iOS sandbox path

The primary path of the sandbox

• Documents
  
  • Need to save files or data generated by the application itself , for example: game progress, drawing of graffiti software
  • Files in the directory are automatically saved in ICloud
  • Note: Do not save files downloaded from the network, otherwise you will not be able to shelves!
• Caches
  
  • Save temporary files for later use , for example: Cached pictures, offline data (map data)
  • The system does not clean up files in the cache directory
  • a cleanup solution for the cache directory must be provided when program development is required
• Tmp
  
  • Save temporary files that you do not need to use later
  • Files in the TMP directory, the system will automatically clean up
  • Restart your phone and the TMP directory will be emptied
  • System also cleans up automatically when the system is running out of disk space
• Preferences
  
  • User preferences, use NSUserDefault Direct Read and write!
  • Before iOS8, if you want data to be written to disk in a timely manner, you also need to call a synchronous methodsynchronize

iOS sandbox path