Piye cara nglola state ing aplikasi React Native?

Question

Accepted Answer

State management ing React Native (kaya ing React) saka local component state (useState) nganti shared/global state via **Context**, utawa library kayata **Redux**, **Zustand**, lan liya-liyane. Mangerteni pilihan lan kapan nggunakake saben-saben penting nalika aplikasi berkembang.

## Local state lan lifting state up

```text
useState → local component state (simple, for one component)
LIFTING STATE UP → move shared state to a common parent, pass down via props
  → works for moderate sharing, but "PROP DRILLING" (passing through many layers) is painful
```

## Context API — built-in shared state

```jsx
// Context shares state across the tree WITHOUT prop drilling (built into React)
const ThemeContext = createContext();
// provide it high in the tree; consume with useContext anywhere below
const theme = useContext(ThemeContext);
// → good for low-frequency global data (theme, auth, user); can cause re-renders if overused
```

## State management libraries

```text
For complex/global state, libraries help:
  REDUX (+ Redux Toolkit) → predictable centralized store; structured; popular for large
    apps; more boilerplate (RTK reduces it)
  ZUSTAND → minimal, simple, hooks-based store — popular modern lightweight choice
  Jotai / Recoil → atomic state; MobX → observable state
  React Query / TanStack Query → for SERVER state (caching, fetching) — often used
    alongside (handles API data, loading, caching)
```

## Choosing

```text
Simple/local → useState; moderate sharing → lift up / Context
Complex global app state → Redux Toolkit or Zustand (by preference/complexity)
Server/API data → React Query (caching, sync) — distinct from client state
→ Don't over-engineer; match the solution to the app's complexity.
```

## Mengapa Penting

Mangerteni state management penting jalaran **cara aplikasi nglola lan nuduhake state minangka perhatian arsitektur sing signifikan** sing berkembang karo kompleksitas aplikasi, dadi iku pengetahuan berharga kanggo mbangun aplikasi React Native nyata.

State management ing React Native kerja kaya React, saka singel nganti sophisticated.

Mangerteni **local state** (useState) lan **lifting state up** (mindhah shared state menyang parent umum) nutupi kebutuhan dhasar, sambi ngenali **prop-drilling problem** (ngirim state liwat akeh lapisan dadi nyeri) motivasi solusi sing luwih apik.

**Context API** (cara React built-in kanggo nuduhake state sajarone tree tanpa prop drilling) apik kanggo low-frequency global data (tema, auth, user saiki), sanajan bisa dadi re-render menawa digunakake berlebihan.

Mangerteni **state management libraries** kanggo complex/global state — **Redux** (karo Redux Toolkit, centralized store sing predictable, structured lan populer kanggo aplikasi gede), **Zustand** (minimal, simpel, hooks-based, pilihan modern populer sing ringan), lan liya-liyane (Jotai, MobX) — nyedhiyakake pilihan kanggo nglola state aplikasi sing signifikan.

Mahalnya, mangerteni **React Query/TanStack Query kanggo server state** (caching lan syncing API data, kawatak saka client state) nggambarake pengakuan modern yen **server state lan client state minangka keprihatinan beda** (API data karo caching/fetching asring dadi diresani kapisanan) — kawatak berharga, kawatak sing saya penting.

Mangerteni carane **choosing** (useState kanggo lokal, Context kanggo moderate sharing, Redux Toolkit utawa Zustand kanggo complex global state, React Query kanggo server data, tanpa over-engineering) nggambarake judgment apik sing padha solusi karo kompleksitas.

Amarga state management minangka perhatian arsitektur signifikan sing gandheng mantenabilitas lan scale karo kompleksitas aplikasi, lan amarga mangerteni spectrum (local state, Context, libraries, lan server-vs-client-state distinction) lan choosing appropriately penting kanggo mbangun aplikasi nyata, mangerteni state management ing React Native minangka pengetahuan berharga, praktis-relevan — area arsitektur kunci kanggo mbangun React Native apps sing maintainable, scalable, karo pilihan lan client/server-state distinction minangka penting kanggo sound state architecture.