Interview guides / android
Configuration Changes: Android Interview Question
Configuration Changes interview question with a clear example answer for Android engineers. Practice with AceMobileInterview.
This is a common Android interview topic: Configuration Changes.
Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.
1.What happens on rotation and how do you preserve UI state?
Activity may be destroyed/recreated. Use ViewModel + SavedStateHandle, rememberSaveable in Compose, or onSaveInstanceState. Avoid heavy objects in saved state bundles.
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