Android Activity


  • What is an Activity? 
  • Declaration of Activities in manifest file
  • Activities and application 
  • Activity life-cycle 
  • Activity stack

What is an Activity? 

  • An activity presents a visual user interface (screen) for one focused endeavor the user can undertake 
  • Examples - Individual activity 
    • A list of menu items users can choose from 
    • Display of photographs along with their captions 
  • Example - Sequence of activities 
    • A text messaging application might have one activity that shows a list of contacts to send messages to, a second activity to write the message to the chosen contact, and other activities to review old messages or change settings.

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