Proper error handling in network calls helps maintain smooth app performance by avoiding crashes and unresponsive UI. Handling errors gracefully prevents wasted CPU cycles on repeated failed requests and reduces battery drain caused by unnecessary retries. It also ensures the app remains responsive, targeting 60fps frame rate for smooth animations and interactions.
Use asynchronous APIs like URLSession with completion handlers or async/await to avoid blocking the main thread. Implement retry logic with exponential backoff to reduce network load. Cache responses when appropriate to minimize network calls. Handle errors specifically (e.g., timeout, no internet) to provide quick user feedback and avoid unnecessary UI updates that can drop frames.
Error handling code for network calls adds minimal size to the app bundle, typically just a few kilobytes. Using native Swift APIs keeps dependencies small. Proper error handling can improve perceived startup time by preventing the app from hanging on failed network calls during launch.
On iOS, use URLSession with Swift's async/await or completion handlers for network calls and error handling. iOS requires apps to handle network errors gracefully to pass App Store review. Android uses OkHttp or Retrofit with Kotlin coroutines or callbacks. Both platforms recommend handling errors like no connectivity or server errors to improve user experience and app stability.
Your app takes 5 seconds to load this screen. What's likely wrong?
Answer: The app might be performing synchronous network calls on the main thread or not handling network errors properly, causing delays or hangs. Optimizing with asynchronous calls and proper error handling will improve load time and responsiveness.