Capgemini Android Developer Interview Questions, Process, and Tips

Launch modes determine how a new instance of an activity is associated with the current task.

• Standard: Creates a new instance of the activity in the task's stack.

• SingleTop: If an instance of the activity already exists at the top of the stack, it will be reused.

• SingleTask: Activity is always the root of a new task and the task is cleared before the activity starts.

• SingleInstance: Activity is launched into a new task an

Coroutines are light-weight threads that help manage asynchronous tasks efficiently in Android development.

• Coroutines are part of Kotlin programming language and are used for asynchronous programming.

• They allow developers to write asynchronous code in a sequential manner, making it easier to read and maintain.

• Coroutines can be used to perform tasks like network calls, database operations, and long-running computations.

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ViewModel in MVVM is a class that stores and manages UI-related data in a lifecycle-aware manner.

• ViewModel helps to separate the UI logic from the UI controller (Activity or Fragment).

• It survives configuration changes and retains data during the lifecycle of the UI component.

• ViewModel is not destroyed when the UI component is destroyed, preventing memory leaks.

• It can also hold references to other components like reposi

Null safety in Android development ensures that variables cannot hold null values, preventing NullPointerExceptions.

• Null safety is a feature in Kotlin that helps developers avoid NullPointerExceptions by explicitly declaring whether a variable can hold null or not.

• By using nullable and non-nullable types, developers can ensure that variables are only assigned non-null values.

• For example, a non-nullable type would be de...read more