No more quick help in Xcode editor

Question

Quick help has gone away in my Xcode 5 (5.0.2 on OS X 10.8.5):

Instead of the little popup window that's supposed to pop up for the Opt - Click shortcut all that ever shows is the arrow image:

Been like this since the Xcode 5 upgrade. Any ideas how to fix it..?

FWIW: The doc sets are in fact properly installed - 'Opt' + Double-Click brings up the correct documentation as usual. Even removing the doc sets manually and re-downloadig didn't help.

The hovering Quick Help window is still gone..

Answer 1

Close Xcode then delete ~/Library/Caches/com.apple.dt.Xcode.

Reopen Xcode and option click on whatever you were interested in.

It seems to take a bit of time to be available after deleting the above directory. I option clicked a couple of things and after the third click it started working. Be patient!

Working for me on Xcode 8.2.1

Answer 2

I just had this issue yesterday. It happened after I disconnected my iPhone from my computer, the target device switched to "Generic iOS Devices". All of a sudden, quick help stopped working, the symbols lost their icons in the auto-completion pop-up.

I just tried select any of the simulator device to get it working again. Or you can just reconnect your iOS device.