DXC Technology Senior Android Developer Interview Questions and Answers

Normal MCQ questions reasoning, java related and programs outputs

Difference between abstract classes and interfaces, Array sort time complexity

Q1. Questions related to koltin
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Q2. Jetpack compose uses
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Jetpack Compose is a modern Android UI toolkit that simplifies and accelerates UI development.
• Declarative UI: Jetpack Compose allows developers to build UI using a declarative programming model.

• State management: Jetpack Compose handles state management efficiently, making it easier to update UI based on data changes.

• Compose functions: Developers can create reusable UI components using Compose functions.

• Interoperability...read more
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Q3. Difference between remember and rememberSaveable
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remember is used to store a value in a composable function, while rememberSaveable is used to store a value that survives configuration changes.
• remember is used to store a value that does not survive configuration changes

• rememberSaveable is used to store a value that survives configuration changes, such as rotation of the device

• rememberSaveable is typically used for storing view model data in Jetpack Compose
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Q4. Coroutines parallel and sequential processing
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Q1. How do you handle the multiple view in Recyclerview?
Ans. 
Multiple views in RecyclerView can be handled by using different view types and view holders.
• Use getItemViewType() method to return different view types based on position

• Create multiple view holders for each view type

• Bind data to each view holder based on its type

• Example: Creating a chat app with different message types like text, image, and video
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Q1. What is UI thread?
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UI thread is the main thread in Android responsible for handling user interface interactions.
• UI thread is also known as the main thread in Android.

• It is responsible for handling user interface interactions such as drawing views, handling touch events, and updating UI components.

• Performing long-running tasks on the UI thread can lead to UI freezes and unresponsiveness.

• To perform background tasks and prevent blocking the...read more
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Q1. What is marker interface
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Marker interface is an interface with no methods, used to mark a class for special treatment.
• Marker interfaces are used to provide metadata about the class.

• They do not have any methods to implement.

• Examples include Serializable interface in Java.
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Q1. What is fragment
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A fragment is a modular section of an activity that has its own lifecycle, layout, and behavior.
• Fragments are reusable components that can be combined to create a multi-pane UI.

• They can be added or removed from an activity dynamically.

• Fragments have their own lifecycle methods such as onCreate, onCreateView, and onDestroyView.
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Q1. 1. Kotlin 2. co- routine 3. one coding program 4. mvvm 5. basic Android question
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Q1. Java basic interview question coroutine ,kotlin question what is abstract class ? what is singleton class? mvvm design pattern
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Q1. MVVM, kotlin, MVP
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Q1. Lifecycle of an activity
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The lifecycle of an activity in Android refers to the different states an activity goes through during its lifetime.
• onCreate() method is called when the activity is first created

• onStart() method is called when the activity becomes visible to the user

• onResume() method is called when the activity starts interacting with the user

• onPause() method is called when the activity is partially obscured

• onStop() method is called wh...read more
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Q2. Lifecycle of a fragment
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Fragment lifecycle includes onAttach, onCreate, onCreateView, onStart, onResume, onPause, onStop, onDestroyView, onDestroy, onDetach.
• onAttach() - fragment is associated with an activity

• onCreate() - initialize essential components

• onCreateView() - create the fragment's view hierarchy

• onStart() - fragment becomes visible

• onResume() - fragment is interacting with the user

• onPause() - fragment is partially visible

• onStop() - fr...read more
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Q1. Basic Android and Kotlin questions
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Q1. Kotlin Questions
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