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What does pushViewController do in iOS programmatic navigation?

easy📝 Conceptual Q11 of 15
iOS Swift - Navigation
What does pushViewController do in iOS programmatic navigation?
AIt moves to a new screen by adding it on top of the navigation stack.
BIt removes the current screen from the navigation stack.
CIt resets the entire navigation stack to the root screen.
DIt presents a screen modally without navigation.
Step-by-Step Solution
Solution:

  1. Step 1: Understand navigation stack behavior

    In iOS, navigation uses a stack where screens are pushed and popped.

  2. Step 2: Role of pushViewController

    The method pushViewController adds a new screen on top, moving forward.

  3. Final Answer:

    It moves to a new screen by adding it on top of the navigation stack. -> Option A

  4. Quick Check:

    pushViewController = move forward [OK]
Quick Trick: Push adds a screen on top; pop removes the top screen [OK]
Common Mistakes:
  • Confusing push with pop behavior
  • Thinking push resets the stack
  • Mixing modal presentation with push navigation

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