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What is the best method to ensure an app displays the user's last saved preferences when offline?

hard📝 Application Q8 of 15
iOS Swift - Local Data Persistence
What is the best method to ensure an app displays the user's last saved preferences when offline?
ADisable preference features when offline
BFetch preferences from the server every time the app opens
CClear preferences when the app goes offline
DSave preferences locally using UserDefaults and load them on app start
Step-by-Step Solution
Solution:

  1. Step 1: Understand offline preference access

    Preferences must be stored locally to be available offline.

  2. Step 2: Evaluate options

    Save preferences locally using UserDefaults and load them on app start saves preferences locally and loads them on start, ensuring availability offline.

  3. Final Answer:

    Save preferences locally using UserDefaults and load them on app start -> Option D

  4. Quick Check:

    Local storage ensures offline preference access [OK]
Quick Trick: Store and load preferences locally for offline use [OK]
Common Mistakes:
  • Relying on server fetch when offline
  • Clearing preferences on offline
  • Disabling features instead of storing data

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