TCS Android Mobile Application Developer Interview Questions and Answers

Higher Order and Lambda Functions in Kotlin

• Higher order functions are functions that take other functions as parameters or return functions

• Lambda functions are anonymous functions that can be used as arguments or return values in higher order functions

• They provide a concise way to write code and enable functional programming in Kotlin

Multi Modular Project structure is an architectural approach that divides an application into multiple modules for better organization and scalability.

• Divide the application into separate modules based on functionality or features.

• Each module should have its own set of code, resources, and dependencies.

• Modules can communicate with each other through defined interfaces or APIs.

• Modularization helps in code reusability, e...read more

Null pointer prevention and type safety in Kotlin

• Kotlin uses nullable and non-nullable types to prevent null pointer exceptions

• The safe call operator '?' can be used to safely access nullable variables

• The '!!' operator can be used to explicitly throw a null pointer exception

• Kotlin's type system ensures type safety by checking types at compile-time

I am a passionate Android developer with 5 years of experience in building innovative mobile applications.

• 5 years of experience in Android app development

• Strong knowledge of Java and Kotlin programming languages

• Experience with RESTful APIs and third-party libraries

• Designed and implemented user-friendly interfaces

• Published multiple apps on Google Play Store

Pricing procedure refers to the process of determining the price of a product or service based on various factors.

• Pricing procedure involves analyzing costs, competition, target market, and value proposition.

• It helps in setting a price that maximizes profits while remaining competitive in the market.

• Different pricing strategies such as cost-plus pricing, value-based pricing, and competitive pricing can be part of a pri...read more