在测试 iOS 18.4 的默认翻功能时遇到问题

问题描述

我在 Xcode 测试 iOS 18.4 新出的 Translation Provider ，按照 官方文档 添加了 entitlement 、access key 、app extension ，并创建了一个简单的 UI 。
但是启动 App 时出现报错。我是刚接触 iOS 开发没多久，麻烦大家帮忙看看是不是哪里配置有问题。

疑问点

1. 日志中 Invalid placeholder attributes 和 Failed to create promise 具体指什么？

2. 是不是 entitlement 或者 Info.plist 的某些配置有问题？

3. 这种问题一般该怎么排查？

希望有经验的朋友帮忙看看，非常感谢！

错误日志

Simulator device failed to install the application. Domain: IXErrorDomain Code: 2 Failure Reason: Invalid placeholder attributes. User Info: { DVTErrorCreatiOnDateKey= "2025-04-02 04:04:12 +0000"; FunctiOnName= "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; IDERunOperatiOnFailingWorker= IDELaunchiPhoneSimulatorLauncher; SimCallingSelector = "installApplication:withOptions:error:"; SourceFileLine = 981; } -- Failed to create app extension placeholder for /Users/eddiepeng/Library/Developer/Xcode/DerivedData/ExtensionTest-dceeplqjptdufuaucwddasmwjwxd/Build/Products/Debug-iphonesimulator/ExtensionTest.app/PlugIns/TranslationExtensionTest.appex Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctiOnName= "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 981; } -- Failed to set placeholder attributes top.delta17.ExtensionTest.TranslationExtensionTest Domain: IXErrorDomain Code: 2 Failure Reason: Failed to create promise. User Info: { FunctiOnName= "+[IXPlaceholder _placeholderForBundle:client:withParent:installType:metadata:placeholderType:mayBeDeltaPackage:isFromSerializedPlaceholder:error:]"; SourceFileLine = 818; } -- extensionDictionary must be set in placeholder attributes for an app extension placeholder Domain: IXErrorDomain Code: 17 Failure Reason: Invalid placeholder attributes. User Info: { FunctiOnName= "-[IXPlaceholder setPlaceholderAttributes:error:]"; SourceFileLine = 1999; } -- Event Metadata: com.apple.dt.IDERunOperationWorkerFinished : { "device_identifier" = "FE4AA28E-B010-423E-9D5E-FFF66953A896"; "device_model" = "iPhone17,2"; "device_osBuild" = "18.4 (22E238)"; "device_platform" = "com.apple.platform.iphonesimulator"; "device_thinningType" = "iPhone17,2"; "dvt_coredevice_version" = "443.19"; "dvt_coresimulator_version" = "1010.10"; "dvt_mobiledevice_version" = "1784.102.1"; "launchSession_schemeCommand" = Run; "launchSession_state" = 1; "launchSession_targetArch" = arm64; "operation_duration_ms" = 38; "operation_errorCode" = 2; "operation_errorDomain" = IXErrorDomain; "operation_errorWorker" = IDELaunchiPhoneSimulatorLauncher; "operation_name" = IDERunOperationWorkerGroup; "param_debugger_attachToExtensions" = 0; "param_debugger_attachToXPC" = 1; "param_debugger_type" = 3; "param_destination_isProxy" = 0; "param_destination_platform" = "com.apple.platform.iphonesimulator"; "param_diag_113575882_enable" = 0; "param_diag_MainThreadChecker_stopOnIssue" = 0; "param_diag_MallocStackLogging_enableDuringAttach" = 0; "param_diag_MallocStackLogging_enableForXPC" = 1; "param_diag_allowLocationSimulation" = 1; "param_diag_checker_tpc_enable" = 1; "param_diag_gpu_frameCapture_enable" = 0; "param_diag_gpu_shaderValidation_enable" = 0; "param_diag_gpu_validation_enable" = 0; "param_diag_guardMalloc_enable" = 0; "param_diag_memoryGraphOnResourceException" = 0; "param_diag_mtc_enable" = 1; "param_diag_queueDebugging_enable" = 1; "param_diag_runtimeProfile_generate" = 0; "param_diag_sanitizer_asan_enable" = 0; "param_diag_sanitizer_tsan_enable" = 0; "param_diag_sanitizer_tsan_stopOnIssue" = 0; "param_diag_sanitizer_ubsan_enable" = 0; "param_diag_sanitizer_ubsan_stopOnIssue" = 0; "param_diag_showNonLocalizedStrings" = 0; "param_diag_viewDebugging_enabled" = 1; "param_diag_viewDebugging_insertDylibOnLaunch" = 1; "param_install_style" = 2; "param_launcher_UID" = 2; "param_launcher_allowDeviceSensorReplayData" = 0; "param_launcher_kind" = 0; "param_launcher_style" = 0; "param_launcher_substyle" = 0; "param_runnable_appExtensionHostRunMode" = 0; "param_runnable_productType" = "com.apple.product-type.application"; "param_structuredConsoleMode" = 1; "param_testing_launchedForTesting" = 0; "param_testing_suppressSimulatorApp" = 0; "param_testing_usingCLI" = 0; "sdk_canonicalName" = "iphonesimulator18.4"; "sdk_osVersion" = "18.4"; "sdk_variant" = iphonesimulator; } -- System Information macOS Version 15.3.2 (Build 24D81) Xcode 16.3 (23785) (Build 16E140) Timestamp: 2025-04-02T12:04:12+08:00