딥링크 심화 — Universal Links와 App Links

// apple-app-site-association (웹 서버에 배치)
// https://myapp.com/.well-known/apple-app-site-association
{
  "applinks": {
    "apps": [],
    "details": [
      {
        "appID": "TEAMID.com.myapp",
        "paths": ["/detail/*", "/profile/*", "/share/*"]
      }
    ]
  }
}

// Xcode에서 Associated Domains 추가
// Signing & Capabilities → + Capability → Associated Domains
// applinks:myapp.com

<!-- android/app/src/main/AndroidManifest.xml -->
<activity android:name=".MainActivity">
  <intent-filter android:autoVerify="true">
    <action android:name="android.intent.action.VIEW" />
    <category android:name="android.intent.category.DEFAULT" />
    <category android:name="android.intent.category.BROWSABLE" />
    <data android:scheme="https" android:host="myapp.com" android:pathPrefix="/detail" />
  </intent-filter>
</activity>

// assetlinks.json (웹 서버에 배치)
// https://myapp.com/.well-known/assetlinks.json
[{
  "relation": ["delegate_permission/common.handle_all_urls"],
  "target": {
    "namespace": "android_app",
    "package_name": "com.myapp",
    "sha256_cert_fingerprints": ["SHA256:..."]
  }
}]

import { NavigationContainer } from '@react-navigation/native';
import { Linking } from 'react-native';

const linking = {
  prefixes: ['myapp://', 'https://myapp.com'],
  config: {
    screens: {
      MainTabs: {
        screens: {
          Home: 'home',
          Detail: 'detail/:id',
          Profile: 'profile/:userId',
        },
      },
      Settings: 'settings',
    },
  },
  // 앱이 종료된 상태에서 딥링크로 실행 시
  async getInitialURL() {
    const url = await Linking.getInitialURL();
    if (url != null) return url;

    // 푸시 알림에서의 딥링크 처리
    const notification = await getInitialNotification();
    return notification?.data?.deepLink ?? null;
  },
};

function App() {
  return (
    <NavigationContainer linking={linking}>
      <RootNavigator />
    </NavigationContainer>
  );
}

# iOS 시뮬레이터
xcrun simctl openurl booted "https://myapp.com/detail/42"
xcrun simctl openurl booted "myapp://detail/42"

# Android 에뮬레이터
adb shell am start -a android.intent.action.VIEW -d "https://myapp.com/detail/42"

# Expo
npx uri-scheme open "myapp://detail/42" --ios

사용자 → https://myapp.com/detail/42 클릭
→ 앱 미설치 → 앱 스토어로 이동
→ 앱 설치 후 실행
→ detail/42 화면으로 자동 이동 (Deferred Deep Link)