Explain UIKit MVC and the Massive View Controller problem
WHAT IT TESTS: understanding UIKit's core pattern and its pitfall. OUTLINE: Model holds data, View displays it, Controller mediates between them; the view controller accretes networking, parsing, and logic into a Massive View Controller.
WHAT IT TESTS: whether you understand UIKit MVC and why view controllers bloat. ANSWER OUTLINE: the Model owns data and business rules, the View renders and forwards user actions, and the Controller mediates, updating the view from the model and vice versa; in UIKit the view controller couples tightly to views, so developers dump networking, parsing, delegate conformances, and logic into it, creating the Massive View Controller; mitigations include extracting view models, services, and child controllers.
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- #ios
- #mvc
- #uikit
- #architecture
- #view-controller
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