Preventing Xcode 4 on Lion reopening windows

Xcode 4 on Mac OS X Lion reopens all the projects from the last session. This is pretty frustrating to me most of the time as I switch from working on a client app or two plus a couple of my own. I’d rather be able to quit and reopen a fresh session to work on what I want at that moment, not have to sift through four or five spaces with different Xcode projects to find the one I want… every time I switch to and from another app.

There used to be a way of preventing this in Xcode’s preference plist, but this no longer works. Instead, a solution is to set the following folder as locked, so Xcode can’t write to it to save the state.

~/Library/Saved\ Application\ State/com.apple.dt.Xcode.savedState

You’ll want to delete the contents of this, then get info and click the locked checkbox. Et voila, no more projects reopening themselves.

Thanks again to Pete for letting me know about this. He should really be blogging these little facts!