swift - Set desktop background image for all Spaces (possibly using com.apple.desktop) -

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i want change desktop background image of user's spaces @ same time. after research found a solution relies on accessing .plist file named "com.apple.desktop". when try access file using line of code, value nil:

let desktopdict = nsuserdefaults.standarduserdefaults().persistentdomainforname("com.apple.desktop")

yet, if try same thing string ie: "com.apple.dock" dictionary expected. know syntax right, seems way access com.apple.desktop plist has changed in past couple years.

can still use com.apple.desktop change wallpaper spaces @ once? or there other way should doing this? thanks.


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