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

在我的spritekit项目中插入touchesMoved-function后,这种情况开始发生。这个函数使用强制展开,这似乎导致了问题:

override func touchesMoved(touches: NSSet!, withEvent event: UIEvent!)

在删除感叹号并停止强制打开后,SourceKitService停止了崩溃。

希望这能有所帮助!

其他回答

为了解决这个问题,你的Swift代码可能会有一些奇怪的问题。例如,因为您正在复制和粘贴,所以有多个iboutlet的定义。通常这只是一个无法处理的语法错误。

我发现,通过显式地(静态地)键入变量类型,而不是推断它们,为我解决了这个问题。

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。

今天有同样的问题,事情是与println,我只是尝试了旧的NSLog风格打印一个值:

// something like this
println("value = %@", valueObj)

我们应该如何在swift中组成字符串的方式已经从printf风格演变为内联风格,所以现在你可以像这样将你的值嵌入到格式字符串中:

"Here goes \(YOUR_VARIABLE)"

所以,对于上面的例子,解决方案是:

println("value =\(valueObj)")

将扩展移动到主体类之前。

extension SomeType {
// new functionality to add 

}