Sound not working in iPhone Simulator?

Somehow my iPhone Simulator is unable to play sounds. First an app I'm working on using AudioServicesPlaySystemSound() stopped working.. I spent a while debugging this but sound is still working on the iPhone when I run the app on the device. I get the same results with other iPhone apps such as the sample Crash Landing app.

I can't find a sound setting anywhere in the simulator or Xcode preferences. I've tried resetting the simulator through "Reset Content and Settings" menu item to no avail.

Solution 1:

On your Mac, go to System Preferences > Sound > Sound Effects and then uncheck and recheck "Play user interface sound effects".

You need to re-activate your system sounds, see the end of this page.

Solution 2:

I had no sound in the simulator, so I tested it with mobile safari and tried playing an mp3: No sound!

All the above tips didn't help. Eventually, I changed my INPUT source from the virtual soundflower device to Line-In, and the Simulator worked!

So, even if the app wasn't using input, it didn't work well with Soundflower.