错误跑操场。无法找到合适的目标设备。(iOS斯威夫特)

I created a new project in XCode.

我在XCode中创建了一个新项目。

File > New > Playground (option+shift+cmd+N)

文件>新的>游乐场(选项+shift+cmd+N)

I restarted my XCode and also rebooted my system, but still same error.

我重新启动了XCode，也重新启动了系统，但是仍然有相同的错误。

4 个解决方案

#1

Try navigating to the Xcode Menu Window >> devices (shift+cmd+2) a new window will pop up.

尝试导航到Xcode菜单窗口>>设备(shift+cmd+2)将弹出一个新窗口。

On the bottom left, add a new simulator, specifically one running on iOS 8.0 to the existing list.

在左下角，添加一个新的模拟器，特别是一个在iOS 8.0上运行的模拟器。

Restart Xcode.

重启Xcode。

#2

From the developer forums, this worked for me:

在开发人员论坛上，这对我很有效:

1. Quit Xcode
2. Xcode辞职
3. Delete the folder /Users/<username>/Library/Developer/CoreSimulator/Devices. For example, in Terminal: rm -rf ~/Library/Developer/CoreSimulator/Devices
4. 删除文件夹/用户/ <用户名> /图书馆/开发/ CoreSimulator /设备。例如，在终端:rm -rf ~/Library/Developer/CoreSimulator/Devices
5. In Terminal: killall -9 com.apple.CoreSimulator.CoreSimulatorService (or just reboot).
6. 终端:killall -9 com.apple.CoreSimulator。CoreSimulatorService(或重新启动)。

#3

Fox Xcode 7, I had to install iPad Air or iPad Air 2 for the playground to work.

Fox Xcode 7，我必须安装iPad Air或iPad Air 2才能在操场上工作。

#4

As referred by @Mayank Gupta , It worked on adding new simulator and restarting the XCode.

如@Mayank Gupta所言，它致力于添加新的模拟器并重新启动XCode。