Google IOS Developer Interview Questions and Answers

Q1. They asked me about the frameworks and overall architecture in iOS, how to implement tables, create views and auto layout.
Add your answer

Write a program to print first and last letters of words alternatively from am list

Q1. Explain oops concept and it's pillars
Ans. 
OOPs stands for Object-Oriented Programming. It is based on four main pillars: Inheritance, Encapsulation, Abstraction, and Polymorphism.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class B extends class A.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: using private access modifiers to restrict access to certain data.

• Abstract...read more
Answered by AI
Add your answer
Q2. Android architecture , thread v/s coroutine
Add your answer

Q1. Explain the concept of multithreading and how is it differ from multiprocessing
Ans. 
Multithreading allows multiple threads to exist within the context of a single process, while multiprocessing involves multiple processes running concurrently.
• Multithreading allows multiple threads to share the same memory space and resources of a single process, while multiprocessing involves separate memory space for each process.

• Multithreading is more lightweight and efficient compared to multiprocessing as threads ...read more
Answered by AI
Add your answer

Q1. Android Memory Leaks
Add your answer
Q2. Android architecture
Add your answer
Q3. Kotlin basics questions
Add your answer

Q1. Creating flow of api implementation using design patterns and unittesting
Ans. 
The flow of API implementation can be designed using design patterns and unit testing.
• Identify the design patterns suitable for the API implementation

• Create a flow diagram to visualize the steps involved

• Implement the API using the chosen design patterns

• Write unit tests to ensure the functionality and reliability of the API

• Refactor and optimize the code as needed
Answered by AI
Add your answer
Q2. Creating the design pattern for api flow
Ans. 
The design pattern for API flow involves defining the structure and sequence of API calls.
• Identify the required API endpoints and their parameters

• Determine the order and dependencies of API calls

• Handle error scenarios and implement error handling mechanisms

• Consider authentication and authorization requirements

• Implement data caching and request throttling if necessary
Answered by AI
Add your answer

Q1. All basic questions related iOS.
Add your answer

Q1. View Model Scope for activity or fragment
Ans. 
View Model Scope determines whether a ViewModel should be scoped to an activity or a fragment.
• View Model scoped to activity: shared between all fragments within the activity

• View Model scoped to fragment: specific to that fragment only

• Use activity scope for data shared across fragments, fragment scope for fragment-specific data
Answered by AI
Add your answer

Q1. What is the difference between interface and abstract class?
Ans. 
Interface defines only method signatures while abstract class can have both method signatures and implementations.
• An interface can be implemented by multiple classes while a class can only extend one abstract class.

• An abstract class can have constructors while an interface cannot.

• An abstract class can have non-abstract methods while an interface can only have abstract methods.

• An abstract class can have instance variabl...read more
Answered by AI
Add your answer
Q2. What is singleton class?
Ans. 
A singleton class is a class that can only have one instance created at a time.
• Singleton classes are often used for managing resources that should only have one instance, such as a database connection or a configuration file.

• They are implemented by making the constructor private and providing a static method to access the single instance.

• Singleton classes can also implement interfaces and inherit from other classes.

• Exa...read more
Answered by AI
Add your answer