Android app components, activity lifecycle, Compose composables, state hoisting, ViewModel, Room and navigation.
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- What is an Android Activity?
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The main UI component for user interaction; one screen in an app- What is the first lifecycle callback in an Activity?
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onCreate()- What lifecycle callback is invoked when the Activity becomes visible?
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onStart()- What lifecycle callback is invoked when the Activity starts receiving user input?
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onResume()- What lifecycle callback is invoked when the Activity loses focus?
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onPause()- What lifecycle callback is invoked when the Activity is no longer visible?
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onStop()- What is onDestroy in the Activity lifecycle?
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The final callback before the Activity is destroyed and memory is reclaimed- What is an Intent in Android?
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A messaging object used to request an action from another app component- What is a Service in Android?
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An app component that performs long-running operations without a UI- What is a BroadcastReceiver?
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A component that receives and responds to broadcast messages from the system or other apps- What is a ContentProvider in Android?
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A component that manages access to a shared set of app data- What is a Fragment?
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A reusable piece of UI that can be hosted by an Activity or another Fragment- What is Jetpack Compose?
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A modern, declarative UI toolkit for building native Android UIs- What is a Composable function?
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A function marked with @Composable that describes a piece of UI- What does the @Composable annotation do?
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It marks a function as a Composable that can emit UI
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