我在Xcode中遇到了一个问题,错误“源套件服务终止”正在弹出,所有语法高亮显示和代码完成都在Swift中消失了。我该如何解决这个问题?

下面是一个示例图像:


当前回答

你只需要删除“ModuleCache”,这是Xcode用于自动补全的某种缓存。

在终端中复制并粘贴以下代码行:

/Library/Developer/Xcode/DerivedData/ModuleCache . rm -rf ~/Library/Developer/Xcode/DerivedData/ModuleCache . rm

其他回答

到目前为止,对我来说最常见的两个原因是:

行末的分号 导入文件中未引用的框架

我相信我找到了一个更通用的解决方案。下面是我用来鼓励Xcode不要产生SourceKitService Terminated错误的步骤。


我的症状是:

When I would start up a new playground, I would receive an error about not being able to communicate with the playground (Error running playground: Failed prepare for communication with playground. See this image on twitter. When I would switch the playground from OS X to iOS, I would receive another error (unfortunately I did not write that one down). When I would start to type in an iOS based Swift project, attempting to use code completion/intellisense on any UIKit specific class, I would receive the SourceKitService Terminated issue in this thread.


调试过程:

我开始通过谷歌寻找SourceKitService,这得到了很少。 然后我开始监视控制台。应用程序,同时使用Xcode。这显示了几个错误: IDEPlaygroundDocument:运行游乐场时遇到错误 com.apple.CoreSimulator。CoreSimulatorService[3952]: The runtime for The selected device is not installed。


我做了什么来纠正这个问题。

如果您只是在Swift项目上下文中遇到问题,请先单独尝试一下。如果这不起作用,那么尝试下面的所有步骤。

打开项目并将目标的部署目标更改为<= 7.1。

更漫长和复杂的过程。 (前3步不一定有帮助,但我做到了,所以把它们记录在这里)

Completely delete all copies of Xcode on your system. Restart your computer. Reinstall Xcode6-beta only. Verify that you still have the issue in playground and/or projects. Open iOS Simulator. Hardware -> Device -> Manage Devices Remove all devices. Recreate all devices you want. I appended the iOS version to the end of the name, just because. Restart Xcode and the simulator. Verify that at least playgrounds no longer throw issues when switched from OS X to iOS. Open your project and change the target's deployment target to something <= 7.1.


分析

看来问题是Xcode6不能正确地找到并连接到模拟器。我不知道为什么会出现这种情况,但这让我可以继续使用Swift进行开发。这可能与模拟器二进制文件似乎移动的事实有关。

在项目中使用Swift以外的其他名称。“Swift”是保留的。

对我来说(xcode 6.1),原因是我忘记采用我的子类协议。

例如,这是错误的:

protocol SomeProtocol { ... }
class A :NSObject, SomeProtocol {
...
}
class B : A {
...
}

这是可以的:

protocol SomeProtocol { ... }
class A : NSObject, SomeProtocol {
...
}
class B : A, SomeProtocol {
...
}

将部署目标更改为iOS 8.0对我来说很有效。我知道有人说将它移动到<=7.1可以工作,但这个问题似乎来自多个来源,所以这个替代方案可能可以工作。