我在 App Store 中有一个 Android 应用。它在后端使用 Firebase，并通过 Facebook(和 Google)提供社交登录。
最近 Facebook 联系我，警告我通过 Facebook 登录时我的应用程序崩溃/无响应。很困惑，我开始了一些测试。
我发现，如果我在没有安装 Facebook 应用程序的情况下使用 Facebook 登录，一切正常。用户会看到一个浏览器窗口，可以登录，然后他们会被重定向回我的应用程序，我有他们的身份。当然，我在开发过程中发现了这一切，但只是想确认一切仍然有效。
但是当我安装 Facebook 应用程序时(我在开发过程中忽略了这件事)，我发现它不再工作了。相反，用户被重定向到这个页面:
对于搜索和可访问性，此图像中的文本为:
Login Error: There is an error in logging you into this application. Please try again later.
我检查了发生这种情况时的日志，发现以下可能是相关的，但我不太确定:
07-05 15:36:28.468 908 5828 I ActivityManager: START u0 {act=NATIVE_WITH_FALLBACK cmp=<<redacted>>/com.facebook.FacebookActivity (has extras)} from uid 10264
07-05 15:36:28.469 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:28.470 665 665 D QCOM PowerHAL: Activity launch hint handled
07-05 15:36:28.495 4837 4837 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@e64bd3e
07-05 15:36:28.689 665 665 D QCOM PowerHAL: LAUNCH HINT: OFF
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: Exception during service
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: X.2LH: [code] 404 [message]: Key hash GtvUdcOKFRAE0RY0LIw5veCA+M8= does not match any stored key hashes. (404) [extra]: null
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.1eL.C(:93)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.2sO.C(:26)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.CvC.umA(:38)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.2yi.handleResponse(:224)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.1dO.run(:71)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:458)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.0r0.run(:2)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.1qG.run(:2)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.12V.run(:3)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at X.1xB.run(:12)
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: at java.lang.Thread.run(Thread.java:764)
07-05 15:36:28.981 908 8581 I ActivityManager: START u0 {cmp=com.facebook.katana/.ProxyAuth (has extras)} from uid 10264
07-05 15:36:28.982 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:28.983 665 665 D QCOM PowerHAL: Activity launch hint handled
07-05 15:36:29.022 29406 29406 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@4f13a10
07-05 15:36:29.037 29406 29406 E Instrumentation: Uninitialized ActivityThread, likely app-created Instrumentation, disabling AppComponentFactory
07-05 15:36:29.037 29406 29406 E Instrumentation: java.lang.Throwable
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.Instrumentation.getFactory(Instrumentation.java:1224)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
07-05 15:36:29.037 29406 29406 E Instrumentation: at X.05O.newActivity(:3382)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2869)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.os.Handler.dispatchMessage(Handler.java:106)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.os.Looper.loop(Looper.java:193)
07-05 15:36:29.037 29406 29406 E Instrumentation: at android.app.ActivityThread.main(ActivityThread.java:6718)
07-05 15:36:29.037 29406 29406 E Instrumentation: at java.lang.reflect.Method.invoke(Native Method)
07-05 15:36:29.037 29406 29406 E Instrumentation: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
07-05 15:36:29.037 29406 29406 E Instrumentation: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
07-05 15:36:29.045 908 2933 I ActivityManager: START u0 {flg=0x2000000 cmp=com.facebook.katana/com.facebook.gdp.ProxyAuth (has extras)} from uid 10262
07-05 15:36:29.047 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:29.068 29406 29406 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@f095b27
07-05 15:36:29.069 29406 29406 E Instrumentation: Uninitialized ActivityThread, likely app-created Instrumentation, disabling AppComponentFactory
07-05 15:36:29.069 29406 29406 E Instrumentation: java.lang.Throwable
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.Instrumentation.getFactory(Instrumentation.java:1224)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
07-05 15:36:29.069 29406 29406 E Instrumentation: at X.05O.newActivity(:3382)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2869)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.os.Handler.dispatchMessage(Handler.java:106)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.os.Looper.loop(Looper.java:193)
07-05 15:36:29.069 29406 29406 E Instrumentation: at android.app.ActivityThread.main(ActivityThread.java:6718)
07-05 15:36:29.069 29406 29406 E Instrumentation: at java.lang.reflect.Method.invoke(Native Method)
07-05 15:36:29.069 29406 29406 E Instrumentation: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
07-05 15:36:29.069 29406 29406 E Instrumentation: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
07-05 15:36:29.074 908 5828 I ActivityManager: START u0 {cmp=com.facebook.katana/com.facebook.gdp.LightWeightProxyAuthActivity (has extras)} from uid 10262
07-05 15:36:29.075 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:29.121 29406 29406 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@d695c17
07-05 15:36:29.125 29406 29406 E Instrumentation: Uninitialized ActivityThread, likely app-created Instrumentation, disabling AppComponentFactory
07-05 15:36:29.125 29406 29406 E Instrumentation: java.lang.Throwable
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.Instrumentation.getFactory(Instrumentation.java:1224)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
07-05 15:36:29.125 29406 29406 E Instrumentation: at X.05O.newActivity(:3382)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2869)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.os.Handler.dispatchMessage(Handler.java:106)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.os.Looper.loop(Looper.java:193)
07-05 15:36:29.125 29406 29406 E Instrumentation: at android.app.ActivityThread.main(ActivityThread.java:6718)
07-05 15:36:29.125 29406 29406 E Instrumentation: at java.lang.reflect.Method.invoke(Native Method)
07-05 15:36:29.125 29406 29406 E Instrumentation: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
07-05 15:36:29.125 29406 29406 E Instrumentation: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
07-05 15:36:29.166 4837 4846 W System : A resource failed to call end.
