CloudCollab Technologies Android Developer Interview Questions, Process, and Tips

Design patterns are reusable solutions to common software development problems.

• Design patterns provide a common vocabulary for developers to communicate about solutions to common problems.

• They help to improve code readability, maintainability, and scalability.

• Examples of design patterns include Singleton, Factory, Observer, and Decorator.

MVVM stands for Model-View-ViewModel. It is a design pattern used in software engineering.

• MVVM separates the UI logic from the business logic of an application.

• It provides better testability and maintainability than MVC.

• ViewModel acts as a mediator between the View and Model.

• Data binding is a key feature of MVVM.

• MVVM is widely used in Android app development.

To make http requests, use libraries like OkHttp or Retrofit.

• Create an instance of OkHttpClient or Retrofit

• Create a Request object with the desired URL and method

• Execute the request using the client's newCall() method

• Handle the response in a callback or using RxJava

• Don't forget to handle errors and exceptions

Extension functions are functions that can be added to an existing class without modifying the class's source code.

• Extension functions allow developers to add functionality to existing classes without having to inherit from them.

• They can be used to extend classes from external libraries or to add convenience methods to existing classes.

• Extension functions are defined outside of the class they extend and can be called a...read more