Native modules a gida in React Native nawa?

Question

IT Interview Practice · Accepted Answer

**Native modules** suna ba da damar React Native (JavaScript) access **native platform code and features** (iOS/Android) waɗanda ba a samu ta hanyar JavaScript — bridging zuwa native APIs, SDKs, ko custom native functionality. Suna fadada React Native waje da abin da JS kadai yake bayarwa.

## Me yasa native modules suke akwai

```text
React Native's JavaScript can't directly access every native capability. NATIVE MODULES
bridge JS to native code (Swift/Objective-C on iOS, Kotlin/Java on Android):
  → access native APIs/SDKs not exposed to JS
  → use existing native libraries
  → implement performance-critical or platform-specific functionality in native code
→ The bridge between React Native's JS and the native platform.
```

## Amfani da native modules (galibi ta hanyar libraries)

```text
→ MOST native functionality is available via EXISTING LIBRARIES (npm packages that
  include native modules): camera, geolocation, Bluetooth, payments, push notifications, etc.
  → you usually INSTALL a library rather than writing native code yourself
→ EXPO provides many native APIs without writing native code (managed modules)
→ You WRITE a custom native module only when no library exists for your need
```

## Rubuta custom native module (tunani)

```text
→ Write native code (Swift/Kotlin) exposing methods to JS
→ Register/expose it so JS can call it (via the bridge / new architecture's TurboModules)
→ Call it from JavaScript like a regular module
→ Requires native development knowledge; platform-specific implementation per OS
→ The NEW ARCHITECTURE (JSI, TurboModules, Fabric) improves native interop performance
```

## Me yasa ya matukar mahimmanci

Ju da native modules yana da daraja domin sune **yadda React Native ke access native platform capabilities** waje da abin da JavaScript ke bayarwa, ƙarfin mahimmanci don apps da bukacin native features, saboda haka ilimi mai amfani ne don React Native development.

Ainihin bukatun — React Native's JavaScript ba za ya iya direct access kowane native capability ba, saboda haka **native modules suna jajaye JS zuwa native code** (Swift/Objective-C, Kotlin/Java) — yadda React Native ke access device features (camera, geolocation, Bluetooth, push notifications), amfani da native SDKs, da aiwatar da abubuwan da suke da karfin aiki ko tamkar platform-specific functionality.

Ju da **zahirin aiki** yana da mahimmanci: **mafi yawan native functionality yana akwai ta hanyar libraries da akwai** (npm packages waɗanda suke haɗa native modules) ko **Expo's managed native APIs**, saboda haka sau da yawa **ka shigar da library maimakon rubuta native code kanka** — meaning mafi yawan developers suna cinye native modules ta hanyar libraries maimakon rubuta su, mahimman aiki na aiki waɗanda ke saita zahirin akwai.

Ju da cewa ka **rubuta custom native module kawai idan babu library** don ƙasar bukatu (waɗanda suke neman native development knowledge da per-platform implementation) yana bayyana lokacin da custom native aiki yana da bukata.

Sanin da **sabuwar architecture** (JSI, TurboModules, Fabric) yana inganta native interop performance yana nuna fahimta ga React Native's migration.

Native modules ne yadda React Native ke haɗi da native platform, mahimmanci don apps tare da native requirements, kodayake mafi yawan bukatu ana gamsuwa su ta hanyar libraries da akwai.

Domin access native capabilities a wasu lokuta yana da mahimmanci (don device features da native integration) da native modules (galibi ta hanyar libraries, a wasu lokuta custom) sune React Native's mechanism gare shi, da sanin yadda suke aiki da cewa mafi yawan bukatu ana gamsuwa ta hanyar libraries da akwai maimakon custom native code yana da daraja don React Native development, sanin yadda native modules ke gajiye — haɗi da ke ba da damar React Native access native features, mahimmanci don apps tare da native needs yayin da ke bayyana cewa mafi yawan functionality ya je daga libraries da akwai maimakon custom native code, ilimi mai amfani don aiki tare da React Native's native capabilities.

Me yasa native modules suke akwai

Amfani da native modules (galibi ta hanyar libraries)

Rubuta custom native module (tunani)

Me yasa ya matukar mahimmanci

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