Android
About
When you create an app with Android Studio, it will create an initial activity class that will start when the app is launched. The default name of this activity is MainActivity.
Activities can contain one or more Fragments (reusable sub-activities).
- Activities: UI components organisation (Page)
- Content Providers - Manage app data.
- Services - Run background tasks with no UI, such as downloading information or playing music.
- Broadcast Receivers - Listen for and respond to system announcements, such as the screen being turned on or losing network connectivity.
- Intent: Navigation between Intern Activity or Extern Application