# Arsitektur MVVM (iOS)

> MVVM pattern, ViewModel, data binding, separation of concerns, testabilitas

- 20 pertanyaan wawancara
- Mid-Level
- [Pertanyaan Wawancara: iOS](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara.md)

## 1. Apa itu ViewModel dalam arsitektur MVVM?

**Jawaban**

ViewModel mengenkapsulasi business logic dan mengelola state view secara independen dari UIKit atau SwiftUI. Ia menjembatani lapisan Model dan View sambil mempertahankan separation of concerns yang jelas. Arsitektur ini memungkinkan unit testing dan meningkatkan maintainability serta reusability kode.

## 2. Apa tanggung jawab utama Model dalam MVVM?

**Jawaban**

Model merepresentasikan data dan business logic aplikasi. Ia mendefinisikan struktur data, menegakkan business rules, dan tetap independen dari lapisan View dan ViewModel. Independensi Model dari framework UI memastikan reusability dan testability. Ia berfungsi sebagai single source of truth untuk data aplikasi.

## 3. Apa peran utama View dalam arsitektur MVVM?

**Jawaban**

View bertanggung jawab menampilkan data dan menangkap interaksi pengguna. Ia hanya boleh berisi kode presentasi dan menghindari business logic. View terhubung ke ViewModel melalui data binding agar tetap sederhana dan testable. Di SwiftUI, gunakan @ObservedObject atau @StateObject untuk mengamati ViewModel. Di UIKit, gunakan Combine untuk berlangganan perubahan.

## 17 pertanyaan lagi tersedia

- Apa itu data binding dalam konteks MVVM?
- Apa perbedaan antara @Published dan @ObservedObject di SwiftUI?

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## Topik wawancara iOS lainnya

- [Dasar-Dasar Swift](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swift-basics.md): 25 pertanyaan, Junior
- [Dasar-Dasar Bahasa Swift](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swift-language-essentials.md): 15 pertanyaan, Junior
- [Dasar-Dasar UIKit](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/uikit-fundamentals.md): 18 pertanyaan, Junior
- [Siklus Hidup UIViewController](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/uiviewcontroller-lifecycle.md): 20 pertanyaan, Junior
- [UserDefaults & Keychain](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/userdefaults-keychain.md): 20 pertanyaan, Junior
- [Siklus Hidup Aplikasi](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/app-lifecycle.md): 20 pertanyaan, Junior
- [Auto Layout & Constraints](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/auto-layout-constraints.md): 24 pertanyaan, Mid-Level
- [UITableView & UICollectionView](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/uitableview-uicollectionview.md): 25 pertanyaan, Mid-Level
- [Dasar-Dasar SwiftUI](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swiftui-basics.md): 18 pertanyaan, Mid-Level
- [Manajemen State SwiftUI](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swiftui-state-management.md): 22 pertanyaan, Mid-Level
- [Navigasi SwiftUI](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swiftui-navigation.md): 18 pertanyaan, Mid-Level
- [Networking & URLSession](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/networking-urlsession.md): 20 pertanyaan, Mid-Level
- [Codable & Parsing JSON](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/codable-json-parsing.md): 20 pertanyaan, Mid-Level
- [Core Data](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/core-data.md): 22 pertanyaan, Mid-Level
- [Pemrograman Berorientasi Protokol](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/protocol-oriented-programming.md): 20 pertanyaan, Mid-Level
- [Notifikasi Push](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/push-notifications.md): 18 pertanyaan, Mid-Level
- [Unit Testing & XCTest](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/unit-testing-xctest.md): 20 pertanyaan, Mid-Level
- [Pengujian UI](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/ui-testing.md): 18 pertanyaan, Mid-Level
- [Xcode & Sistem Build](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/xcode-build-system.md): 16 pertanyaan, Mid-Level
- [Swift Package Manager](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swift-package-manager.md): 16 pertanyaan, Mid-Level
- [Memory Management & ARC](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/memory-management-arc.md): 22 pertanyaan, Senior
- [Combine Framework](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/combine-framework.md): 24 pertanyaan, Senior
- [Concurrency & async/await](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/concurrency-async-await.md): 26 pertanyaan, Senior
- [iOS Design Patterns](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/ios-design-patterns.md): 24 pertanyaan, Senior
- [Optimasi Performa](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/performance-optimization.md): 22 pertanyaan, Senior
- [Keamanan dan Enkripsi](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/security-encryption.md): 20 pertanyaan, Senior
- [SwiftUI Advanced](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/swiftui-advanced.md): 22 pertanyaan, Senior
- [Arsitektur Aplikasi iOS](https://sharpskill.dev/id/technologies/ios/pertanyaan-wawancara/ios-app-architecture.md): 22 pertanyaan, Senior

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