# Manajemen Data Android (Android)

> SharedPreferences, DataStore, File I/O, Internal/External Storage, Scoped Storage

- 29 pertanyaan wawancara
- Junior
- [Pertanyaan Wawancara: Android](https://sharpskill.dev/id/technologies/android/pertanyaan-wawancara.md)

## 1. Apa itu SharedPreferences di Android?

**Jawaban**

SharedPreferences adalah sistem penyimpanan key-value sederhana untuk menyimpan data primitif (int, boolean, float, long, String, Set<String>). Data tetap ada di antara sesi aplikasi dan restart. Ideal untuk preferensi pengguna, pengaturan, data kecil. API sederhana: getSharedPreferences(), edit(), putString(), apply()/commit().

## 2. Bagaimana menyimpan nilai di SharedPreferences?

**Jawaban**

Dapatkan instance: val prefs = context.getSharedPreferences('name', Context.MODE_PRIVATE). Edit: val editor = prefs.edit(); editor.putString('key', 'value'); editor.apply() (async) atau editor.commit() (sync). Bisa juga di-chain: prefs.edit().putString('key', 'value').apply().

## 3. Apa perbedaan antara apply() dan commit()?

**Jawaban**

apply() bersifat asinkron (menulis di latar belakang, tidak memblokir thread UI), tidak mengembalikan apa-apa, direkomendasikan di sebagian besar kasus. commit() bersifat sinkron (memblokir sampai ditulis), mengembalikan boolean (true jika sukses), berguna jika perlu memverifikasi keberhasilan segera. apply() lebih performant untuk UI.

## 26 pertanyaan lagi tersedia

- Bagaimana membaca nilai dari SharedPreferences?
- Apa itu Jetpack DataStore?

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