Multiple notifications via NotificationCenter

[michaeldorner]

I receive several notifications, although I expect only one singular notification - to be more precise: lastNumberOfOccurences = lastNumberOfOccurences +1.

I thought one of the following resources solved my problem:

• http://benscheirman.com/2012/01/careful-with-block-based-notification-handlers/
• http://sealedabstract.com/code/nsnotificationcenter-with-blocks-considered-harmful/

But none of these solved the problem. I also tried to use the non-block-based solution via selectors, but this also failed.

Any ideas why so? How to handle that properly?