The Coordinator Pattern: Untangling iOS Navigation
The Coordinator pattern makes a separate object the 'boss' of app navigation, leaving view controllers to just manage their view. This lets you reuse views in different flows without them knowing what comes next.
The Coordinator pattern moves app navigation logic out of 'Massive View Controllers' and into dedicated 'coordinator' objects. A coordinator's job is to create and present view controllers for a specific flow, making the view controller itself reusable in different contexts (e.g., pushed vs. presented modally). The biggest mistake is letting view controllers handle any navigation; they must become 'islands' that delegate all flow decisions to their coordinator.
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