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This is the toy app for lesson 3 of the Android App Development in Kotlin course on Udacity.

Android Trivia

The Android Trivia application is an application that asks the user trivia questions about Android development. It makes use of the Navigation component within Jetpack to move the user between different screens. Each screen is implemented as a Fragment. The app navigates using buttons, the Action Bar, and the Navigation Drawer. Since students haven't yet learned about saving data or the Android lifecycle, it tries to eliminate bugs caused by configuration changes.

Screenshots

Screenshot1 Screenshot2

How to use this repo while taking the course

Each code repository in this class has a chain of commits that looks like this:

listofcommits

These commits show every step you'll take to create the app. Each commit contains instructions for completing the that step.

Each commit also has a branch associated with it of the same name as the commit message, seen below:

branches Access all branches from this tab

listofbranches

branchesdropdown

The branches are also accessible from the drop-down in the "Code" tab

Working with the Course Code

Here are the basic steps for working with and completing exercises in the repo.

The basic steps are:

  1. Clone the repo
  2. Checkout the branch corresponding to the step you want to attempt
  3. Find and complete the TODOs
  4. Optionally commit your code changes
  5. Compare your code with the solution
  6. Repeat steps 2-5 until you've gone trough all the steps to complete the toy app

Step 1: Clone the repo

As you go through the course, you'll be instructed to clone the different exercise repositories, so you don't need to set these up now. You can clone a repository from github in a folder of your choice with the command:

git clone https://github.com/udacity/REPOSITORY_NAME.git

Step 2: Checkout the step branch

As you go through different steps in the code, you'll be told which step you're on, as well as a link to the corresponding branch.

You'll want to check out the branch associated with that step. The command to check out a branch would be:

git checkout BRANCH_NAME

Step 3: Find and complete the TODOs

Once you've checked out the branch, you'll have the code in the exact state you need. You'll even have TODOs, which are special comments that tell you all the steps you need to complete the exercise. You can easily navigate to all the TODOs using Android Studio's TODO tool. To open the TODO tool, click the button at the bottom of the screen that says TODO. This will display a list of all comments with TODO in the project.

We've numbered the TODO steps so you can do them in order: todos

Step 4: Commit your code changes

After You've completed the TODOs, you can optionally commit your changes. This will allow you to see the code you wrote whenever you return to the branch. The following git code will add and save all your changes.

git add .
git commit -m "Your commit message"

Step 5: Compare with the solution

Most exercises will have a list of steps for you to check off in the classroom. Once you've checked these off, you'll see a pop up window with a link to the solution code. Note the Diff link:

solutionwindow

The Diff link will take you to a Github diff as seen below: diff

All of the code that was added in the solution is in green, and the removed code (which will usually be the TODO comments) is in red.

You can also compare your code locally with the branch of the following step.

Report Issues

Notice any issues with a repository? Please file a github issue in the repository.

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