Linking.getInitialURL() returns the task's first link after a link relaunches a reclaimed Android app

先閱讀 ReactActivity.onNewIntent 和 IntentModule.getInitialURL()；該 issue 指出了這兩個進入點，並包含一個附有 MainActivity 修正的重現程式。在 Android 上依照重現步驟操作，並確認重新啟動的應用程式透過 getInitialURL() 或 url 事件回報 reproducer://second。

Description

When Android ends a backgrounded app's process but keeps its task, a link to the app relaunches it into that task: Android recreates the activity from the task's first intent and passes the link to onNewIntent. The link never reaches JavaScript. Linking.getInitialURL() answers the task's first link, and no url event fires.

IntentModule.getInitialURL() reads currentActivity.intent, and getIntent() keeps returning the task's first intent until the activity calls setIntent() (Activity.onNewIntent). ReactActivity.onNewIntent hands the intent to its delegate without calling setIntent.

Calling setIntent(intent) first in ReactActivity.onNewIntent fixes it: with that line in the reproducer's MainActivity (its verify/set-intent branch), every round below answers reproducer://second. I'm happy to open a PR with it.

Steps to reproduce

1. Build and install the reproducer's release APK: cd ReproducerApp/android && ./gradlew assembleRelease && adb install -r app/build/outputs/apk/release/app-release.apk.
2. Open the first link: adb shell am start -a android.intent.action.VIEW -d reproducer://first com.reproducerapp. The screen shows getInitialURL(): reproducer://first.
3. Background the app and let Android end its process while the task stays in Recents: adb shell input keyevent KEYCODE_HOME, adb shell am start -a android.settings.SETTINGS, adb shell input keyevent KEYCODE_HOME, then adb shell am kill com.reproducerapp until adb shell pidof com.reproducerapp prints nothing.
4. Open the second link: adb shell am start -a android.intent.action.VIEW -d reproducer://second com.reproducerapp.

Expected: getInitialURL(): reproducer://second, or a url event carrying it.

Actual: getInitialURL(): reproducer://first and last url event: null.

A cold start on the second link (adb shell am force-stop com.reproducerapp, then step 4) shows reproducer://second.

React Native Version

0.87.1

Affected Platforms

Runtime - Android

Output of npx @react-native-community/cli info

System:
  OS: Windows 11 10.0.26200
  CPU: "(32) x64 AMD Ryzen 9 9950X3D 16-Core Processor          "
  Memory: 170.35 GB / 255.67 GB
Binaries:
  Node:
    version: 26.5.0
    path: C:\Program Files\nodejs\node.EXE
  Yarn:
    version: 1.22.22
    path: C:\Users\<user>\AppData\Roaming\npm\yarn.CMD
  npm:
    version: 12.0.1
    path: C:\Program Files\nodejs\npm.CMD
  Watchman: Not Found
SDKs:
  Android SDK:
    API Levels:
      - "35"
      - "35"
      - "35"
      - "36"
      - "37"
    Build Tools:
      - 35.0.0
      - 36.0.0
      - 36.1.0
      - 37.0.0
    System Images:
      - android-36.1 | Google Play Intel x86_64 Atom
      - android-36.1 | Pre-Release 16 KB Page Size Google Play Intel x86_64 Atom
    Android NDK: Not Found
  Windows SDK: Not Found
IDEs:
  Android Studio: AI-252.27397.103.2522.14617522
  Visual Studio: Not Found
Languages:
  Java:
    version: 17.0.20.1
    path: C:\Program Files\Microsoft\jdk-17.0.20.101-hotspot\bin\javac.EXE
  Ruby: Not Found
npmPackages:
  "@react-native-community/cli":
    installed: 20.2.0
    wanted: 20.2.0
  react:
    installed: 19.2.3
    wanted: 19.2.3
  react-native:
    installed: 0.87.1
    wanted: 0.87.1
  react-native-windows: Not Found
npmGlobalPackages:
  "*react-native*": Not Found
Android:
  hermesEnabled: true
  newArchEnabled: true
iOS:
  hermesEnabled: Not found
  newArchEnabled: Not found

Stacktrace or Logs

Galaxy S23 (SM-S911B), Android 14 (API 34), release build, three rounds of steps 2–4:
round 1: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://first] [last url event: null]
round 2: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://first] [last url event: null]
round 3: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://first] [last url event: null]
cold start on the second link: [getInitialURL(): reproducer://second]

With setIntent(intent) first in MainActivity.onNewIntent, same device and steps:
round 1: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://second] [last url event: null]
round 2: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://second] [last url event: null]
round 3: cold [getInitialURL(): reproducer://first] · relaunched [getInitialURL(): reproducer://second] [last url event: null]

MANDATORY Reproducer

https://github.com/YevheniiKotyrlo/rn-relaunch-link-repro

Screenshots and Videos

The screen after step 4, release build on an Android 16 (API 36) emulator:

stock	with setIntent(intent) in MainActivity.onNewIntent