Disable App Nap in MacOS 10.9 (Mavericks) application

Question

I am writing an application that receives OSC messages. However, due to 10.9\'s App-Nap-technology the application stops reacting on these messages after leaving foreground.

Answer 1

the activity need to be stored in a property. So I added this in the header-file:

@property (strong) id activity;

and then used this implementation.

if ([[NSProcessInfo processInfo] respondsToSelector:@selector(beginActivityWithOptions:reason:)]) {
    self.activity = [[NSProcessInfo processInfo] beginActivityWithOptions:0x00FFFFFF reason:@"receiving OSC messages"];
}

Thanks to all contributors!