(1) Phenomenon: In general, the storage of data in a sandbox as a unit, preference data exists in the sandbox path library/preferences inside, but Xcode6 find to find there is nothing at all.
(2) Reason: Xcode6 and Xcode5 and before, there is an adjustment on the emulator folder path.
(3) Xcode6 's preference file is unified in a folder called Preferences, which has a lot of plist files in preference settings.
The path to this file is/users/your user name/library/developer/coresimulator/devices/simulator udid/data/library/preferences
(4) Extension: In fact, we also mentioned above, in Xcode6, including the path of the sandbox is different from before, fortunately we can find the path through Nshomedirectory ().
Detailed analysis See: http://blog.csdn.net/tmweipan/article/details/39761939
"iOS Dev-74" solution: Save data under Xcode6 with preference, where is the final plist file?