Can you show an example of applying the 'Single Responsibility' principle from SOLID in a real situation?

The Single Responsibility Principle states that a class should have only one reason to change, meaning it should be responsible for a single specific task.

Example in Kotlin for Android:

// Bad: the class handles both data logic and display
class UserManager {
    fun loadUser() { /* load user */ }
    fun displayUser() { /* display user */ }
}

// Good: responsibilities are separated
class UserRepository {
    fun loadUser() { /* load user from DB or network */ }
}

class UserView {
    fun displayUser(user: User) { /* display user on screen */ }
}

This approach simplifies code maintenance and testing, as each part is responsible for its specific task.