When should you use Activities in Android development?

In Android development, Activities serve as the entry points for user interactions. They define a single screen with a user interface and manage the user’s interactions with the application. Here are some use cases for when you should consider using Activities:

• User Interfaces: When you need to create a separate screen for a distinct function, such as login, settings, or displaying data.
• When you need to navigate between multiple screens and ensure a smooth user experience using intents.
• When you need to manage the UI lifecycle, such as handling configuration changes and managing app states.
• When you want to capture user interactions in a specific context, such as taking user input or showing a list.

For example, if you are creating a messaging app, you would use different Activities to represent chat lists, individual chats, and settings screens.