# Android MVVM Architecture (Android)

> Jetpack을 활용한 MVVM 아키텍처: ViewModel, LiveData, Data Binding, Separation of Concerns, Unidirectional Data Flow

- 18 면접 질문
- Mid-Level
- [면접 질문: Android](https://sharpskill.dev/ko/technologies/android/interview-questions.md)

## 1. Android에서 ViewModel이란 무엇인가요?

**답변**

ViewModel은 UI 관련 데이터를 lifecycle-aware 방식으로 저장하고 관리하는 Jetpack 컴포넌트입니다. 구성 변경(화면 회전)에도 살아남으며 비즈니스 로직을 UI에서 분리할 수 있게 해줍니다.

## 2. Activity에서 ViewModel 인스턴스를 어떻게 생성하나요?

**답변**

ViewModelProvider를 사용하여 ViewModel 인스턴스를 생성하거나 가져옵니다. ViewModelProvider(this).get(MyViewModel.class)는 화면 회전 후에도 동일한 인스턴스를 얻을 수 있도록 보장합니다.

## 3. Activity나 View의 Context를 ViewModel에 전달하면 안 되는 이유는 무엇인가요?

**답변**

ViewModel은 구성 변경에도 살아남으며 Activity보다 오래 존재합니다. Activity Context 참조를 유지하면 메모리 누수가 발생합니다. 필요한 경우 Application Context와 함께 AndroidViewModel을 사용하세요.

## 15개 추가 질문 이용 가능

- LiveData란 무엇인가요?
- LiveData와 MutableLiveData의 차이점은 무엇인가요?

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## 기타 Android 면접 주제

- [Android 기초](https://sharpskill.dev/ko/technologies/android/interview-questions/android-fundamentals.md): 24개 질문, Junior
- [Android UI 및 리소스](https://sharpskill.dev/ko/technologies/android/interview-questions/android-ui-and-resources.md): 30개 질문, Junior
- [Android 생명주기](https://sharpskill.dev/ko/technologies/android/interview-questions/android-lifecycle.md): 30개 질문, Junior
- [Android 내비게이션](https://sharpskill.dev/ko/technologies/android/interview-questions/android-navigation.md): 26개 질문, Junior
- [Android 데이터 관리](https://sharpskill.dev/ko/technologies/android/interview-questions/android-data-management.md): 29개 질문, Junior
- [Android 네트워킹](https://sharpskill.dev/ko/technologies/android/interview-questions/android-networking.md): 29개 질문, Junior
- [Android 테스트](https://sharpskill.dev/ko/technologies/android/interview-questions/android-testing.md): 28개 질문, Junior
- [Android Gradle](https://sharpskill.dev/ko/technologies/android/interview-questions/android-gradle.md): 26개 질문, Junior
- [Android를 위한 Kotlin 언어 기초](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-language-essentials.md): 24개 질문, Junior
- [Room Database](https://sharpskill.dev/ko/technologies/android/interview-questions/android-room-database.md): 25개 질문, Mid-Level
- [백그라운드 작업](https://sharpskill.dev/ko/technologies/android/interview-questions/android-background-work.md): 18개 질문, Mid-Level
- [Jetpack Compose](https://sharpskill.dev/ko/technologies/android/interview-questions/android-compose.md): 28개 질문, Mid-Level
- [권한 및 기기 기능](https://sharpskill.dev/ko/technologies/android/interview-questions/android-permissions-and-device.md): 21개 질문, Mid-Level
- [Android용 Firebase](https://sharpskill.dev/ko/technologies/android/interview-questions/android-firebase.md): 23개 질문, Mid-Level
- [Android 네트워킹 고급](https://sharpskill.dev/ko/technologies/android/interview-questions/android-networking-advanced.md): 13개 질문, Mid-Level
- [Kotlin 컬렉션과 연산자](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-collections-operators.md): 20개 질문, Mid-Level
- [Kotlin Coroutines와 Flow](https://sharpskill.dev/ko/technologies/android/interview-questions/android-kotlin-coroutines-flow.md): 20개 질문, Mid-Level
- [Android 의존성 주입](https://sharpskill.dev/ko/technologies/android/interview-questions/android-dependency-injection.md): 15개 질문, Mid-Level
- [Android MVI Architecture](https://sharpskill.dev/ko/technologies/android/interview-questions/android-mvi-architecture.md): 17개 질문, Mid-Level
- [Android Clean Architecture](https://sharpskill.dev/ko/technologies/android/interview-questions/android-clean-architecture.md): 21개 질문, Senior
- [Android Compose 고급](https://sharpskill.dev/ko/technologies/android/interview-questions/android-compose-advanced.md): 17개 질문, Senior
- [Android Performance and Monitoring](https://sharpskill.dev/ko/technologies/android/interview-questions/android-performance-monitoring.md): 13개 질문, Senior
- [Android Security and Privacy](https://sharpskill.dev/ko/technologies/android/interview-questions/android-security-privacy.md): 18개 질문, Senior
- [Android CI/CD and Release](https://sharpskill.dev/ko/technologies/android/interview-questions/android-cicd-release.md): 15개 질문, Senior
- [Android UX and Form Factors](https://sharpskill.dev/ko/technologies/android/interview-questions/android-ux-form-factors.md): 18개 질문, Senior
- [Android Testing Advanced](https://sharpskill.dev/ko/technologies/android/interview-questions/android-testing-advanced.md): 18개 질문, Senior

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