更新到 Xcode 7.3 后，我无法在 iOS 模拟器中运行我的应用程序。
每次尝试我都会收到以下错误消息:
DTAssetProviderService could not start DTXConnection with Simulator 'iPhone …'. Check the system log for errors.
我检查了以下 Apple developer forums thread但没有提供任何解决方案。突然间，当我从模拟器中清理并删除旧应用程序并重建时，它工作正常。这个问题不仅是第一次。
谁能详细解释一下这个问题？
Mar 24 10:18:38 CoreSimulatorService[521] : com.apple.CoreSimulator.CoreSimulatorService 209.19 starting.
Mar 24 10:18:44 CoreSimulatorService[521] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:44 CoreSimulatorService[521] : Requested phone is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:44 CoreSimulatorService[521] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:44 CoreSimulatorService[521] : Requested phone is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:45 com.apple.dt.Xcode[455] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:45 com.apple.dt.Xcode[455] : Requested phone is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:45 com.apple.dt.Xcode[455] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 10:18:45 com.apple.dt.Xcode[455] : Requested phone is is not available for pairing. Assuming it has the capability.
Mar 24 11:02:29 com.apple.iphonesimulator[712] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 11:02:29 com.apple.iphonesimulator[712] : Requested phone is is not available for pairing. Assuming it has the capability.
Mar 24 11:02:29 com.apple.iphonesimulator[712] : Requested watch is is not available for pairing. Assuming it has the capability.
Mar 24 11:02:29 com.apple.iphonesimulator[712] : Requested phone is is not available for pairing. Assuming it has the capability. Mar 24 11:02:31 CoreSimulatorService[521] : Could not register service com.apple.coreservices.lsuseractivity.simulatorsupport: Failed to lookup com.apple.coreservices.lsuseractivity.simulatorsupport: 0x44e
我对这个问题的猜测:我不确定，但我的猜测是当我更新 Xcode 时，iOS 版本更新到 9.3，但在安装旧版本 (9.2) 时，该应用程序已经安装在 iPhone 6 Plus 模拟器中。因此，当我尝试使用 iOS 9.3 运行该应用程序时，我只配置了 iOS 9.2，由于不兼容，它崩溃了。
最佳答案
杀死模拟器并从 Xcode 重新启动它对我有帮助。
您可能正在使用破坏 Xcode 7.3.1(mac 商店版本)的 macOS Sierra
使用从 Mac 开发人员门户下载的 Xcode 8 beta 或 Xcode 7.3.1.dmg 进行修复 https://developer.apple.com/downloads
Xcode 7.3.1 的直接链接:http://adcdownload.apple.com/Developer_Tools/Xcode_7.3.1/Xcode_7.3.1.dmg
关于ios - DTAssetProviderService 无法使用模拟器启动 DTXConnection，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/36200318/