React Native 采集

使用原生模块从 React Native 应用中打开采集。

Markdown

您的后端使用 Journey 流程和一个采用您应用 URL scheme 的 callbackUri 在 Human Plugin 中创建流程。原生模块会在 iOS 的 ASWebAuthenticationSession 和 Android 的 Custom Tabs 中打开响应里的 link。采集结束后，模块会完成其 promise，应用接管后续流程。

请保留创建响应中的 Human Plugin id。您的后端用它来读取结果。

前提条件

• React Native 0.71 或更高版本
• iOS 需要 Xcode 14 或更高版本
• Android 需要 Android Studio
• 您应用独有的 URL scheme，例如 myapp

1. 使用您的 scheme 创建流程

您的后端将该 scheme 作为 callbackUri 发送：

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

并将 id 和 link 返回给应用。

2. 创建 TypeScript 桥接

// 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. 实现 iOS 模块

Objective-C 桥接

// 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

Swift 实现

// 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. 实现 Android 模块

将依赖添加到 android/app/build.gradle：

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

// 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
        }
    }
}

// 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()
}

在 MainApplication.kt 中注册：

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

在 MainActivity.kt 中处理返回：

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. 在 Android 上注册您的 scheme

在 AndroidManifest.xml 中：

<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. 启动采集

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

try {
  await Capture.openSession(link);
  // The capture ended. Ask your back-end to read the outcome
  // with GET /v1/processes/{id}, using the Human Plugin id.
} catch {
  // The person closed the session.
}

总结

文件	用途
src/modules/CaptureModule.ts	TypeScript 桥接
ios/CaptureModule.m	Objective-C 声明
ios/CaptureModule.swift	iOS：ASWebAuthenticationSession
android/.../CaptureModule.kt	Android：Custom Tabs
android/.../CapturePackage.kt	Package 注册
android/.../MainApplication.kt	添加该 package
android/.../MainActivity.kt	处理返回
AndroidManifest.xml	Intent filter