Xcode 安装问题集

问题1:

***Showing All Messages/xx...xx/xxx.xib:-1: Failed to findorcreate execution contextfordescription'<IBCocoaTouchPlatformToolDescription: 0x7ffd0862ac80> System content for IBCocoaTouchFramework-EightAndLater <IBScaleFactorDeviceTypeDescription: 0x7ffd081c6b40> scaleFactor=2x'. These intermediate objects were non-nil: ......***

解决：sudo killall -9 com.apple.CoreSimulator.CoreSimulatorService

参考：[https://stackoverflow.com/questions/36533720/failed-to-find-or-create-execution-context-for-description-ibcocoatouchplatform](https://stackoverflow.com/questions/36533720/failed-to-find-or-create-execution-context-for-description-ibcocoatouchplatform)