Grape Services Android App Developer Interview Questions and Answers

Coroutines are a way to perform asynchronous operations in Android, securing app data involves encryption, SSL pinning enhances security, FCM for notifications.

• Coroutines are used for managing asynchronous operations in Android, allowing for efficient and non-blocking code execution.

• Securing app data involves using encryption techniques such as AES to protect sensitive information from unauthorized access.

• SSL pinning i...read more

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

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

MVVM is a design pattern that separates the UI, business logic, and data layers, promoting better code organization and testability.

• MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model.

• MVVM promotes data binding, making it easier to keep the UI in sync with the underlying data.

• Other architectures like MVC (Model-View-Controller) and MVP (Model-View-Presenter) ...read more

Data Structures and Algorithms with time and space complexity analysis

• Discuss various data structures like arrays, linked lists, trees, graphs, etc.

• Explain common algorithms like sorting, searching, dynamic programming, etc.

• Analyze time complexity using Big O notation and space complexity using memory usage

• Provide examples of code snippets with their corresponding time and space complexities