Android Lifecycle and Component Management Questions

Comprehensive knowledge of Android component lifecycles and practical strategies for managing component state and interactions. This includes deep understanding of Activity and Fragment lifecycles and their callback sequences, Service and BroadcastReceiver lifecycles and typical usage patterns, and how the system creates and destroys components under configuration changes and memory pressure. Candidates should know techniques for saving and restoring user interface and instance state across configuration changes and process death, including onSaveInstanceState, persistent storage options, and saved state helpers. Familiarity with lifecycle aware architecture components such as ViewModel and lifecycle observers, LiveData or observable patterns, and how they help prevent memory leaks and simplify state management is expected. Also important are approaches for handling complex scenarios like nested fragments, fragment transactions and back stack management, background work coordination, resource cleanup, testing lifecycle behavior, and diagnosing lifecycle related bugs and memory issues.