我的应用程序在模拟器中运行良好，但当我尝试将其安装到我的 iPhone 上时，它显示
App installation failed: An unknown error has occurred.
我打开了我的设备日志并得到了这个:
Nov 12 21:17:19 Isaacs-iPhone streaming_zip_conduit[5853] : LaunchServices: installing app for existing placeholder Raritea.FSS-App <(null) Not found in database> Nov 12 21:17:19 Isaacs-iPhone streaming_zip_conduit[5853] : LaunchServices: Not creating progress for Raritea.FSS-App <(null) Not found in database> since it is not a placeholder. Nov 12 21:17:19 Isaacs-iPhone installd[4549] : 0x16e1bb000 -[MIClientConnection installPath:withOptions:completion:]: Install of "/var/mobile/Media/PublicStaging/FSS App.app" type Developer (LSInstallType = (null)) requested by streaming_zip_conduit (pid 5853) Nov 12 21:17:19 Isaacs-iPhone installd[4549] : 0x16e12f000 -[MIInstaller performInstallationWithError:]: Installing Nov 12 21:17:20 Isaacs-iPhone profiled[4644] : (Note ) MC: Provisioning profiles changed Nov 12 21:17:20 Isaacs-iPhone profiled[4644] : (Note ) MC: Updating MIS trust... Nov 12 21:17:20 Isaacs-iPhone securityd[4588] : secTaskDiagnoseEntitlements MISSING keychain entitlements: no stored taskRef found Nov 12 21:17:20 Isaacs-iPhone securityd[4588] : secTaskDiagnoseEntitlements MISSING keychain entitlements: no stored taskRef found Nov 12 21:17:20 Isaacs-iPhone installd[4549] : SecTrustEvaluate [leaf IssuerCommonName SubjectCommonName] Nov 12 21:17:20 Isaacs-iPhone profiled[4644] : (Note ) MC: Provisioning profiles changed Nov 12 21:17:20 Isaacs-iPhone profiled[4644] : (Note ) MC: Updating MIS trust... Nov 12 21:17:20 Isaacs-iPhone installd[4549] : unrecognized status -67049 from codesigning library Nov 12 21:17:20 Isaacs-iPhone installd[4549] : 0x16e12f000 +[MICodeSigningVerifier _validateSignatureAndCopyInfoForURL:withOptions:error:]: 142: Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex : 0xe8008001 (An unknown error has occurred.) Nov 12 21:17:20 Isaacs-iPhone installd[4549] : 0x16e12f000 -[MIInstaller performInstallationWithError:]: Verification stage failed Nov 12 21:17:20 Isaacs-iPhone streaming_zip_conduit[5853] : 0x16e087000 __MobileInstallationInstallForLaunchServices_block_invoke222: Returned error Error Domain=MIInstallerErrorDomain Code=13 "Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex : 0xe8008001 (An unknown error has occurred.)" UserInfo={LibMISErrorNumber=-402620415, LegacyErrorString=ApplicationVerificationFailed, SourceFileLine=142, FunctionName=+[MICodeSigningVerifier _validateSignatureAndCopyInfoForURL:withOptions:error:], NSLocalizedDescription=Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex : 0xe8008001 (An unknown error has occurred.)} Nov 12 21:17:20 Isaacs-iPhone streaming_zip_conduit[5853] : ERROR: MobileInstallationInstallForLaunchServices returned nil Nov 12 21:17:20 Isaacs-iPhone streaming_zip_conduit[5853] : __dispatch_source_read_socket_block_invoke:274: Failed to install application at file:///var/mobile/Media/PublicStaging/FSS%20App.app/ : Error Domain=LaunchServicesError Code=0 "(null)" UserInfo={Error=ApplicationVerificationFailed, ErrorDetail=-402620415, ErrorDescription=Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex : 0xe8008001 (An unknown error has occurred.)}
最佳答案
设备日志中的这一行让我印象深刻，希望你也看到了:
Failed to verify code signature of /private/var/mobile/Library/Caches/com.apple.mobile.installd.staging/temp.FvOJz0/extracted/FSS App.app/PlugIns/QuickSched.appex
这就是说(尽管 Xcode 在构建时认为一切正常)，您的设备拒绝了您的应用扩展的代码签名。
有几个解决方案here ，但根据我个人的经验，这个问题只能通过修改应用程序和应用程序扩展的代码签名设置来解决。确保应用程序和应用程序扩展使用相同的证书签名(尽管可能有不同的配置文件)。
正如其他人所建议的那样，我还可以通过在 Xcode 中为项目运行 Clean 操作以及 deleting the derived data directories 来解决此问题。 .但我在这方面并不总是成功。
关于ios - 应用安装失败 : Unknown Error Xcode 7，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/33684901/