Advanced Android 01.1:Fragments✍

Advanced Android 01.1:Fragments

이 포스팅은 아래 구글 코드랩을 개인 학습용으로 정리한 글입니다.

• 1.1: 프래그먼트

1. Welcome

• Fragment:
  • self-contained component with its own user interface (UI) and lifecycle
  • can be reused in different parts of an app's UI
• A Fragment can also be used without a UI
  -> in order to retain values across configuration changes

2. App overview

• In the first task, you add the Fragment statically to the Activity layout
  -> it is displayed for the entire duration of the Activity lifecycle

• The user can interact with the radio buttons in the Fragment
  -> choose either "Yes" or "No"
  -> If the user chooses "Yes," the text in the Fragment changes to "Article: Like."
  -> If the user chooses "No," the text in the Fragment changes to "Article: Thanks."

➖

• In the second task, you add the Fragment dynamically
  -> your code adds, replaces, and removes the Fragment while the Activity is running

• the user can tap the Open button
  -> to show the Fragment at the top of the screen.

• The user can then interact with the UI elements in the Fragment.

• The user taps Close
  -> to close the Fragment.

3. Task 1. Include a Fragment for the entire Activity lifecycle

1.1 Open the starter app project

✍...

📌참고자료

• How to copy and rename a project

• In the instructions below, substitute your actual project names
  -> ExistingProject and NewProject.

1. Copy the project

• On your computer's file system (not in Android Studio)
  -> make a copy of the ExistingProject directory.
• Rename the copied directory to NewProject.

2. Rename and refactor the project components

• Start Android Studio
  -> Open an existing Android Studio project
  -> select NewProject directory
• Select Build > Clean Project to remove the auto-generated files
  ➖
• See your files in the Project: Android view.
  -> Right-click app > java > com.example.android.existingproject
  -> select Refactor > Rename
• A Warning dialog is displayed
  -> select Rename package.
  -> Select Search in comments and strings and Search for text occurrences.
  -> Click Refactor.
• The Find: Refactoring Preview pane appears
  -> Click Do Refactor.
  ➖
• Change the app_name string value to "New Project" in the strings.xml file