07-05 15:36:29.250 665 665 D QCOM PowerHAL: LAUNCH HINT: OFF
07-05 15:36:29.266 908 952 I ActivityManager: Displayed com.facebook.katana/com.facebook.gdp.LightWeightProxyAuthActivity: +237ms
07-05 15:36:29.266 29463 29463 W BackgroundBroad: type=1400 audit(0.0:9257): avc: denied { read } for name="stats" dev="proc" ino=4026533031 scontext=u:r:untrusted_app:s0:c6,c257,c512,c768 tcontext=u:object_r:proc_qtaguid_stat:s0 tclass=file permissive=0
07-05 15:36:29.447 492 1273 D SurfaceFlinger: duplicate layer name: changing Surface(name=6e58560 com.facebook.katana/com.facebook.gdp.LightWeightProxyAuthActivity)/@0x13e5ed5 - animation-leash to Surface(name=6e58560 com.facebook.katana/com.facebook.gdp.LightWeightProxyAuthActivity)/@0x13e5ed5 - animation-leash#1
07-05 15:36:29.456 492 1273 D SurfaceFlinger: duplicate layer name: changing Surface(name=Dim Layer for - Task=2317)/@0x8471ddb - animation-leash to Surface(name=Dim Layer for - Task=2317)/@0x8471ddb - animation-leash#1
07-05 15:36:29.465 908 2933 I ActivityManager: START u0 {cmp=com.facebook.katana/.gdp.WebViewProxyAuth (has extras)} from uid 10262
07-05 15:36:29.467 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:29.469 665 665 D QCOM PowerHAL: Activity launch hint handled
07-05 15:36:29.507 29406 29406 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@a7d9bb4
07-05 15:36:29.509 29406 29406 E Instrumentation: Uninitialized ActivityThread, likely app-created Instrumentation, disabling AppComponentFactory
07-05 15:36:29.509 29406 29406 E Instrumentation: java.lang.Throwable
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.Instrumentation.getFactory(Instrumentation.java:1224)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
07-05 15:36:29.509 29406 29406 E Instrumentation: at X.05O.newActivity(:3382)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2869)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.os.Handler.dispatchMessage(Handler.java:106)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.os.Looper.loop(Looper.java:193)
07-05 15:36:29.509 29406 29406 E Instrumentation: at android.app.ActivityThread.main(ActivityThread.java:6718)
07-05 15:36:29.509 29406 29406 E Instrumentation: at java.lang.reflect.Method.invoke(Native Method)
07-05 15:36:29.509 29406 29406 E Instrumentation: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
07-05 15:36:29.509 29406 29406 E Instrumentation: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
07-05 15:36:29.517 908 8581 I ActivityManager: START u0 {cmp=com.facebook.katana/.gdp.ProxyAuthDialog (has extras)} from uid 10262
07-05 15:36:29.519 665 665 D QCOM PowerHAL: LAUNCH HINT: ON
07-05 15:36:29.567 29406 29406 W ActivityThread: handleWindowVisibility: no activity for token android.os.BinderProxy@19959e4
07-05 15:36:29.569 29406 29406 E Instrumentation: Uninitialized ActivityThread, likely app-created Instrumentation, disabling AppComponentFactory
07-05 15:36:29.569 29406 29406 E Instrumentation: java.lang.Throwable
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.Instrumentation.getFactory(Instrumentation.java:1224)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.Instrumentation.newActivity(Instrumentation.java:1215)
