
Implement a feature so that the app can neatly display a mix of 3-option questions as well as 4-
option questions. Inactive buttons should be spaced or resized appropriately, not simply hidden,
disabled, or marked as unused (e.g. with the string ‘N/A’). You need to implement this feature
using only one view controller.
Implement a way to appropriately display the correct answer, when a player answers incorrectly.
Modify the app to be in "lightning" mode where users only have 15 seconds to select an answer
for each question set. Display the number of correct answers at the end of the quiz.
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Add two sound effects, one for correct answers and one for incorrect. You may also add sounds at
the end of the game, or wherever else you see fit. (Hint: you can base your solution on code
already found in the starter app.)
NOTE:
To get an "Exceeds Expectations" grade for this project, you'll need to complete each of the
items in this section. See the rubric in the "How You'll Be Graded" tab above for details on how
you'll be graded.
If you’re shooting for the "Exceeds Expectations" grade, it is recommended that you mention so
in your submission notes.
Passing grades are final. If you try for the "Exceeds Expectations" grade, but miss an item and
receive a “Meets Expectations” grade, you won’t get a second chance. Exceptions can be made
for items that have been misgraded in review.
Download files
Zip file
Project Resources
Instruction
Enhance a Quiz App Instruction Video
File Download
Final Mockups
File Download
Sample Quiz Questions
Link
System Sound Services Reference
Link
Auto-Layout Documentation
Need Help?
Have questions about this project? Start a discussion with the community and Treehouse staff.
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