相关疑难解决方法(0)

尝试:

xcrun simctl 

在terminal收益率:

xcrun:错误:无法找到实用程序"simctl",无法找到开发人员工具或PATH

我有Xcode 6.2 Beta.

有什么建议？

我运行我的应用程序时,我在标题中收到错误.我正在运行Xcode Beta 10 Version 6.完整的错误是:

[NetworkInfo]描述符查询返回错误:错误Domain = NSCocoaErrorDomain Code = 4099"与名为com.apple.commcenter.coretelephony.xpc的服务的连接无效."UserInfo = {NSDebugDescription =与名为com.apple.commcenter的服务的连接. coretelephony.xpc无效.}

它会在我的createTaskFromSnapshot()函数中抛出,在函数的第一行.

我的代码:

func observeDatabase(_ tableToUpdate: UITableView) {
    taskDatabase.observe(.childAdded) { (snapshot) in
        self.handleChildAdded(snapshot: snapshot)
        tableToUpdate.reloadData()
    }
}

private func handleChildAdded(snapshot: 
    let addedTask = createTaskFromSnapshot(snapshot)
    taskList.append(addedTask)
}

private func createTaskFromSnapshot(_ snapshot: DataSnapshot) -> Task {
    let snapshotValue = snapshot.value as! Dictionary<String, String> // error is thrown here

    let taskTitle = snapshotValue["taskTitle"]!
    let newTask = Task(title: taskTitle)
  return newTask
}

这个错误是什么意思？为什么我得到它？

在模拟器上启动应用程序时，我经常使用 Xcode 11.3.1 遇到这个问题，有时只需重新启动 Xcode 即可工作，有时我必须重新启动计算机才能使应用程序再次运行。它从未发生在 Xcode 11.1 上。

我已在 Mojave 上升级到Xcode 11.1，现在来自 FacebookSDK的奖励广告示例项目抱怨 com.apple.commcenter.coretelephony.xpc 无法正常工作。

播客文件

# Uncomment the next line to define a global platform for your project
platform :ios, '11.0'

target 'testapps' do
  # Comment the next line if you don't want to use dynamic frameworks
  use_frameworks!

  # Pods for testapps

  pod 'FacebookCore'
  pod 'FacebookLogin'
  pod 'FacebookShare'
  pod 'FBSDKPlacesKit'
  pod 'FBAudienceNetwork'

end

用法

# Uncomment the next line to define a global platform for your project
platform :ios, '11.0'

target 'testapps' do …

任何人都可以向我解释这个错误是什么以及我如何修复它。我使用的是 Xcode 12.4，每次我在调试区运行我的应用程序时，总是会出现这个错误。任何帮助都感激不尽！！！

2021-02-14 12:42:28.811980+1100 Line Up[18396:480644] [Client] Synchronous remote object proxy returned error: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
2021-02-14 12:42:28.812210+1100 Line Up[18396:480634] [Client] Updating selectors after delegate addition failed with: Error Domain=NSCocoaErrorDomain Code=4099 "The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated." UserInfo={NSDebugDescription=The connection to service on pid 0 named com.apple.commcenter.coretelephony.xpc was invalidated.}
2021-02-14 12:42:28.814961+1100 Line Up[18396:480644] …