Xcode 4 Sort Files By Name
Solution 1:
This is a missing feature (a major one, IMO) from Xcode 4.
EDIT: As of 4.2 it's back in!!!
Solution 2:
It IS there in Xcode 4.2 (not sure about earlier versions though.)
y http://f.cl.ly/items/1m0r0y190y0D2w2t3t1D/Screen%20Shot%202555-01-04%20at%2012.16.31%20.png