Xcode 9.2官方直接下载地址(离线下载)
https://download.developer.apple.com/Developer_Tools/Xcode_9.2/Xcode_9.2.xip
其他版本
Xcode 8.3.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.3.1/Xcode_8.3.1.xip
Xcode 8.2.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.2.1/Xcode_8.2.1.xip
Xcode 8.2
http://adcdownload.apple.com/Developer_Tools/Xcode_8.2/Xcode_8.2.xip
Xcode 8.1
http://adcdownload.apple.com/Developer_Tools/Xcode_8.1/Xcode_8.1.xip
Xcode 8.0
http://adcdownload.apple.com/Developer_Tools/Xcode_8/Xcode_8.xip