07-05 15:36:29.569 29406 29406 E Instrumentation: at X.05O.newActivity(:3382)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2869)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3086)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1816)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.os.Handler.dispatchMessage(Handler.java:106)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.os.Looper.loop(Looper.java:193)
07-05 15:36:29.569 29406 29406 E Instrumentation: at android.app.ActivityThread.main(ActivityThread.java:6718)
07-05 15:36:29.569 29406 29406 E Instrumentation: at java.lang.reflect.Method.invoke(Native Method)
07-05 15:36:29.569 29406 29406 E Instrumentation: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
07-05 15:36:29.569 29406 29406 E Instrumentation: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
07-05 15:36:29.651 492 540 D SurfaceFlinger: duplicate layer name: changing com.facebook.katana/com.facebook.katana.gdp.ProxyAuthDialog to com.facebook.katana/com.facebook.katana.gdp.ProxyAuthDialog#1
07-05 15:36:29.697 492 1763 D SurfaceFlinger: duplicate layer name: changing Dim Layer for - Task=2317 to Dim Layer for - Task=2317#1
07-05 15:36:29.720 665 665 D QCOM PowerHAL: LAUNCH HINT: OFF
07-05 15:36:29.731 492 540 W SurfaceFlinger: Attempting to set client state on removed layer: Dim Layer for - Task=2317#0
07-05 15:36:29.731 492 540 W SurfaceFlinger: Attempting to destroy on removed layer: Dim Layer for - Task=2317#0
我注意到NATIVE_WITH_FALLBACK模式的使用，改成WEB_ONLY进行测试。虽然这让我克服了上图所示的原始问题，但它创造了另一个问题。它没有询问我登录详细信息，而是显示以下内容:
同样，文本是:
You previously logged in to $MY_APP with Facebook. Would you like to continue?
如果我选择继续(除了取消别无选择)，它会返回到我的应用程序，但 Firebase 给我 ERROR_ACCOUNT_EXISTS_WITH_DIFFERENT_CREDENTIAL 错误，表明该帐户已与另一个提供商相关联。当我 checkin Firebase 控制台时，该帐户显示为 Facebook 帐户。所以这就像安装 Facebook 应用让 Firebase 认为它是一个独立的社交提供者之类的。
最后，有点绝望，我尝试将身份验证模式切换为WEB_VIEW_ONLY。果然，这向我展示了与在未安装 Facebook 的情况下登录时完全相同的体验。此外，一切都按预期进行。
我的问题是我不完全确定这一切的含义是什么(注意:请参阅下面的更新)。我记得在某处读到过关于原生 Facebook 登录不再是一件事(或者可能正好相反，应该使用它)。基本上，我很困惑，非常感谢以下问题的任何答案:
- 使用
WEB_VIEW_ONLY是否可以接受？ - 为什么使用
NATIVE_WITH_FALLBACK会在我的帖子开头显示错误？ - 为什么
WEB_ONLY似乎将同一个帐户视为不同的提供商？ - 为什么 Facebook 登录 SDK 在这些模式下的行为如此不同？我认为它们是一种无害的偏好，对身份验证本身没有任何影响，但天哪，我错了。
请注意，在所有情况下，我都在关注 the official docs ，包括使用最新的 SDK 版本:
implementation 'com.facebook.android:facebook-login:[5,6)'
感谢您的帮助。
更新:我将我的应用更新为 WEB_VIEW_ONLY 并重新提交。 Facebook 现在告诉我:
Your App now is in violation of Platform Policy 8.2: Native iOS and Android apps that implement Facebook Login must use our official SDKs for Login. Please make sure your app is using the most recent version of our SDK for Login.
所以我现在陷入了困境。
最佳答案
关于这个问题的解释如下:
07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: Exception during service 07-05 15:36:28.946 29406 4941 W fb4a.BlueServiceQueue: X.2LH: [code] 404 [message]: Key hash GtvUdcOKFRAE0RY0LIw5veCA+M8= does not match any stored key hashes. (404) [extra]: null
请记住，您在 Facebook 应用程序中配置的 Key Hash 与您的应用程序所使用的 keystore (证书)相关。
您必须使用您签署应用程序的 key 哈希，如果您不知道，我建议您从您的 keystore 中重新获取它:
https://developers.facebook.com/docs/android/getting-started/
Why does the Facebook login SDK behave so very differently across these modes? I thought of them as being an innocuous preference that didn't have any impact on authentication itself, but gosh was I wrong.
在网络中你没有问题，但如果你在一个应用程序中，你需要授权使用该应用程序，并且非常重要对于 android 应用程序中的此实现，你需要使用 Facebook SDK，在这种情况下，您需要获取用于签署您的应用程序的 key 哈希证书。
关于android - 为什么 Facebook 身份验证 SDK 在不同模式下的行为如此不同？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/56897940/