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udacity/andfun-kotlin-mars-real-estate: NASA photos with a whimsical theme demon ...

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开源软件名称(OpenSource Name):

udacity/andfun-kotlin-mars-real-estate

开源软件地址(OpenSource Url):

https://github.com/udacity/andfun-kotlin-mars-real-estate

开源编程语言(OpenSource Language):

Kotlin 100.0%

开源软件介绍(OpenSource Introduction):

Connect to the Internet - Mars Real Estate

This is the toy app for Lesson 8 of the Android App Development in Kotlin course on Udacity.

MarsRealEstate

MarsRealEstate is a simple demo app using ViewModel & LiveData with Retrofit, Glide and Moshi in Kotlin.

This app demonstrates the following views and techniques:

  • Retrofit to make api calls to an HTTP web service
  • Moshi which handles the deserialization of the returned JSON to Kotlin data objects
  • Glide to load and cache images by URL.

It leverages the following components from the Jetpack library:

Screenshots

Screenshot 1 Screenshot 2 Screenshot 3

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, as 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. Check out 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: Check out 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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