Air India Android Developer Interview Questions and Answers

ViewModel is a class that is responsible for preparing and managing data for an activity or fragment.

• ViewModel helps in separating the UI data from the UI controller logic.

• It survives configuration changes such as screen rotations.

• ViewModel is part of the Android Architecture Components.

• Example: ViewModel can hold data retrieved from a database and provide it to the UI.

LaunchEffect is a function in Jetpack Compose that allows you to trigger side effects when a composable is first launched.

• LaunchEffect is used to perform actions such as fetching data from a network or initializing a resource when a composable is first displayed.

• It is similar to the useEffect hook in React.

• Example: launchEffect { fetchData() }