iOS/tvOS 游乐场因“无法找到所选运行目标的执行服务”而失败

Question

迁移到 XCode 7.1 后，我无法在 iOS 和 tvOS 平台上使用 Playground。只有 OS X 有效。最简单的游乐场代码会产生错误消息：

找不到所选运行目标的执行服务

我怀疑这与 XCode 没有找到合适的模拟器有关，但是我不知道在哪里以及如何配置它。

我在现有项目中尝试了 Playground，以及刚刚从启动屏幕中新创建的一个。

有什么想法可能是错的吗？

更新：

检查控制台提供了更多信息，但仍不清楚如何修复：

24/10/2015 10:16:10,193 lsd[279]: LaunchServices: Could not store lsd-identifiers file at /private/var/db/lsd/com.apple.lsdschemes.plist
24/10/2015 10:16:10,212 com.apple.usbmuxd[82]: LOCKDOWN_V2_BONJOUR_SERVICE_NAME is _apple-mobdev2._tcp,8de107c0
24/10/2015 10:16:10,248 Xcode[819]:  DeveloperPortal: Using pre-existing current store at URL (file:///Users/courteouselk/Library/Developer/Xcode/DeveloperPortal%207.1.db).
24/10/2015 10:16:10,381 com.apple.CoreSimulator.CoreSimulatorService[461]: Requested phone is is not available for pairing.  Assuming it has the capability.
24/10/2015 10:16:10,384 com.apple.CoreSimulator.CoreSimulatorService[461]: Requested phone is is not available for pairing.  Assuming it has the capability.
24/10/2015 10:16:12,929 com.apple.usbmuxd[82]: _SendAttachNotification Device 80:ea:96:04:a5:da@fe80::82ea:96ff:fe04:a5da._apple-mobdev2._tcp.local. has already appeared on interface 4. Suppressing duplicate attach notification.
24/10/2015 10:16:13,311 GPUToolsAgent[832]: Mac Agent inited !!!
24/10/2015 10:16:14,287 Xcode[819]: <DYMobileDevice: 0x7ffbfd6b6320>: failed to acquire service transport reservation: Error Domain=DYAMDErrorDomain Code=-402653150 "(null)"
24/10/2015 10:16:14,447 Xcode[819]: [MT] IDEPlaygroundEditor: Error encountered attempting to run playground: Error Domain=IDEPlaygroundErrorDomain Code=1 "Unable to find execution service for selected run destination." UserInfo={NSLocalizedDescription=Unable to find execution service for selected run destination.}
24/10/2015 10:16:19,672 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,672 mdworker[255]: LaunchServices: Database mapping failed with result -10822, retrying
24/10/2015 10:16:19,672 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,673 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,673 mdworker[255]: LaunchServices: Database mapping failed with result -10822, retrying
24/10/2015 10:16:19,673 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,674 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,674 mdworker[255]: LaunchServices: Database mapping failed with result -10822, retrying
24/10/2015 10:16:19,674 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,674 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:19,674 mdworker[255]: LaunchServices: Database mapping failed with result -10822, retrying
24/10/2015 10:16:19,675 mdworker[255]: LaunchServices: received XPC_ERROR_CONNECTION_INTERRUPTED trying to map database
24/10/2015 10:16:20,497 Xcode[819]: CompanionProxy: _SocketReadCallback:128 (0x0x700000117000): Failed to receive response from AMDevice 0x7ffbfe60cad0 {UDID = e4bfce5e11be0bcf730ada45b4d6ae81f1abdb01, device ID = 23, FullServiceName = 80:ea:96:04:a5:da@fe80::82ea:96ff:fe04:a5da._apple-mobdev2._tcp.local.}: 0xe8000084
24/10/2015 10:16:20,497 Xcode[819]: CompanionProxy: _SocketReadCallback:200 (0x0x700000117000): Stopped listening for paired devices from AMDevice 0x7ffbfe60cad0 {UDID = e4bfce5e11be0bcf730ada45b4d6ae81f1abdb01, device ID = 23, FullServiceName = 80:ea:96:04:a5:da@fe80::82ea:96ff:fe04:a5da._apple-mobdev2._tcp.local.}: 0xe8000084

Answer 1

可能有更快的解决方案：

在 Xcode 中检查您的设备中是否有 iPad Pro 模拟器。如果没有 - 通过添加模拟器选项添加它。

正如一些人在 cmets 中指出的那样，您可能还需要重新启动 Xcode 或重新打开 Playground。

要添加模拟器，请转到设备（窗口 > 设备）。点击窗口最左下方的 + 按钮，点击“添加模拟器”，然后从下拉列表中选择适当的“设备类型”并点击“创建”。

Answer 2

好的，经过一番努力，这就是解决方案。

1. 清理文件夹~/Library/Developer/CoreSimulator
2. 重启机器
3. 尝试运行 iOS Playground，它现在应该可以正常运行了。

注意：在我的例子中，我将CoreSimulator 重命名为CoreSimulator.old，并在重新启动后自动创建了一个新的CoreSimulator（所以，我只是扔掉了.old） .

顺便说一句，/Root/DefaultDevices 下有一个文件 ~/Library/Developer/CoreSimulator/Devices/device_set.plist，其中包含模拟器的完整列表。我认为这就是问题所在。

Answer 3

我能够在终端中使用这两个命令解决此问题：

$ rm -rf ~/Library/Developer/CoreSimulator/Devices
$ killall -9 com.apple.CoreSimulator.CoreSimulatorService

Answer 4

删除 DerivedData 文件夹 ~/Library/Developer/Xcode/DerivedData 中的所有内容，然后重新启动 Xcode

Answer 5

在xcode--> window-->devices中添加所有模拟器。

重启xcode就可以了

Answer 6

Xcode 8 更新。遇到类似的消息

“所选平台不可用”

在 Playground 打开的情况下，在窗口的右上角，右侧的最后一个图标：隐藏或显示实用程序。单击它，然后在该区域中单击左侧的图标：显示文件检查器。

然后在 Playground Settings 弹出窗口中，它可能被设置为未知。将其更改为您选择的平台（对我来说是 OS X），那么您应该一切顺利。