30+ Android Interview Questions And Answers

The activity lifecycle includes callbacks like onCreate(), onStart(), onResume(), onPause(), onStop(), and onDestroy() that allow you to know the current state of the activity and manage resources accordingly.

Android supports Normal, Ordered, Sticky, and Local broadcasts.

Fragments have additional lifecycle methods such as onAttach(), onCreateView(), and onDetach() that handle their unique relationship with their host activity.

A Content Provider manages access to a structured set of data, allowing data sharing between different applications.

Intent Filters declare the capabilities of a component, allowing it to respond to intents from other apps.

To create a custom View, extend a View class and override the onDraw() method to render your component.

A Loader, like AsyncTaskLoader, is used to load data asynchronously and manage data across Activity or Fragment lifecycle changes.

A View is a UI element, such as a button or text field, while a ViewGroup is a container that holds Views and defines their layout.

This code sets an OnClickListener to a TextView using View Binding to handle click events.

Memory leaks can be handled by avoiding long-lived references to Activity, ViewModel, using Context appropriately, and leveraging WeakReferences if necessary.

JobScheduler is used to schedule tasks or work when certain conditions are met, such as device charging or connectivity.

The Emulator may not accurately imitate every device feature, such as cellular network, battery, or GPS, and it may also run slower than a real device.

ROOM is an abstraction layer over SQLite, providing a more robust database access mechanism while harnessing the full power of SQLite.

Dependency injection frameworks, like Dagger or Hilt, help manage class dependencies, thus making code more testable and maintainable.

Architecture Components are a set of libraries that help you design robust, testable, and maintainable apps, such as ViewModel, LiveData, and Data Binding.