问题描述
在Android上，我突然无法使Metro Bundle服务器工作。在过去的5个小时中，我一直在进行调试，但找不到导致此问题的任何原因。与this问题不同，我的应用程序甚至没有开始显示LogBox红色错误警告。它只是立即崩溃。
每当我尝试运行Android应用程序时（我尝试过各种不同的设置，启用/禁用Hermes，ABI都会拆分，显式强制使用SoLoader版本，剥离所有代码以获得最小的应用程序，清理gradle缓存，将android:usesCleartextTraffic="true"添加到我的AndroidManifest.xml，依此类推...），该应用程序以白屏启动，然后立即崩溃。我设法在Logcat中找到一些异常：
2020-08-11 11:33:52.315 5176-5256/com.mrousavy.springsale E/GraphResponse: {HttpStatus: 400,errorCode: 100,subErrorCode: 33,errorType: GraphMethodException,errorMessage: Unsupported get request. Object with ID '290453355515078' does not exist,cannot be loaded due to missing permissions,or does not support this operation. Please read the Graph API documentation at https://developers.facebook.com/docs/graph-api}
2020-08-11 11:33:52.316 5176-5256/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,linking,allowed)
2020-08-11 11:33:52.316 5176-5264/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.316 5176-5256/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.316 5176-5256/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist,allowed)
2020-08-11 11:33:52.346 5176-5279/com.mrousavy.springsale E/ReactNativeJNI: logMarker CREATE_REACT_CONTEXT_END
2020-08-11 11:33:52.347 5176-5274/com.mrousavy.springsale E/unkNown:ReactNative: ReactInstanceManager.createReactContext: mJSIModulePackage null
2020-08-11 11:33:52.350 5176-5274/com.mrousavy.springsale E/unkNown:disabledDevSupportManager: Caught exception
java.lang.RuntimeException: Unable to load script. Make sure you're either running a Metro server (run 'react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.
at com.facebook.react.bridge.CatalystInstanceImpl.jniLoadScriptFromAssets(Native Method)
at com.facebook.react.bridge.CatalystInstanceImpl.loadScriptFromAssets(CatalystInstanceImpl.java:234)
at com.facebook.react.bridge.JSBundleLoader$1.loadScript(JSBundleLoader.java:29)
at com.facebook.react.bridge.CatalystInstanceImpl.runjsBundle(CatalystInstanceImpl.java:258)
at com.facebook.react.ReactInstanceManager.createReactContext(ReactInstanceManager.java:1293)
at com.facebook.react.ReactInstanceManager.access$1100(ReactInstanceManager.java:131)
at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java:1016)
at java.lang.Thread.run(Thread.java:919)
--------- beginning of crash
2020-08-11 11:33:52.352 5176-5274/com.mrousavy.springsale E/AndroidRuntime: FATAL EXCEPTION: create_react_context
Process: com.mrousavy.springsale,PID: 5176
java.lang.RuntimeException: Unable to load script. Make sure you're either running a Metro server (run 'react-native start') or that your bundle 'index.android.bundle' is packaged correctly for release.
at com.facebook.react.bridge.CatalystInstanceImpl.jniLoadScriptFromAssets(Native Method)
at com.facebook.react.bridge.CatalystInstanceImpl.loadScriptFromAssets(CatalystInstanceImpl.java:234)
at com.facebook.react.bridge.JSBundleLoader$1.loadScript(JSBundleLoader.java:29)
at com.facebook.react.bridge.CatalystInstanceImpl.runjsBundle(CatalystInstanceImpl.java:258)
at com.facebook.react.ReactInstanceManager.createReactContext(ReactInstanceManager.java:1293)
at com.facebook.react.ReactInstanceManager.access$1100(ReactInstanceManager.java:131)
at com.facebook.react.ReactInstanceManager$5.run(ReactInstanceManager.java:1016)
at java.lang.Thread.run(Thread.java:919)
2020-08-11 11:33:52.498 13316-13413/? E/ActivityThread: Failed to find provider info for com.google.android.apps.wellbeing.api
2020-08-11 11:33:52.725 5176-5237/com.mrousavy.springsale D/libcrashlytics: Initializing libcrashlytics version 2.0.5
2020-08-11 11:33:52.725 5176-5237/com.mrousavy.springsale D/libcrashlytics: Initializing native crash handling successful.
