---
title: Captura no React Native
description: Execute a captura de um fluxo Journey em um app React Native com um módulo nativo, usando o link retornado pelo create do Human Plugin.
canonical: https://developer.unico.io/pt-BR/human-plugin/integrations/react-native
locale: pt-BR
generated_by: markdown-export
---

# Captura no React Native

Abra a captura a partir de um app React Native com um módulo nativo.

Seu back-end cria o processo no Human Plugin com um fluxo Journey e um `callbackUri` que usa o URL scheme do seu app. Um módulo nativo abre o `link` da resposta em `ASWebAuthenticationSession` no iOS e em Custom Tabs no Android. Quando a captura termina, o módulo resolve sua promise e o app assume o controle.

Guarde o `id` do Human Plugin retornado pelo create. Seu back-end lê o resultado com ele.

## Pré-requisitos

- React Native 0.71 ou superior
- Xcode 14 ou superior para iOS
- Android Studio para Android
- Um URL scheme exclusivo do seu app, como `myapp`

## 1. Crie o processo com o seu scheme

Seu back-end envia o scheme como `callbackUri`:

```json
{
  "flow": "humantoken",
  "clientId": "client-a",
  "correlationId": "order-1001",
  "credential": { "type": "DUI_TYPE_NG_BVN", "value": "<document number>" },
  "callbackUri": "myapp://callback"
}
```

e devolve `id` e `link` ao app.

## 2. Crie a bridge em TypeScript

```typescript
// src/modules/CaptureModule.ts
import { NativeModules } from 'react-native';

const { CaptureModule } = NativeModules;

if (!CaptureModule) {
  throw new Error('CaptureModule not found. Make sure the native module is linked correctly.');
}

export const Capture = {
  openSession: (url: string): Promise<string> => CaptureModule.openSession(url),
};
```

## 3. Implemente o módulo iOS

### Bridge Objective-C

```objc
// ios/CaptureModule.m
#import <React/RCTBridgeModule.h>

@interface RCT_EXTERN_MODULE(CaptureModule, NSObject)
RCT_EXTERN_METHOD(openSession:(NSString *)url
                  resolve:(RCTPromiseResolveBlock)resolve
                  reject:(RCTPromiseRejectBlock)reject)
@end
```

### Implementação em Swift

```swift
// ios/CaptureModule.swift
import AuthenticationServices

@objc(CaptureModule)
class CaptureModule: NSObject, ASWebAuthenticationPresentationContextProviding {

    private var session: ASWebAuthenticationSession?

    @objc func openSession(_ url: String,
                           resolve: @escaping RCTPromiseResolveBlock,
                           reject: @escaping RCTPromiseRejectBlock) {
        guard let sessionURL = URL(string: url) else {
            reject("INVALID_URL", "Invalid URL", nil)
            return
        }
        DispatchQueue.main.async {
            let newSession = ASWebAuthenticationSession(
                url: sessionURL,
                callbackURLScheme: "myapp"
            ) { callbackURL, error in
                self.session = nil
                if let callbackURL = callbackURL {
                    resolve(callbackURL.absoluteString)
                } else {
                    reject("SESSION_ERROR", error?.localizedDescription ?? "Session cancelled", error)
                }
            }
            newSession.presentationContextProvider = self
            newSession.prefersEphemeralWebBrowserSession = true
            newSession.start()
            self.session = newSession
        }
    }

    func presentationAnchor(for session: ASWebAuthenticationSession) -> ASPresentationAnchor {
        guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene,
              let window = windowScene.windows.first else {
            return ASPresentationAnchor()
        }
        return window
    }

    @objc static func requiresMainQueueSetup() -> Bool { return true }
}
```

## 4. Implemente o módulo Android

Adicione a dependência ao `android/app/build.gradle`:

```groovy
implementation("androidx.browser:browser:1.5.0")
```

```kotlin
// android/app/src/main/java/<your.package>/CaptureModule.kt
package com.yourapp

import android.net.Uri
import androidx.browser.customtabs.CustomTabsIntent
import com.facebook.react.bridge.*

class CaptureModule(private val reactContext: ReactApplicationContext) :
    ReactContextBaseJavaModule(reactContext) {

    private var pendingPromise: Promise? = null

    override fun getName() = "CaptureModule"

    @ReactMethod
    fun openSession(url: String, promise: Promise) {
        pendingPromise = promise
        currentActivity?.runOnUiThread {
            CustomTabsIntent.Builder().build()
                .launchUrl(currentActivity!!, Uri.parse(url))
        } ?: promise.reject("NO_ACTIVITY", "No current activity")
    }

    fun handleRedirectUrl(uri: Uri) {
        if (uri.scheme == "myapp") {
            pendingPromise?.resolve(uri.toString())
            pendingPromise = null
        }
    }
}
```

```kotlin
// CapturePackage.kt
package com.yourapp

import com.facebook.react.ReactPackage
import com.facebook.react.bridge.NativeModule
import com.facebook.react.bridge.ReactApplicationContext
import com.facebook.react.uimanager.ViewManager

class CapturePackage : ReactPackage {
    override fun createNativeModules(ctx: ReactApplicationContext): List<NativeModule> =
        listOf(CaptureModule(ctx))
    override fun createViewManagers(ctx: ReactApplicationContext): List<ViewManager<*, *>> =
        emptyList()
}
```

Registre-o no `MainApplication.kt`:

```kotlin
override fun getPackages(): List<ReactPackage> =
    PackageList(this).packages.apply {
        add(CapturePackage())
    }
```

Trate o retorno no `MainActivity.kt`:

```kotlin
override fun onNewIntent(intent: Intent) {
    super.onNewIntent(intent)
    intent.data?.let { uri ->
        if (uri.scheme == "myapp") {
            val module = reactInstanceManager
                .currentReactContext
                ?.getNativeModule(CaptureModule::class.java)
            module?.handleRedirectUrl(uri)
        }
    }
}
```

## 5. Registre o seu scheme no Android

No `AndroidManifest.xml`:

```xml
<uses-feature android:name="android.hardware.camera" android:required="false" />
<uses-permission android:name="android.permission.CAMERA" />

<activity android:name=".MainActivity" ...>
    <intent-filter>
        <action android:name="android.intent.action.VIEW" />
        <category android:name="android.intent.category.DEFAULT" />
        <category android:name="android.intent.category.BROWSABLE" />
        <data android:scheme="myapp" android:host="callback" />
    </intent-filter>
</activity>
```

## 6. Inicie a captura

```typescript
import { Capture } from './modules/CaptureModule';

try {
  await Capture.openSession(link);
  // A captura terminou. Peça ao seu back-end para ler o resultado
  // com GET /v1/processes/{id}, usando o id do Human Plugin.
} catch {
  // A pessoa fechou a sessão.
}
```

## Resumo

| Arquivo | Finalidade |
|---|---|
| `src/modules/CaptureModule.ts` | Bridge em TypeScript |
| `ios/CaptureModule.m` | Declaração em Objective-C |
| `ios/CaptureModule.swift` | iOS: `ASWebAuthenticationSession` |
| `android/.../CaptureModule.kt` | Android: Custom Tabs |
| `android/.../CapturePackage.kt` | Registro do package |
| `android/.../MainApplication.kt` | Adiciona o package |
| `android/.../MainActivity.kt` | Trata o retorno |
| `AndroidManifest.xml` | Intent filter |