Xcode offline installation help documentation

1. view the Help file online:
View the Help File in xcode. The help-developer documentation menu can be searched in the search box in the upper right corner, but it is very slow and can be viewed online.

2. Download The Help file to your local device:
To download the Help file, right-click xcode-preferences-documentation and choose get info from the menu. You can view the feed URL and find the. Atom file address. You can view the download list in the FF browser and download it with thunder.

The atom link is as follows. Copy it to the address bar of the browser and you will see the download list (it may not work with IE)

Http://developer.apple.com/rss/com.apple.adc.documentation.AppleiPhone4_3.atom

The link address is as follows:

Http://devimages.apple.com/docsets/20110309/com.apple.adc.documentation.AppleiOS4_3.iOSLibrary.xar

3. After the download, copy it to the/developer/documentations/docset directory of Mac,
Use Terminal commands:
Sudo xar-XF file name. xar
Decompress the package and fix the permissions:
Sudo chown-r-p devdocs file name .doc set
Open xcode and you will be able to browse it offline.