Ios 为什么Xcode不显示应用程序情节提要？

我对Xcode 12.4中的故事板有问题 我的故事板显示不正确

我尝试了以下步骤：

• 重新启动Xcode
• 重新启动macOS
• 清除派生数据
• cmnd+shift+k
• 更换装置

错误日志：

Encountered an error communicating with IBAgent-iOS. (Failure reason: IBAgent-iOS (-1) failed to launch): Failed to launch IBAgent-iOS via CoreSimulator spawn (Failure reason: Failed to spawn IBAgent-iOS on iPhone 12 Pro Max (FF7523FB-FD48-40DF-9429-0C24F7EF6A64, iOS 14.4, Booted)): Invalid device state

Error Domain=com.apple.InterfaceBuilder Code=-1 "Encountered an error communicating with IBAgent-iOS." UserInfo={NSLocalizedFailureReason=IBAgent-iOS (-1) failed to launch, NSUnderlyingError=0x7fe409786840 {Error Domain=com.apple.CoreSimulator.SimError Code=405 "Failed to launch IBAgent-iOS via CoreSimulator spawn" UserInfo={NSLocalizedFailureReason=Failed to spawn IBAgent-iOS on iPhone 12 Pro Max (FF7523FB-FD48-40DF-9429-0C24F7EF6A64, iOS 14.4, Booted), NSLocalizedDescription=Failed to launch IBAgent-iOS via CoreSimulator spawn, NSUnderlyingError=0x7fe3dc535660 {Error Domain=com.apple.CoreSimulator.SimError Code=405 "Invalid device state" UserInfo={NSLocalizedDescription=Invalid device state}}}}, NSLocalizedRecoverySuggestion=Please check Console.app for crash reports for "IBAgent-iOS" for further information., NSLocalizedDescription=Encountered an error communicating with IBAgent-iOS.}

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谢谢你的回答：）

嘿，叶卡捷琳娜，欢迎来到Stackoverflow

您需要重新安装：

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备份项目并从应用程序文件夹中删除XCode 还有倒垃圾

然后导航到/Library并查看开发人员文件夹。删除CoreSimulator、XCode、XCTestDevices文件夹。再次清空垃圾

导航到/Library/Cahes并查找文件夹com.apple.dt.XCode 并删除整个文件夹。最后一次倒垃圾

然后重新启动Mac/Macbook，转到AppStore下载并下载 重新安装XCode

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那就没事了