2020-08-11 11:33:52.726 5176-5237/com.mrousavy.springsale I/FirebaseCrashlytics: Crashlytics NDK initialization successful
2020-08-11 11:33:52.743 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->getobject(Ljava/lang/Object;J)Ljava/lang/Object; (greylist,allowed)
2020-08-11 11:33:52.743 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putObject(Ljava/lang/Object;JLjava/lang/Object;)V (greylist,allowed)
2020-08-11 11:33:52.743 5176-5263/com.mrousavy.springsale W/FirebaseRemoteConfig: No value of type 'FirebaseRemoteConfigValue' exists for parameter key 'fpr_session_max_duration_min'.
2020-08-11 11:33:52.744 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->getInt(Ljava/lang/Object;J)I (greylist,allowed)
2020-08-11 11:33:52.744 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.744 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->getLong(Ljava/lang/Object;J)J (greylist,core-platform-api,allowed)
2020-08-11 11:33:52.744 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putLong(Ljava/lang/Object;JJ)V (greylist,allowed)
2020-08-11 11:33:52.745 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.745 5176-5263/com.mrousavy.springsale I/chatty: uid=10146(com.mrousavy.springsale) pool-25-thread- identical 1 line
2020-08-11 11:33:52.746 5176-5263/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.750 5176-5264/com.mrousavy.springsale W/savy.springsal: Accessing hidden method Lsun/misc/Unsafe;->putInt(Ljava/lang/Object;JI)V (greylist,allowed)
2020-08-11 11:33:52.823 2030-5291/? W/ActivityTaskManager: Force finishing activity com.mrousavy.springsale/.MainActivity
2020-08-11 11:33:52.824 2030-5288/? I/DropBoxManagerService: add tag=data_app_crash isTagEnabled=true flags=0x2
2020-08-11 11:33:52.836 5176-5274/com.mrousavy.springsale I/Process: Sending signal. PID: 5176 SIG: 9
2020-08-11 11:33:52.837 2030-2057/? W/broadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.DROPBox_ENTRY_ADDED flg=0x10 (has extras) } to com.google.android.gms/.stats.service.DropBoxEntryAddedReceiver
2020-08-11 11:33:52.838 2030-2057/? W/broadcastQueue: Background execution not allowed: receiving Intent { act=android.intent.action.DROPBox_ENTRY_ADDED flg=0x10 (has extras) } to com.google.android.gms/.chimera.GmsIntentOperationService$PersistentTrustedReceiver
2020-08-11 11:33:52.930 2030-2130/? W/Inputdispatcher: channel '4b40fe1 com.mrousavy.springsale/com.mrousavy.springsale.MainActivity (server)' ~ Consumer closed input channel or an error occurred. events=0x9
2020-08-11 11:33:52.930 2030-2130/? E/Inputdispatcher: channel '4b40fe1 com.mrousavy.springsale/com.mrousavy.springsale.MainActivity (server)' ~ Channel is unrecoverably broken and will be disposed!
2020-08-11 11:33:52.936 2030-3089/? I/WindowManager: WIN DEATH: Window{4b40fe1 u0 com.mrousavy.springsale/com.mrousavy.springsale.MainActivity}
2020-08-11 11:33:52.936 2030-3089/? W/Inputdispatcher: Attempted to unregister already unregistered input channel '4b40fe1 com.mrousavy.springsale/com.mrousavy.springsale.MainActivity (server)'
2020-08-11 11:33:52.938 2030-2376/? I/ActivityManager: Process com.mrousavy.springsale (pid 5176) has died: vis+99 TOP
当我手动使用以下命令创建JS捆绑包时：
npx react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res
我设法通过Android Studio成功启动了该应用程序，但这当然不是解决方案，因为每次更改某些内容（即使在JS中）时，我都必须运行此命令，所以我没有实时重载再也没有console.log了，而且我的开发经验也很糟糕。
简而言之：我的应用程序无法再通过localhost上的Metro bundler服务器流式传输捆绑包，但是当我手动创建捆绑包时它可以工作。它甚至没有启动Metro Bundler！在iOS上有效。
解决方法
所以事实证明这是一个依赖关系问题。如果其他人遇到这个问题，请将您的项目与“模板”项目（在 react-native repo 中）进行比较，尤其是查看 package.json 中的所有版本！对我来说，我有 Metro-config 0.65，这对于 RN 0.63 来说太新了。